mro mm vronoorr or fin ivmnc* - USGSlooch *ad St. Aiif***** (fig. 1). Tho croatott thiofcacte found...
Transcript of mro mm vronoorr or fin ivmnc* - USGSlooch *ad St. Aiif***** (fig. 1). Tho croatott thiofcacte found...
mro mm vronoorr or fin ivmnc*
nun unm woman us ci x«
UT f CKS
DiflflQl XX - ULDICACTinTT (9 ItUflAMf JJTD cmQl XUII 11
4. L
1946
TrmM «X«wt« IaTt«tl«ktloa« - Mpcrt K. 17
I
rt
JAN JO 9- 7-3
ConfldeT3tlal
OF SO*
ftapart
A. L.
April 8ft. 1046
Introductory
Loo«tioQ Mid «xt«at cf dvpumitt > . - 3.
fh« an^hr«/t Gold Corporation * 2
- -~ - « - - . - 5
lomoh ooaoMitrntio M of faj^rj l»»rmls ft
flC* 1 In4ax aip of part of Florida, followia* pa«a- * * ft
ConfidentialIntroductory
Saaples from two eoap*nl«s »iniag Florida beach sands wero obtained by
Robert A. Laurence of the Geological Survey in the svMOr of 1944 as pnrt of
the nill-pro&iote investigation. These samples were tested for radioactivity
mad a further investi^ntion of the r&dioaotivity of the sands was «ada "by
A. L. Slaughter and S. S. Clabaagi* in Ap.il, 1945.
"lllBonlWwa* first produced fr«i Florida teach aaade in 1916 at Mineral
Clt/t about 4 Biles south of Jacksonville Bench. At the present time, rutile
aad sircon are also Wiac ooa»erci*lly extraotad fresi the saads.
Qoly a few cb««ical aaalyses for uranium are available. Determinations
of Th02 are by spectrefraphie anal/sis.
Ta* deposits of heavy aiasrait on the "b^aehas of Florida eaaaot now be
oonsidervd an ia^ortant source of uraniua and thoriun. The operation of the
BBparera §old Corporation is by far the largest of its type In the stata.
they produce only 250 tons per day or about 90,000 tons per year of ha^vy min
eral ccncantrnte containing about 0,010 percent equivalent umnitei aad about
0.02 percent ThOg.
Location aad extent of depesits
The deposits at Mineral City have been described by tfort*ns~' as strips
-' Martens. Jaaws I, C. v leaah deposits of ilaenito . rutile, and sircon in floridai fla. Oeol*. aorvey, 19th Annaul Kept., pp. 134-154, 1938
occurring on the baok part of the beach at the foot of th« dunes and extend
ing out a short distanoo in front of them. He says that durlag the early
period of working, the richest streak at the foot of the dunes contained 60
percent of heavy Minerals for a thickness of I to 8^ foot and a width of 26
to 26 foot. Later, however, the average of the sand as worked was around 20
Confidential
p+ro«at hftflvy ainaralt a*d tba 4i»*aaloiia iowmoat email «r. At Iba UB* af
Martana' writ!i* tft* working hud aitaadtd far a diataa** of U «il*a *1«M
tha baaob.
Toimaav-' aajra tfcat taa bicboat panamt of kmo-wa oao«otr«tloa ef ilmnlU,
-' Tftnun, n. o. n»rld« viatral iad»«%JTJ Flu, C*ol. Smrrw/, Ball. 94* pp. 138-14C, 19 4. v.
rutil«, and ilro^a o^eum alone th* * % oomt %«%««4m /*«kMn^ill« Md Ml-
Warm*, tat ih%t aAoih«f- p»«9ibl« ** * of O9m«nii«l dffT«lo«*«t ! la «*§t-
rn n^rlda aloag tn« ca*«l and
Intaraat ia mow foouead a a tba loaar grtoa ttnaa aaa tarraaa aaada. Tba
aot ooAcamtratad to aoob a blfb 4acr«4» a» on tba ba^ohaa*
diatributad orar Urvar i»raj\a. Ba dat>«tlta oa tba
aaahaa ara balac aiaad at
IlaaniU. rutil« , «ad ilrcom a*T« l»aa of prinaipal iataratt aar*Ufor«.
Maaatlta, ba«au«a of Iti hl«h r»di«ia%ivit/t Mw baco^i iajportaAt altkavch it
it ona a/ tba laaat aKtadaftt ooaatituanta. A wi^tt^ti*! rt of th« r*Uo*-
la aaatribv>tad o/ tiro on. Coapoiitioas T&T/ craatljr from plaan to
, but OA th« avaraca. lljaanlta 1» tha »a»t aVoodant iMiaty ln«r%l , ilrcoai
ooad aad nttla third. Maaaslta ia tba fourth a«at ftbaadaat h*av/ alu«ml i
oaja plaoat, but la ota«ra la laaa ataadaat tama atanrollU. apldata* and
At Vaaic«, oa tba tulf oo<tat aouth of Urmaotn, ^hoapb^ta aa oolltpliaaa it tbas_ , »*- -~ -f ... .*
fl at abiiadaAt oouatltuUat of tba d*rk
lia* caA
fao Jiayajajro <>«&* Corpora tloa it tao tuoootaor to tho Batllo Hlaimc Coa-
of nor Ida. fkio ooapoajr it alula* torraoo o*ada fro* * d»poiii 4 allot
of Jvikaoavill*. fla. (ft*. I), HOAT/ oia«jr«l» aro oiaooBtrmtod %y AO^AS of
n»»l/-cut*olopo4 aaaphrv* opiral eoaeoAtrmlor (wot Mill), foparatica of
ilawaito aa<i rutilo, tho oml/ ^n^rali l?«lac BTodu^od eoomerclaU/ at tho proooot
tiao. it aado b/ oloetronUtlo and aacaotlo loporatnrt (diy alll}.
tko ooayaryy aiaot 6000 toa» of a«ad par / wtoich cont^int aa avora^o of
6 poreont h*»v/ alaoralt. Hot av«mc« eoBpotltloa of tao ho" vy aiaoral coa-
i» aa follows:
llaaait*
zircon
natilo ft*
ocaslto 1-2JC
porcont It ooapotod of ataarollto, opidoto, caraot, kyaaito
amd oth*r ain«r«l». Cloaa tlrcoa ceasoatrtto eaa bo prodaood aad otaasoa aro
plaaaed In th« dp/ mill vaioa mill onaUo tho «*a*iar to pro4aM tlrcoc ooomor-
lall/. Jr/ sill tiiliac* vhieh ccatiia tao provioualjr alaod airooa aavo oooa
oaTod aad the tlrcoa will bo roeovorod. Hr, D. 0. Brooa, coaoral aoaafor, aa/a
taat aoaaiito o*a alto to oaaornttd ia th* drj alll. Pvatiblo aarkoto for
atito aro oolai iavoot&^ttod.
Potollod lAforattloa ooaoornlac aoaploa is «ivo& la UMI folloviaf
taaplot 711. 2. 3. aa£ 4 waro eollooto4 */ LoaraoM; all otaor5woro eolloetod
tgr SUmchUr aad Claaia^a. Tbo la tor ta«pl«» oaao froa aa oatir«l> difforoat part
uraaluaof tbo ur.i^uon. of nUtleaoUTlt* o*pr«t*od aa
AT« ty UtoorAtorr **B»A count i
«r*AiuA Atttr^AAtloA, t*t it
LUt of WM»1*«,
S*A?!A STfll ti too AA*!! fo#
told Oorp.
Bo. AAAiT. U 0 obAm. fM)g prodttct
O.OM 0.01X) 0.01
0.001
^H3 0.001
m 0.049
sm o.ooo
0.010 O.OS
6000
4760
HO
T
290
*»t Kill . »o«u/ q«*
«»t alll c«M«&tr*U«. Iwnl f««d to drj Bill.
tod atA*t UlliAct fro* *«t Alll,
tot Hill ooi0«Atr*t««, kAnyjr Alaorml f««d to drj Alll* »AA«AB "
STB?
ST-8
o.o&i0.^8
O.'JOO
106
JO
JO
at
nrr
MlUl« «
Zlroom fro* pilot
* m
It ! app*rat th%t UMI r»dioicUT« »%t«rl*l 1» oonctatmUd with th«
ftU*r*lt MA ttet It ! furU*r eoaeMitr%t«d la that p«rt of tte h«aTy Utr«l
cono«ntr>U 4iiah 4»M not «o«UlB tiM llvnlt* nAd rwtil*. lout vUleh *
ta« flr«AAftftl AtAABtU. UA th« bn«l» of t«« eA«pl«», tirwilUA Is r@t?cAtlAl« far
ml/ 16 U 3B AAt«AAt of tAA lotAl Activity.
flM ******»+ IA till* CABAAlt AM AOt kmOflA. V«t th« c4^»AA/ »1«A« AOIltlA-
p«r»tl«A«A4 At % rrnto of 1000 toAft p*r digr t OM /^r'» op«rmUoA would
of AAAT!/ 2,000.000
Kit Idaoral Co***? rta»a Ma4 frA.n d« oait *t UM aouthora o4*o
of tho ait/ of Tor* Booch, fit. (flf. 1) a*o«t 09 all* fro« iJrtioJl ttvor. Mr.
. f. Pricfor* it eo-ovtitr tad mm*c*r Aftl ia o*i of ito pl<»a»«rt of iho iohutry
ia Florid*. Th« coaoa^ oo«co»trt.t<,r it loe^t*4 «t k^lbaermo, a^nr DM ait* of
fora»r aiaiac co«r«ticna. Tho nio of kiAlax la 1"0 toaa por Aa/. T*+ pit ia
11 foot <Uo^; Iho da*c«Rtrmtloik of hoo.vj al»«r*ile &» aot octoai WIow iho nniural
alor lorol «^oro a ooarao «iili« ana4 ia oao^uAtorod. fh* t^nd %« alaod Avora^oa
B}£ tenTjr atfjior%la. ll«oa\ito. rutilo. aad tlrcaa axo Mi04 prodtteod, Baramti of
Ittaoa prodauUc.n fl««roa far Daoamtmr, 1944 iaAioato a r*tio of rutila to il«tm-
iU of -tout I to 7.
Iho folle»iaf aoBploa voro t%koa fejr
loat uTfcoiua aro a/ laoomtory CaJaaa couatta*.
Bo.foreoat Poreont
. V 0 ehoav
Liat of aoo^loa. Us Hn«r*l
^reottTb02
Toaa/4a/ cf proiaot
m
MU
MW
wuH',7
KiteK»
0.001
0.010
0,'>1
0. K*
0.004
0.030 0.013 0.01
0.09 0.009 0.01
1?G
1
163
1
V
1
t
fioaorl^tioa
* Mao4.
Banvjr miaoral ao
Tailino-a. aottljr
IlMtnito ooacontmUa
iiroom coaooatrtto.
Dry aiU tailiaca.
ft.
Boaploi wort tafean at ft pltooa aloaf th« tatoh botnooi* Jaekaoarillo
looch *ad St. Aiif****** (fig. 1). Tho croatott thiofcacte found OBO 2$ foot
(a*xBplo ff32). TTilo ooAplo, t"Jr*n Jiitt la fro at of tho liao of dua*§, ooa*
tolno 0.00ft poro«at o^uiT»loat wmaluB^y flold oount, Tao aott hichljr radi
ootlTO oaaplo io fro a o 0.36 foot lay or of blooJr toad *a& ooatalao 0.050 por
oat oquivalont urnaiUB. Tao thicinoit. do«roo of ooaaafttratioa, «ad width
of tho lopooito aro vory irrocular. Tbi 4opooit» *ro aot continuous ia«
aorth-iouth dlroctloa oloac tho boi^eh bat thii it tho dlrsotloaof tboir
mlaonoioa.
FiTO ooaploi ooro t«k«« fro a a ij ailo otrotoh of tooaa at Toaiao. o&
tho ftulf oooot (fig. 1). ftoro* taoll oonooatr«»tioao of olaoat puro «lrooa
woro fonad oa tbo nirfooo of tho dark ooad. A ooapl* of <3.irk oaAd tokoci aj
Mortoao froa thio boooh ooatalaod 9ft porc^at ollophoio.
' 0«>. Oil.
Saaploo oro lit tod oo tho follo»ior n«jr«. L«c*tiowi of o^aploo iro ohoi
oa
LI it of aa*pl«a froaboaoh 6ea««atration*
aaplo Thick, farcont f<m}T» r Ftrctnt *T)U>. ft. fiald lab. oboa.
ecu at oount
1.7 0.014
Hit 3.6
LootIIOK aad doicriptioa
mio
F183 0.3 0.023 0.0*3
FBS7 3.0 0.006
0.010
FS5b 0.3. 0.010
nst *.5 o.
O.Oli
t.s o.oo«
5.006
0,8ft 0.06? 0.040 0.006
1,7 0.011
1.6 0.010
tornV. of Potto ffcdro low
at Mid of
lack «ad liikt Mind Imjroro, ju»t S. of foal* fodfm loach OB fe«*ob la front of
llnck ooad, 8 fti. I. of it.
MAd 7.6 *. I. of
«ad light 1 OCA 1 1 on
l«/oro, »»o»
tand, thin la/oro of light to**, oa Woo» ju«t la front of »o«
, teo I. of Crnafeodrtoom*
llnck Mad* Mwh qu^rti mul light Mrt*ii*l , 76 ft. froa v«tor I. of foaleo Inlet on thu Gulf.
Mia4t attch qu^rti «»nd light Mttriiil, 75 ft. frco, wnUr, juat I* of fonloo lalat on th* Gulf*
Haok oaad, oloaor to vat«r v »» loontlooi.
Oocroo niok atadU ?0 ft, fro* vator1 mi. S. aloag boi%oh froo. 7117 aad 6.
of aatufml ccacentrfttion of ircon on aurfaoo of b*Bjh, block oaad only 4 lneh*i thiok, »AIM loca tion na /1S9.
ttaok OAOA 14 !. S. of T<mioo talot
Co;
Conclusion
Oa tha basis of tha prasaat lafcraatioa, tha dapasits of ha*ry slnarals
oa th* prasaat barvchas of Jiorlda a*saot ba ooaitidarad aa iaport^ot sourea of
urafliu aad.thorlua. Tha dlstrlbutloa of hsar/ siaarals in th* s*ads is too
to paratt a larfa opaarmtiosvF 4*
boat hapa of prodooiag umaiua n&d thorlua froa Florida sasds is la
i»-shora daposits amah as ara balai workad V tha uqsfcrays Oold Oarparatioa
naar Jaaktonvilla aad Uw tic alnaral Coao*ay at T*ro B«aoh. ftea axtaat of tliasa
dapasits is not kao«a smt taa oss baiac vorltad b/ tha Kuphra/s Gold Corpomtica
smst ba qpita larga to parsit tha aialag of 5000 taa« par dsgr. iraa in am op-
aratiaa of this slsa. tha r*dto*etlrltjr of tha aaad is so axtrasial/ low, that
tha actawl Mwunt of radiaaativa aatarlal ra*av*rad is not var/ l%rc«; 2iO teas
par da/ or 90,000 tons par yaar oont-»lnio« about 0.010 naraant urmAiuiaad about
0.02 Tsaroant 7h02. It ia ^uita possibla that othar l«rfa, lav-cradi daposlts
ba foiaaA.
X Ir
JACKSONVILLE °MINERAL CITY
PONTE VEDRA BEACH
-^HUMPHREYS GOLD CORP.
.FBS6-FBSI FBS2
ST. AUGUSTINE
-FBS4&5-FBS3
MELBOURNE
VERO BEACH RIZ MINERAL CO.
INDEX MAP OF PART OF FLORIDA
SHOWING LOCATIONS OF MINES AND SAMPLES
SCALE25 50 100 Mile*
SICTIQi II
or raosran^t urc cffaai locis in FLQRIJ*
Report
A. L.
entiaJ
ConfidentialOCMTflft
Introductory Svamarj. ...................... .................... .*....... 1
Phosphate rock. ................. * ......................,........ .. .*>" 2
Pebblo phosphate in the aain pebble field. ........................... 2
Occurrence. . .... i .................. .. ...,.»........* .. * 2
Mining and trert««nt. . .......................................... 3
Radioactivity. ................................................. 3
Ett*nr*s. ..................,.........................*..........
f i«14». ............ ................. ..^ ............. ft
Occurr«nc«. ..............I..................................... 6
Badio^stivity. ..................................................
Ffeospb&tio linettona. ................................................ 7
Coculan and p««t. ......................................................... 7
LUt of
No. 1 - Litt of §A*ples... .............. ............................ 9
iio. 8 - Calculation, of guivft.l tnt urnniuia. .......................... Ifi
Imbl« tto. 3 - Badioactivity, phorphnt«» and iarnni«a content of
product* fro* th* asin p«bbl« pnotrhftt« field. .............. 16
Illustrations (at «id of rm crt)
fig. 1 * Map of part of Morlda honing pho«ph*t* ar«as aad
Fl«. 2 - Indax nap, Florida am In p«bblA photphnt« finld,
locations of niu«9 tAculed.
S - Ooltian^r section of pebble photph*t^ b^d, 4 illes north
east of Iroofcer. Bradford Ccxmt/.
PAH CACTI Yin CT FftWEim AH& l«Wt luCJCS IV fLOUTA
A. L.
Jttno 30. If46
Introdaotory
fork vao bagaa V Irtort A. L«*roaco of tM toolafioal urr^qr «tet ool-
lootod JO aaopioo from oporatia* otapaal ia b»%k tho »oVhl« *nd hirA-rook
fiolda during u« *vwtr of 1944. Additloaa.! work »» dono *gr A* L. Slw^h
«A4 S. 1. C1tW»<th tarlac April oad «njr, If45. Vtt p«ctph*>t« dopotita w«r«
f main iaUn»*t tet i««tt ««r« alto Ba4» ctt p*at omd o«%odaa.
VM p«bbl« pao«phjiU« aro U« ao*t Blfhl/ r*di<mctiT» of tfct rooko
A dlr^t rotation o*«v«om r»dUm«UTiV «« pkotpb»%o omtomt io ohotin
lot oollo*to4 fro« oin-t of OOYOA eompoAi^o vftwtlxic ia th< *** poVblo flold.
Tbo /oarl/ production of th* ooApoaleo 1§ Vberet Uir«o mlllio* tout of photphnto
rook oomtftlniac 0.013 %o 0.017 p«reoat nramina, or 0.09S to 0.029 p«roont
TmloBt ur«ai«B with thorlua contrlbmtiaf aoomt 4§ p«roo*t of Iko iolol
II i» prob*bl« that forthtr Mapllm* ooul<l sU¥ll»h rotorvoa of Mrond illlom
%oa* of ph^iphnt* coftt*i&iac 0.010 i^oroovt urnniua. X«oorT«o of pteophoU rook
for tho mia pottblo fiold AFO liotod i>/ u*ui»fl*14 (lt4a) at two Ml lion loa*
toao ooatalalac aoro taaa 70 p^rooot B.P*l.
fko aard*rock p**tpa*to is low la r»dio«otiTltjr. Collooial r>ho§ph»to «aloA
! alood frtjo) Uo old aard-rock mtto pito io alto low in activltf-
to oo froa tho phoojakatic lavtaorao liaottoa* ar« aot
Saaploo of oo%\ULaa a*d oondjr p«at war* f oaad to t* Tory low ia radioactivity.
tiau
look
Photphata rook in Florida fall* into on» of thr«e fanaral
land^pabbla pha»pfe»t«, rlvar-pabbla phaioh^ta, and h*rd-r«ck phcsph*t*. fram
tha standpoint of production «ad ratarvoa, tba rl?*ivpabbla deposit* art of
tha la*st importune*. No tatting or aampling of tha rirer pabbla a«poiit« w«
»d« doriac thi» iA?«fttifation. Th* % » »p«bbl« phoiphAt«** will hanceforth
reftr toltl/ lo the lftftd-7*bble d«po%ltt.
In tA» aal fbblt
in ih<i «»in p«bbl* fi«ld
in Hillaborou^h «nd rolk OoxintliB and trt«nd§ into M%nmt«* nnd Kard«« Counti»§
to th* south. Soa« pro«p«ctlm« hat b«« don« In th« outlying p^bbl- fields,
kit tfe«re Has b«on no r refection fro* them.
of ?lioc«Q«» ^«, whl«h cont«in» Ih* p«bbl« phos-
li«a uooonfor«ftbly xi:on th« Mieets* ft%»thorn« li«»tton«. Th*
p*rtt of th« Bon« fall ft/ fr*v%l which ««k# ni? Ui« phosphate dj|p*tlta conftltt
of 4T»int Mid p^bbl^t of pho^pWto rock in * «mnfu« of tfiad <nd clnjr, all in
vmr/i«« proportion*, fhs t>«bH«i »rt cow»oaly lv iach«t loac ^* to* *vftr«c«
di«jn«tor it ^rob^bly tH»tw««n i uid ^ inch»ii. Th«gr vary in color fro* light
cngr to black. R«ooy«»r^ble photphmto «ajr *akt up « much « 50 pore«nt of
matrix (th* tuni "mmtrlx" is mod to dttlcniit* th« nhoopbmto, civ. ***&
as «iu«d), bat umuilljr const itutot 25 to 30 percent. Tha matrix it f rom 1 to
46 faat in thicknatt imc th« oT«rturd«n of amnd mmd ola/ Mgr ba more than SO
foot.* Tka uamal ovarhirdan-antrix ratio it about o&« to on«» tha
thiokaaat of «*ch bain^ about 15 faat.
OooAden
3.
Mining of both <y?erturd«m and axtrlx It dont by dre«-llnt
The amtrix It damped Into a mall pit on the Mi* ef tfci out where It It alxed
1th water aad pooped to tht we thin* pleat. At the watalaf pi ant t the part-
Iclta co*r«er thaa 1/33 or 3/64 of an Inch *r« s^p^raUd by «ftthl&
lac. Tht tls« of th« optnla^t la tht final jor*«i It d«t4iriintd b/ tat titt
of th« l%r«ttt t«a4 c^ln». Tht flntr purtlaltt of photpiuto art Mp*imt»a
froa tht taad and elajr partlcltt tgr aydrotaparatloa* Ublln^, tad flotation.
Tivt \xtmal produatt of tht «*th«rt *nd conc«nt rating plaatt tblth «o la to tht
aaufaoturt of f»rtlllt«rt ar«; oo«%r«t p^bhln, flat pfttobl* (oft«c OAlltd
rook) , aad tht flat phosphatt rook or coaatatr*ttt. At toot aiats
all thn photphat* oaa W rtooTtr^d by «aahlaf and torttala*; aoat of
thu photphatt pnrtloltt are l«ir«tr thaa tht toartttt taa4 era Int.
Tht ttulvalmit uraalu* ton t ant of th* aaapltt «mt dwt«ndn«d V
, tlther In th* field or labor »tory. Soat h«vt both fltld aad labtrattr/
couatt. A miabtr of tht taapltt havm b«tn ch««lcall/ «ual7«^ f or mraaluai aad
to** h«r« b^en tpactrocraphloalljr aaal/ted for thorlaa. Tht rf» units of thttt
dtitralnatlont art givm la th* 11 tt of taaplot (t»blt 1).
About 46 ptro«nt of th« radloaotlYlt/ of aott of tht fctapltt It probabl/
dat to thorium. HIM tavpltt for whiofe both thorlua aad uraaltai aavt b««n
dttormlntd am lltttd In tablt 2. Alto iho«a it th« calomlattd t^ulraltat^
uraalu*. iad for nott of the taapltt thlt afreet veil with tqulrnltnt ur*nl\»a
by l*bor*tor/ countla^.
The loottloat of the alntt froa vftilch t%»plt« were oolltottd are thtwa
on th« ladex amp of the aain pebble field (flft. 8). Saftplet of the Tarlout pro-
ducts of the washers and flotation plants have shown th*t there is a definite,
but net absolute, relation between phosphate content and equivalent uranium,
the radioactive material is concentrated with the phosphate, fae percent i.F.L.
(Vena phosphate of lime), percent equivalent umaimm, and percent urnnium in
the usual products of the washers and flotation plants are sheen in tsible 3.
feme of th* fibres for B.P.L. contaat In this table are estimate* five* wjr
company officials at the time the samples were collected, others are from
approximate F^g determinations made in the Survey laboratory.
The pebble *nd U* phosphate concentrate have average equivalent uranium
contents of 0*028 and 0.023 percent respectively. Th* average uranium content
of the pebble on th« b«sis of ten samples which were chemically analysed is
0.01? percent, fhe phosphate concentrate, on the b«sis of seven sampled, con*
tains an ^vermge of 0.013 percent urmnium. Che reason for the grater %ctivity
of the pebble is not apparent as it contains less B.P.L. than the concentrate.
Samples of pebble from th« San tally mine of the Southern Phosphate Co. and the
South Fioree nine of the American Agricultural Gtumleal Co. (fig. 2} contain
more than 0.020 p-rcent uranium (table 1). The products from the Fence Valley
mine of th* International Minerals and Chemical Corp. are lower in radioactivity
than like products from the other mines (Uble 1). These differences in radio
activity and uranium content in different parts of the mcin Babble field ladi- .
cate a somewhat uneven distribution of unmitjsi and other r*4io<tctive materials.
A sample (FP54) of super* phos?h«te which was obttin^d from th* fertiliser
plsnt of the Ameriomn Agricultural Ohamical Co. at Fierce conUlnt 0.012 per-
c^nt umnium and 0.019 percent equivalent uranium by laboratory oouat. this
product contains IS percent P20ft which is equivalent to about 40 percent I.F.L.
8.
Oemfldentte)
etanifield-./ lists reserves for the s»in pebble field at of 1°38. Inown
_/ fttansfield, 0; It* , Phosphate re-sourees of florlda; tf. 8. Geol, Survey, . 934,
reserves are five* V Ma e>s follow! J
74 percent I.P.L. «ad abort 70 to 74 perc«*it B.P.L.
130,000,000 lone ton* 1,870,000*000 Ion* ton*
Annual production of phoai>tont« from th» Balm p*bblt field i» *bout thr«*
Kill Ion toAt which profebl/ contalnj MB AVt»r«c« of 0.013 to 0.017 p«rmmt
Md «i ATtz^t* of 0.023 to 0.028 ptrount «q«ival«it ttranUa. further
Uht ttttftbliah re»«rr«* of v«rml »llliMi tdn« of
0.020 p»rc«nt
ptbblt f iIfpebble fields are shown on the index map (fif. 1).
to find outcrops or to take saaplea were Bade only in Hamilton Gouty. Mo out-
orops eould be found. Parts of this field have been prospected by the Inter-
Minerals aad Chemical Oo. of mulberry, but no *«mr>les are available
'roB this work*
Jellards-/ described the section in a sink hole in Bradford County, about
_J Sellards, B. 1., Miner*!* industries* Fla. tool. Survey, 2nd Ann. lept. 190v» pp.
V four Biles northeast of Brooker. Here, 99 feet of Batrlx containing
amounts of pebble phosphate lies beneath 37 feet of shell aarl and covered
slope. This locality dees not lie within any of th* outlying pebble areas as
outlined by Mansfield (fi*. 1, samples 67, 63, and 69). The bottoa 10 feet of
CVm
this faction could not be reached, but outcrop readings were taken on Ik* re
mainder. Thli in ana of two pl«uses where mitcron counting was used In the
Florid* work. Details of outcrop counting and sssmlinc *re show on the columnar
section, (fi«. 3). (toe five-foot he* of pabble phos~h«ite was found to contain
0.012 percent efuiTBlent urtmiua by laboratory ocmnt. Tb4 pebbl* IB dark col«r*d
and »«k«» up 63 pf*re««t of this tod, conUint 0.015 percent ftiivAltnt uranium
1>7 laboratory count. Th« ola/ which is a binder for tha pabbla contains 0.006
p«rcant. Larga pabblt nnd ooncrntionnry aasaa* which occur at a narrow horizon
naar th« top of this bed contain 0.017 percent nranitoi, 0.032 p«rc«nt
rocfc photphite
aarA-roak phosphnta, utualljr conaldarad of Plioc«n» a£«, is
rasultin« fro a th* disintegration of tha Hawthorn* liittstona and th* solution
and radaposition of part of tha phosptetta. Tha hard-rock f iald is a loa* nar
row bait extending south from 9uw«mn«« County to Pasco Count/, fithin this bait,
tha bard- rock phosphate occurs in localised deposits in fra*s**nts of different
shape* and sites, aostl/ bould*rs, irragulArl/ distributed in a aatrix of sand,
elv* end toft whit* phosphate. Thn d*r>oslts ssgr be as snch as 100 feet in
thickness and aa/ be corered by as s»ch as 50 feet of orerbnrdan. In the work
able deposits* the h*rd-rock phosphat* foras 25 to 30 percent of the a*t*rial
and in aoeie places contains more than 80 percent B.P.L.
faaples of hurd-rock phosphate were obtained frca two Bines, both in Citrus
County, south of Dunnellon (fig. 1, saaplea 1 and 2. and ssxples 57 to 63).
One of these. Section 12 mine of tha C.A J. Cejsp Co., three Biles south of teft-
nellon. is tha only alne now operating in the h*rd-rock field, and of th* fire
Confidential
7.
, none contains «ore than 0,002 percent equivalent uranium by field count.
The shirking pho»rh%t* froa th* otVr aine, previously operated b> the same oomapay,
contains 0.003 percent efoiT*l*nt nr^nlxyw and the screen!*** 0.00? percent, both
V laboratory count*
Outcrop readings war* t«k«n on th^ wall of nn old hr.rd- rock pit, 4^ »!! §
north of E^innellon, Marion County, A two- foot «ii&pl« t t;\k»n at the r>oint whore
th* bait outcrop r«adin|[ m« obtnlnad (1? counts per «lnute)» «*» found to con
tain 0.003 percent equivalent umaiusby field count,
Soverml eompanles are temping eolloidal phoephnte fro» th* surface* of
old hard* rock wait* ponds which aro now dry. fhia aetfirlal §*Kraf»t«a at tho
far enct of the ponds. It ototaiaa 40 to 50 percent B.F.I, aad is used % ferti
liser without further treitaent. Saarolee fp6? and 63 are from an old pond adj*-
eamt to the Section 12 alne. The/ contain 0.003 and 0.005 percent e^iivsloat
urwiiuaby field oonnt. Samrple /?70, which cont*ln§ 0.007 equl relent uranium
V laboratory count it froa the Loncelt Phoiph»te Co.* Clark, Altchun Count/.
f?3 ii frnei the Br%dlej ^st^te alne <\t floral Cl^TtVCitrua Count/ end eontains
O.C06 p*rc*nt eouiv^l*uit ur«nlu« by leborntor/ count.
Pho ̂ phr. tic lift* fctone '-*
fwo eanplot ef liaostono thou^rht to be fro* the phoephatic Hawthorne for-
atien were taken in Ifaallton Count/ (fix. 1, atopies 65 and 44). Both aaaples
contain leai taaa 0.001. percent «<julr^lpnt ur^nlua by field count.
Coquiaa and peat
laapla 516^-522 eai cut from A two- foot bed of coquina oa t*a bank of the
iBdiM river nbout 9 allot south of fceVbournp, Brernrd Count/. Bo r%dlo-
activity is perceptible with th» field tnetrujient.
?wo fteapliM of p«*t MI* ooll*et«d at the aa»e loc*Ht/. this 1* m loowl/*
consolidated, bro«i, NUIG/ pmt«rial with a^undAnt orfmolc witter. Both «r« low
In r»dlo*ctlvlty. 4 two-foot laytr of dnrk brotn, iwidy wic* on the Wok of
nt T«ilc«, S«r«ao%a Couaty. conUlna 0.006 p«rc«nt qulTalwat uranlua
count. Thla materi-d «mdfts Into tha WMk tand balo*.
Confidential f.
fettle We. 1 - Uvt of
Pereemt e*uiT. If Percent U Percent TbO field lib. Chea. epeet. 2 eeii&t count
.lee
Deeeriptioa and leoetie*
TP2
m
m
fPS
mTV?
mo
mimam*fP14
0.003
\
0.00?
0.004
0.024 ^ 0.01
0.024 0.018 0.01
0.0»4 0.014 0.01
0.017 0.012 0.01
0.004 0.004
0.003
0.011 0.004
0.004
0.003
0.017 O.OW
o.ott o.oit o.oot
h*rd reek phetphete (ttdprln^ pa duet) C- 4 J* Cn*p Oe. vine Fella!*, ^rn^ode Oount/.
M«.IM.
wette fro* e«ihinir of hard rook pfceephite, lrm41ej[_I»titte aiAe,flor"! City , gfj^njuido Count/T".
74^ l.P.L. ooncentrnte, Ooronet Phoephete Co.. uoreaet, ttlle* eoreQ^h Coont/.
7B% l.P.L. eeneentret**
. pebble pkeepe^te, Tt-TJfl l.P.L.
tit«r teilluce, 42^ B.P.L.
flotfttlot. b«&de t 30^ B.T.L.
flctatlon Wilt, leee than 5< 1
entrix, 4CK r.K.L. , Swift 4 Co. fertilieer Vorke. A4rict»le v Pol County.
flotation tnllln^a, 96^ 110^
flotation tail lac A, 84^ 410^
oaeeatmt^e, T7i l.P.L.
pebble pkaeplMtet 73^ l.P.t.
7P14
v
o.cai 0.004
O.OJt 0.013 0.01
1*P.L.« iaeri Oo.. l*tea Perk, Polk
Confidential
10.
Tall* Io. 1 - Lilt of oaaploo continue*
Saaplo Pftrooat o^ui % 9 Porconl V Forcont taO. DooariptlOB aad looott< ho. fl-ld Ub. cAoa. opoot.
miO.OOJ
0.009 0.004
, 105 3-F'L.
fro* old
IF14
FF90
FFH
0.010 0.009
0.004 o.ooa
O.OJ4 0.013
ftfttrlx. Ifijt J./.i. , AatrletAomlttir*! Ch^fllcnl Co. toath
*ia*. ?l»rc«, Folk Count/.
0.09
J10
14 M»oH oMoatimU, l.F.L.
f?t9 o.on 0.009
FF3J \ 0.093 0.009
FF9i 0.093 0.009
FF90 0.009
0.01
0.01
Mlaia* Co. 91 iao» lariow. Folk Couaty.
flotattea ooaoontmt«t», 19/f l.F.L.
pooblo paoopltoto, 70i l.F.L.
FF9T
FF94
0.010 0.004
0.09T 0.010
0.009
0.09
do^rlo froa ol« work, l$-ao4 l.F.L Faava/ aiao of ihm Kouttooia Foot. Go. » Hifblaod Cit/, Polk Couai/*
o^c«utr*t », 75^ l.F.t.
FF99
fFJO
0.009 0.00?
0.019 0.007
oashor aliao, jUMrloon C/tnlaid Go.. lo,Wn Fork, Folk Oomat/.
'fPil 0.004
>T39 0.004 0.010
**** 0.010 0.014
ola/ ttador aetrix, Fo*oo fallo/ Ino of th* Jnt»mjitionft' aa4 Oboaicul Corp. , Polk
booty clay aatrix
TIo.
11,
Forcoatfifld
ToVU to. 1 - Li »t c»f
. U Porcxrat tj Porcrnt Th0
con ti mod
:>»jrl:tiou location
0.011 0.011
TV2* 0.002
ip«6 o.oo<
of t*1>l« mad flotation ooac«ctrnt«», 76.' f. .L. or better.
flotation taila,
potrifitd voed uid ben* iekod f ro»
0.01$ 0.017 0.013
FP35
7F^9
IMO
FP41
mam*FP44
0.0o5
O.OM
0.001
0.0ft 0.041
O.OSS O.OM
O.OM O.OM
o.oaa o.oa?
0.021
0.081
0.015
0.015
B.F.I. 128 «ln« of Int«»rr.-tltjri.>l uintrol Oo. .
ptbfclt. 5/8 to ! . *»0.P.L
flna pOblo, Im to J/8«. 74lt B.P.I
tobris,
oo«rto aprro*. 7Q^ B.P.I.
«l%s«tf ler proauct , 14-90 Book
imo of th+ IcmthoruCorp., ?olk Go oat/.
IM5 0.0*8 o.oa 0.015
IF45 0.038 0.019 (
7P47 0.(X57 0.015 0.0 BO
p?a o.ooe
Mtrix, 3»-40< 1. P. &.»Plfiroo »ln« of th* AM«rlc«n oullurml Choaltml Oo.. Polk Count/,
oo*r«o
flno
B.P.L.
B.P.L.
fF4f N 0.010 0.007 flotfitio» food, ooreoaod from drill coro. co&taini »bttad. qtc., Bo>^tt« tract of tfe« Aj»«rlc*n A^riculturnl Choaioml Co.
Confidentialfaait Bo. 1 - U§t of *?!*« eoatlntd
Saapla Forooat o*uir. U Forwent U F«ifo«nt Th02 Dotarlptioa amd loctticn Bo. fiold lab. <UM«.
_____count aaaat____________________________
FPflO O.Olt O.Ott 0.014 ola/oy aatrix, 4«Kl.P.L., 0«r-atrtinffl ain« of AA«ricnn icri- eultural Ch«aical Co., filltboroo^h Count/»
FF11 0.019 0.019 0.017 rogul** po«ol», 77% B.P.L*
fTll 0.014
IMl 0.011 flotatioa
FF54 0.014 O.OM 0.019
IFM 0.008
0.014 0.019 0.011lisor plaat of th« cultural Ohoalcftl Co.. Folk County.
FF5? nont c-o»r«* prvoaot* C. A J. Caap Ca.Section 11 aino (h«ird*roak pao».)
i, Bomaado
FFM 0.001
FFflt 0.001
FF60 0.001 t*tl0 froa va»a«r
JT61 aoao oo«r«« rojooto
JT41 0.001 colloidal paoipatU from adjacoatop oration ay Can, 50-52^ B.f.L.
IT43 0.001 colloidal pfcaopfcat*.
F M4 0.001 1.0* fcara-roek phoapbato froa oldpit 4\ alias norU of karioa
Confidential
JT66
Oonfldonti*!Mo* 1 * List of »a«plot continued
OOAt tl
pott.Lo f«ro*nt oquir. V P«ro«mt V Foroont fb02 Diooription aftd Uoatlon
lo. fiold Ub. ohoa.
0.001
0.001
« (t). mar 50, 0.6 1 !! north of lu«nnoo UTtr tori***, ftyiilton Oountj.
evthomo ll»«8iono (?) *t nvanoo
f**7 O.OU O.Olt
O.Olt 0.030 0.013
O.OBt 0.032 0.017
6.0' pobtolo pteiynato inooloro4 cl*j fro« sink Holt 5 vlloi mtt of IOOJBOJP. irodford
4« nark ! / ? at ^ottoa of
dark pot>VLo ind n»to« fro* Koriion n*«r top of FPC7.
fPTO 0.006 0.007 olloltal pnotphfito fr«» old rook w*tt« pi to, Lonoal* Co. Clark, Alaotaaa Ooxuitjr.
CaofLdontial
S«a*>lo
Confidential
faalo lo. 1 - Litt of tax*!** continued
not r»l»tad ta tha ph»aph«taa
14.
fi«14 ormnt
9169-fttt
0.008
t.0
a.o
0.000 t.o
, 9 !! south of
?o«t,
of
, toft, ttrocn, aiuM loc«tl<m
ia, tamd/, aa*w location.
tasd/, beach at Venice,
Fla.
Confidential
IB.
Confidential
fttbl* lo. a - of ar*nlu»
P*rc«*t V Percent fbO? P«ronnt qviv. U F*r««at ^ulv, U
ffl*
y?tIFT
?P14
FF16
mim*imipa?
0.016
0.016
0.01*
o.oiao.ou0.013
o.ootO.OOt x
0.010
0.01
0.01
0.01
o.oot0.01
o.oa0.01
0.01
o.oa
0*028
0.09*
0.019
O.Oli
0.020
0.08?
0.016
0.016
0.084
o.oat0.0*
0.017
0.(»
O.Ott
0.036
o.oa*
0,023
0.027
Confidential
U. i>. OtULUOICAL. iUKVtT
-j . _ _ G-E-DRG-IA
LEON r> .V"' \® C~f "^N0 f ,V'MAD,SO N VJ^£TO < *Tflii.* ^ / 65*«L,y « BAKt
j to ' r / ° i x 1 vx ' !--( Liv« oa kl
| / i5UWANNPE| i
~^V->\T A Y L o R L~X | QJ /ON i OHX^-V HFAY*TT*N k 0 (̂ 6^fl&
\ L vf&v.^.**\ ' - \" \ffis70V. / fclLCHRlS^^vClork
T ' \#3lALACHV-r-m^..X ./ XM[X LtvHp
c _ ^%f/ L IpiV^fe
VmA/a-fe; Phosphate areas from ClTRUJ^A Mansfield, U.S.G.S Bull. 7 ~~<3« 934, Plate S \ \
PHER NAUJ
A P A S C
V~HILLS80ROy^Ti«L » ^ ? '" j^ \«x^*
VN MAlJ/
^SAR>
^5*^^
LEGEND \
7^ Sample location and number of sample
'""f'r'r '''
','/"/,'/,?, Outlying pebble phosphate areas
r v^- - ->.
' ' Ifi ' ' '\ blASSAJJ «
! /"4«. / ^' A: F T x O Jack5pnvi|le
!/^DUV/AL !\-dWKT^ -! \- X S P'/^''«a lA^hr^i \_ «' ---iSTJOHMk"\oi *'" \ \
v^-y V1 Jll
UA | _ f-'\ POTNAM \
Vw ,/' \ \FLA*"«\
^ S^-J\^r A R i o ^ \7 J SVOLUSIA»Aellcn ,' f£^ tt\7TO« ! /&\ ^-- » ~ Z'/A \ \\
! - A K efeJA-, j\\ j r ^_; ^^ r -W\/Floral i ,'seMiMOLf-N 1 \ r\^v \City L__ \| VljA
A jji I ol/T^^||| ORA N6 , ^\UJ>
|V) ! ^-^ i --- i < W0 H""M "A" * \l[JG-H >X^^ \ * O^M«I bourn*
j^ffi$fy\ ) osceouA or jk-522,523 8,^OVV^/Leik«and v. ^\ 5£^
^^W]POL1< r\ U «"\ ^ ~ r ~ ~ ~ ~ | ") %
V i \VT ,,l HARDtt \oKetcHooet V\
k \ ^ [STUWC.S-Ui r""" """"""Xro AJ5ofA-jo« »»TO ^J .X Nk MART1H N\
<\^r-^' . [oKEfcHoere Y~--~ ^\ ^RLOTTt -AD.sl«" V i
in/ >^" I . PALM DE-ACH |
\ ̂ 6b/* * ^ H t M 0 R Y j J
Va^^-i r J" "j ! J' f I i I , ' 1
y%%%. Hard reck phosphate field
syyy/y// Main pebble phosphate fitf//////S ' ' '
Area shown on E~ia,. 2 which
( "JBRO^ARDJ
?/^ \ C 0 L L . * R , J
V _ i "" " /I?/Vw V-e>. _ J _ . /[
\ locations of mines sampled in the "^MONROf ^ Miami w,. f main pebhl* phnsphatt» ffeM >k 1 /
\ i ° A ° iFIG. 1 - MAP OF PART OF FLORIDA \ k\! I/
^^ Ci /jSHOWING PHOSPHATE AREAS AND SAMPLE LOCATIONS fV-J 1 fivjeQ/
* \ "» ' r> t^^^^^jf25 0 Z« 50 75 100 MlUM > ^^
/
,
Table No. 6 - Radioactivity, phosphate and uranium content of products from the main pebble phosphate field
Coronet Phosphate Co. Coronet
Swift & Co. Agricola
American Cyanimid Co. Baton Park
American Cyanimid Co. Brewster
American Agricultural Chemical Co.
South Pierce mine
American Agricultural Chemical Co.
Carmichael mine/
American Agricultural Chemical Co. Boyette Tract
Phosphate Mining Co. 91 mine, Bar tow
Southern Phosphate Co. Pan way mine
Southern Phosphate Co. San Sully mine
International Minerals & Chemical Corp. ^
122 mine
International Minerals & Chemical Corp.
Peace Valley mine ~
Average
Matrix
%B:P.L.
40
3d
15
45
58
39
% equiv. U
0.013
0.012
0.021
0.010
0.022
0.021
0.018(f)
0.010
0.015
*u
0.006
0.007
0.015
0.005
0.014
0.009
0.013
Pebble
% B.P.L.
73
73
70 68 67
77
70
70 70 '
7469
60
71
% equiv. U
0.024
0.022
0.035 0.039 0.036
0.029(f)
0.023
0.024 0.029(f)
0.026(f) 0.035(f)
0.015
0.028
£u
0.016
0.012
0.020 0.023 0.013
0.017
0.009
0.081 0.023
0.012
Washer tails for flotation%
B.P.L.
30
25
20
25
%equiv. U
0.008
0.009
0.009
0.013(fJ
0.007
0.010
0.009
#U
0.006
0.007
0.004
0.006
Washer tails not floated
% B.P.L.
5
5
% equiv. U
0.006
0.006
0.002(f)
0.005
£U
0.002
Concentrates
% B.P.L.
7578
77
75 77
80
a
75
75
76
76
*equiv. U
0.023 0.024
0.017
0.021 0.022
0.034
0.023
0.027
0.027
0.011
0.023
£u
0.015
0.009
0.013
0.019
0.009
0.010
0.015
-
Flotation tails
% B.P.L.
5
5
10
15
4
% equiv. U
0.003
0.003 0.004
0.002
0.002
0.005
0.002
0.002
0.003
f'./ .
(f) equivalent ur,anium determination by field gamma countinjg, all others by laboratory counting
U.S
. G
EO
LO
GIC
AL
S
UR
VE
Y
R2
IER
22
ER
23 E
R 2
4 E
R 2
5 E
<A (\ 1-
V} at CM o
f) (A 1-
(VI 1-
HIL
, __
_ _
r
__T-
<-
LS
BO
RO
UG
H
3.
j -
~^ ^
MA
NA
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E
PLA
NT
C
ITY
n
1
LAK
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CO
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T*)
to1'
6'
' , H _
____
CO
UN
TY
1 CO
UN
TY
iR
22 E
TlM
ULB
ER
R
PIE
RC
E
Oi
BR
EW
ST
-,
PO
LK
HA
RD
EE
R2
3 E
EA
TO
N
4
X/P
AR
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#
v/ Y
7.
B
12.
AG
RI
%
O
ER
2. C
OU
NT
Y
CO
UN
TY
R 2
4 E
**A
RT
OW
B.
CO
LA F
T.
ME
AD
E
R 2
5 E
/TfK
AM
ER
ICA
N
AG
RIC
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UR
AL
CH
EM
ICA
L C
O.
*-/.
CA
RM
ICH
AE
L
MIN
E
*2.
SO
UT
H
PIE
RC
E
MIN
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* 3.
B
OY
ET
TE
T
RA
CT
AM
ER
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CY
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IMID
C
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',4.
MIN
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AR
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AT
ON
P
AR
K1
5.
OLD
M
INE
CO
RO
NE
T
\,6
. H
OP
EW
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L
INT
ER
NA
TH
.
CH
EM
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L
l,7.
12
2
MIN
E
I ft
PE
AC
E
VA
L
, P
HO
SP
HA
Ti
( 9.
91
M
INE
SO
UT
HE
RN
10
. S
AN
G
UL
LY
-/
/.
PA
UW
AY
M
SW
IFT
A
"1
2.
MIN
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United States Department of the Interior Geological Survey
Fig. 5 Section containing pebble phosphate beds, 4 miles north east of Brooker, Bradford County, Fla. (after Sellards)
ACTIVITYJO 40 30 20 /O
< \
>
c
0
0
o
<
c
o
D
3
1
\
0
Thickness in feet
14.0
25.5
5.0
4.0
2.5
5.0
4.0
5.0
5.0
1.5
4.0
Columnar Section
-̂T_iT_r_r
1 -,_ 31 -p-inm
^iS^i""^I cO 1
3? ' 'il^i 1 ^-
- c -e -0-
BACTIVITY- ^ o Count per minute at outt|~lD
|| DESCRIPTION
Covered slope
Light-colored marl, full of small shells.
/37# clay, 63# dark pebble, clay 0.006# equiv. U, pebble O.OIS^ by lab. count: darker layer at bottom contains 0.020$
equiv. U, O.Ol^t U: large pebble and con--m«7 cretionary masses near top contain 0«,032$ Jrt> equiv. U, 0,OV# Ue
^^^^ Sandy limestone ledge with fossils, o.y* Yellow ssnd with fossil plants end pebble
concretionary limestone ledge
Gray s^d-clay, oxidizing yellow
i.o», concretionary ledge with pebble
Sandy matrix with pebble phosphete
Concretionary ledge
clayey matrix with black pebble phosphste
Concretionary ledpe
Clayey matrix with black pebble phosphate
^ Vater
Formation
SCAL£ Top 0 ^0 ?0 ?0
Approximate radioactivity determined by testing^ *y Meosured and M led crushed rock, expressed in thousandths or percent . T on *\ '
i j. AJ j. ./ j. j f it i A. L. Slaughter equivalent uranium. Not determined for all samples. m j-i *rk -icnc April 30, l»45Uranium content determined by chemical analysis,
expressed in thousandths of percent.1001*71
ConfidentialTtbio it. 1 - Lift of
Mo.
m
TF2
m
IF4
mmFPT
FPS
trt
mo
mimafFli
FF14
P«r«aat equlr. V fisld Ino.
0.003
0*007
0.006
0.093
0.024
~ 0.0*4
0.017
0.00$
0.009
0.013
0.004
0.003
0.017
O.Ofit
Poroeat V Parcant TbO Dttoriptlon and loeatioa Ohta. apoat. ^
h^rd reok paotpaato (saipoia^ rr.- duet) C. 4 J. Oap Oo. «lno
\ F«liei*» l»m«iado Count/.
MP~1"*t
vacto fro a vaihiait of hard rook
Flonl City, Ksrn*ftdo County^ )
"0.01 70 B.F.L. ooao«ntr%to, Coronet Fbaaphalo Go. t Coroaot* Bill*-
0*016 0*01 79% l.F.L. tonaantrat*.
0.016 0.01 . pobbl* phavpaato, 7^-7J^ l.F.L.
O.Olf 0.01 altar taJltu**, CH B.F.L.
0*004 flotation baada. 30^ B.T.L.
flctatloa tails, lott than 5< B.T4
0.006 aatrlx, 4CK P.K.L. , Swift 4 Oo. Fertiliser Works, i4rlcol«. Folk
flotation tnlllo48, t6^ 010*
flotatiaa tailiAC«, )( $10,
O.OOt aoaaaatratas, TTjt l.p.L.
0.01S 0.009 pabolo phaaphata» 73< l.P.L.
FFli
FP16
o.om
0.0*8 0.013 0.01
C/mnlmid Co.. I*Ua Faxk, Folk Comtgr.
l.F.L.
Ckmfldentia]