Description
Glenn C. Morton
Commodities
PrimaryKaolin
Commodity typeN
Deposit
Deposit typeReplacement
Deposit sizeN
Orebody formIRREGULAR
Ore controlSteeply Inclined Fault
Materials
Ore mineralsKaolinite
GangueFluorite, Graphite, Gypsum, Magnetite, Opal, Orpiment, Pyrite, Realgar, Sericite
Geology
Host rockSandstone · Kootenai Formation
Associated rockRhyolite · Porphyritic Leucorhyolite
StructureDomal Uplift Of Sedimentary Rocks Related To Igneous Intrusion, Steeply Inclined Fault
Tectonic settingArea Of Isolated Uplifts In Great Plains
AlterationArkose To Kaolinite
Economic & production
Development statusOccurrence
Discovery year1936
Identification
Deposit ID10078278
MRDS IDW026534
Alternate namesLewistown Kaolinite
RegionNA
Data scoreB
Coordinates47.16186, -109.51802
References
ROBY, R. N., AND ROBERTSON, A. F., 1949 , INVESTIGATION OF WHITEWARE CLAY DEPOSIT, FERGUS COUNTY, MONT.; US BUR MINES RI 4416 , 11 P.DOUGAN, C. W., 1947 , DICKITE - CLAY DEPOSIT OF FERGUS COUNTY, MONT. BUR MINES AND GEOL. MISC. CONTR. NO. 9 , 11 P.MILLER, R. N., 1959 , GEOLOGY OF THE SOUTH MOCCASIN MOUNTAINS, FERGUS COUNTY, MONTANA: MONT. BUREAU OF MINES AND GEOL. MEM. 37 , P. 37 - 40.1942 DIREXPL USBM RI 4416SEE GENERAL REFERENCES1947 DIREXPL MONT. BUR MINES AND GEOL MISC. CONTR. 9ROBY, R. N., AND ROBERTSON, A. F., 1949 , WHITEWARE CLAY DEPOSIT