Description
Joseph Pennington
Commodities
PrimaryIron, Copper
Commodity typeM
Deposit
Deposit sizeN
Orebody formTABULAR
Ore controlOre Bed Occurs On Moderate To Steep - Dipping Limb Of Fold, Qtzite Band On Hanging Wall Of Bed
Materials
Ore mineralsBornite, Chalcocite, Chrysocolla, Copper, Magnetite, Malachite
GangueGarnet, Pyrite, Quartz
Geology
Host rockIron Formation · Pre Belt
StructureSome Nw (?) Faults Displace Bed At North End Of Deposit
AlterationMinor Kaolinitization & Sericitization (?)
Economic & production
Development statusOccurrence
Discovery year1925
Identification
Deposit ID10096466
MRDS IDW026548
Alternate namesDictator and Belle Union, Ramshorn Mine
RegionNA
Data scoreC
Coordinates45.42684, -112.04392
References
CARR, M.S., GUILD, P.W., & WRIGHT, W.B., 1967 , IRON IN THE UNITED STATES: USGS M.R. 51 WITH SECTION ON PREC IRON FORMATIONS IN U. S. BY BAYLEY R. W. & JAMES, H. L.BAYLEY, R. W., AND JAMES H. L., 1973 , PRECAMBRIAN IRON FORMATIONS OF THE U. S., ECON. GEOL. V. 68 , NO. 7LEVANDOWSKI, D.W., 1956, GEOL OF SHERIDAN-ALDER AREAU OF MICH. PHDJAMES, H.L., AND WEIN, K.L., 1961, IRON DEPOSITS NEAR COPPER MOUNTAIN, MADISON COUNTY, MONTANA: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT.MONTANA BUREAU OF MINES AND GEOLOGY, 1969, SUMMARY OF INFORMATION ON IRON ORE, BITUMINOUS COAL, FLUORITE, AND CHROMITE: MONTANA BUREAU OF MINES AND GEOLOGY UNPUBLISHED SUMMARY.1961 GEOLMAP H. L. JAMES & K. L. WEIR, GEOL. MAP (OPENFILE)1967 COMPILE CARR GUILD & WRIGHT, PUBLISHED REPORT1969 COMPILE MBMG, SUMMARY REPORT, UNPUBLISHED