Commodities
TertiaryChromium, Iron
Commodity typeM
Materials
Other materialsChromite, Enstatite, Magnetite, Olivine, Serpentine
Economic & production
Development statusOccurrence
Discovery year1938
Identification
Deposit ID10131958
MRDS IDM700384
RegionNA
Data scoreB
Coordinates48.62621, -121.88734
References
GAUDETTE, H.E., GEOCHEMISTRY OF THE TWIN SISTERSULTRAMAFIC BODY, WASHINGTON, UNPUB. THESIS, UNIV. OFILLINOIS, 1953.WASH, DIV. OF MINES AND GEOL. BULL. 37, 1956.CHROMITE DEPOSITS OF TWIN SISTERS MTS., WASHINGTON.USGS STRATEGIC MINERALS INVENTORY MAP, 1943.WASH. DIV. OF MINES AND GEOL. BULL. 57, 1969.RAGAN, D.M., GEOL. OF TWIN SISTERS DUNITE NORTHERNCASCADES, WASHINGTON, UNPUB THESIS UNIV OF WASH, 1961.SPANSKI, G.T., TWIN SISTERS MTS, WASH, UNIV OFILLINOIS 1963.CHROMITE DEPOSITS OF THE THREE LAKES AREA, TWIN SISTERSRANGE, WHATCOM AND SKAGIT COUNTIES, WASH., SUNSHINEMINING CO. CONFIDENTIAL REPORT, 1942.WASH. STATE DIV. OF GEOL. AND EARTH RESOURCES, UNPUBDATA.