Commodities
TertiaryIron, Chromium
Commodity typeM
Materials
Other materialsChromite, Enstatite, Magnetite, Olivine, Serpentine
Economic & production
Development statusOccurrence
Discovery year1941
Identification
Deposit ID10228980
MRDS IDM700096
Alternate namesSummer Chrome Group, Beck and Short Grub
RegionNA
Data scoreC
Coordinates48.65901, -121.95684
References
GAUDETTE, H.E., GEOCHEMISTRY OF THE TWIN SISTERSULTRAMAFIC BODY, WASHINGTON, UNPUB. THESIS, UNIV. OFILLINOIS, 1953.WA. DIV. MINES AND GEOL. BULLETIN 37, 1956, PART II,VOL. 1, P. 42.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.