Mine detail: Sumner Chrome Group

Previously called 'Summer Chrome GroupBeck and Short Grub'

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Location

Lat / long: 48.65901, -121.95684

Resource(M)

Tertiary: Chromium, Iron
Other material: Chromite, Enstatite, Magnetite, Olivine, Serpentine
Discovery year: 1941

Production

Operation type: Surface
Development status: Occurrence

Geology

References

MRDSM700096
MAS530730007
DEP10228980
Reference{Deposit:: GAUDETTE, H.E., GEOCHEMISTRY OF THE TWIN SISTERS}{Deposit:: ULTRAMAFIC BODY, WASHINGTON, UNPUB. THESIS, UNIV. OF}{Deposit:: ILLINOIS, 1953.}{Deposit:: WA. DIV. MINES AND GEOL. BULLETIN 37, 1956, PART II,}{Deposit:: VOL. 1, P. 42.}{Deposit:: RAGAN, D.M., GEOL. OF TWIN SISTERS DUNITE NORTHERN}{Deposit:: CASCADES, WASHINGTON, UNPUB THESIS UNIV OF WASH, 1961.}{Deposit:: SPANSKI, G.T., TWIN SISTERS MTS, WASH, UNIV OF}{Deposit:: ILLINOIS 1963.}
ReporterRidenour, James