Commodities
PrimaryGold, Copper, Silver
Commodity typeM
Deposit
Deposit sizeU
Ore controlA 20-Ft. Body Of Tourmaline At The Una Mine Is Described By Smith (1915, P. 184-185). The Brief Description Suggests The Tourmaline Is Massive Crystalline, But May Also Be A Portion Of A Breccia Pipe.
Materials
Ore mineralsChalcopyrite, Malachite
GangueTourmaline
Geology
Host rockDiorite
Tectonic settingThe Snoqualmie Batholith Is Part Of Early Magmatism Of The Cascade Magmatic Arc.
Economic & production
Development statusOccurrence
Identification
Deposit ID10055934
MRDS IDSP00146
Alternate namesJohn Stevens, Little Una;
RegionNA
Data scoreB
Coordinates47.6587, -121.41564
References
HUNTTING, M. T., 1956, INVENTORY OF WASHINGTON MINERALS-PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, 428 P.; V. 2, 67 P.LIVINGSTON, V.E., JR., 1971, GEOLOGY AND MINERAL RESOURCES OF KING COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 63, 200 P., 8 PL.SMITH, W.S., 1915, PETROLOGY AND ECONOMIC GEOLOGY OF THE SKYKOMISH BASIN, WASHINGTON: COLUMBIA UNIVERSITY SCHOOL OF MINES QUARTERLY, V. 36, NO. 2, P. 154-185.TABOR, R.W.; FRIZZELL, V.A., JR.; BOOTH, D.B.; WHETTEN, J.T.; WAITT, R.B.; ZARTMAN, R.E., 1982, PRELIMINARY GEOLOGIC MAP OF THE SKYKOMISH RIVER 1:100,000 QUADRANGLE, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 82-747, 31 P., 1 PL.WDGER OF-90-18