Mine detail: Silver Still Mine

Previously called 'Eagle GroupSam GroupAddieSam and Eagle GroupNorth Star Property'

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Location

Lat / long:

44.56046, -117.06041

Resource(M)

Primary:	Silver
Tertiary:	Antimony, Tin, Zinc, Lead, Gold, Copper
Ore:	Boulangerite, Bournonite, Chalcopyrite, Enargite, Galena, Sphalerite, Stannite, Tetrahedrite, Wurtzite
Gangue:	Calcite, Marcasite, Pyrite, Quartz, Tourmaline
Orebody form:	LENTICULAR
Discovery year:	1870

Production

Operation type:	Underground
Production size:	Small
Development status:	Producer
First production started:	1923

Geology

Host type:	Diorite,Volcanic Rock (Aphanitic)
Associated rock:	Diorite;Perm-Jur
Associated type:	Diorite,Volcanic Rock (Aphanitic)
Structure:	Deposits On North Limb Of A Broad, Faulted Anticline Of General N.E. Trend, Trough Was Formed By A Westerly Dipping Basalt Dike And An Easterly Dipping Ore - Bearing Seam.
Tectonic:	Island Arc
Alteration processes:	Oxidation, Sericitization

References

MRDS	W013010
MAS	160870051
DEP	10070244
Reference	{Deposit:: ANDERSON, A. L., AND WAGNER, W. R., 1952, ORE DEPOSITS OF THE MINERAL DISTRICT, WASH. CTY., ID.: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 95, 26 P.}{Deposit:: LIVINGSTON, D. C., 1925, GEOLOGIC RECON. OF THE MINERAL AND CUDDY MTN. MINING DISTRICTS: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 13, P. 21.}{Deposit:: COOK, E. F., 1954, MINING GEOLOGY OF THE SEVEN DEVILS REGION, IDAHO BUR. OF MINES AND GEOLOGY PAMPHLET 97, 22 P.}{Deposit:: IDAHO DEPT. OF LABOR AND INDUSTRIAL SERVICES, FIRST ANNUAL REPORT ADDENDUM, JULY 1, 1974 - JUNE 30, 1975, 95 P.}{Deposit:: 5) ANDERSON, A.L., 1963 , SILVER MINERALIZATION IN THE MINERAL DISTRICT, WASHINGTON COUNTY, IDAHO: ECON. GEOLOGY, V. 58 , NO. 8 , P. 1195 - 1217}{Deposit:: 1925 RECON ID. BUREAU OF MINES GEOLOGY, PAM. 13.}{Deposit:: 1952 GEOLMAP ID. BUREAU OF MINES GEOLOGY, PAM. 95.}{Deposit:: 1954 COMPILE ID. BUREAU OF MINES GEOLOGY, PAM. 97}{Deposit:: 1975 COMPILE 1ST ANN. REPT. ADD., IDAHO DEPT. LABOR}{Production:: ANDERSON, A. L., AND WAGNER, W. R., 1952, IBM & G PAMPHLET 95. {{ COOK, E. F., 1954, ID. BUREAU OF MINES AND GEOL., PAMPHLET 97.}
Reporter	Nakai, Terry L.; Miller, Pat