Mine detail: Conjecture Mine

Previously called ''

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Location

Lat / long:

47.91597, -116.43022

Resource(M)

Primary:	Silver
Secondary:	Gold, Lead, Zinc, Copper
Ore:	Argentite, Chalcopyrite, Galena, Sphalerite, Tetrahedrite
Gangue:	Pyrite, Quartz, Rhodochrosite, Siderite
Orebody form:	IRREGULAR-PINCH AND SWELL
Discovery year:	1888

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Production years:	1894 INTERMITTANT TO 1926
First production started:	1875

Geology

Host rock:	St. Regis Formation;St. Regis Formation;Revett Formation;Revett Formation;Wallace Formation;Wallace Formation;Wallace Formation
Host type:	Quartzite
Associated type:	Lamprophyre
Structure:	Purcell Trench To The North, Packsaddle-Johnson Fault, Spider Fault
Tectonic:	Platform Hingeline
Alteration processes:	Silicification

References

MRDS	W002479
DEP	10099666
Reference	{Deposit:: SAVAGE, C. N., 1967, GEOLOGY AND MINERAL RESOURCES OF BONNER COUNTY; IDAHO BUREAU OF MINES AND GEOLOGY, COUNTY REPORT NO. 6, 1967, P. 128}{Deposit:: SAMPSON, EDWARD, 1928, GEOLOGY AND SILVER ORE DEPOSITS OF THE PEND OREILLE DISTRICT, IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 31, P. 25}{Deposit:: ROSS, C. P., 1941, THE METAL AND COAL MINING DISTRICTS OF IDAHO: IDAHO BUR. OF MINES AND GEOLOGY PAMPHLET 57, P. 263}{Deposit:: 1963 DIREXPL FEDERAL RESOURCES CORP. NEGATIV}
Reporter	Petersen, David W.