| Deposit ID | 10168284 |
|---|---|
| MRDS ID | W019433 |
| MAS/MILS ID | 0160170069 |
| Record type | Site |
| Current site name | Conjecture Mine |
| Related records | 10073378 |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -116.43045, 47.91546 (WGS84) |
| Elevation | 967 |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
Bonner(county)
Idaho(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Lakeview(quadrangle 1:24,000 scale)
Coeur D'Alene(quadrangle 1:100,000 scale)
Spokane(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Pend Oreille Lake(hydrologic unit)
Pend Oreille(hydrologic accounting unit)
Kootenai-Pend Oreille-Spokane(hydrologic subregion)
Pacific Northwest(hydrologic region)
Federal lands
Idaho Panhandle National Forests(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Idaho | Bonner |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Boise | 053 N | 001 W | 26 | C E2NW | Idaho |
| Commodity | Importance |
|---|---|
| Copper | Tertiary |
| Gold | Tertiary |
| Lead | Tertiary |
| Silver | Tertiary |
| Zinc Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Argentite | Unknown |
| Arsenopyrite | Unknown |
| Galena | Unknown |
| Pyrargyrite | Unknown |
| Pyrite | Unknown |
| Quartz | Unknown |
| Rhodochrosite | Unknown |
| Stibnite | Unknown |
| Tetrahedrite | Unknown |
| Main Entrance (1) | Piegan Group. |
|---|
| Strike | N40E | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dip | 65N | ||||||||||||||||||||||||
| Length | 1290M | ||||||||||||||||||||||||
| Width | 160M | ||||||||||||||||||||||||
| Area | 8HA | ||||||||||||||||||||||||
| |||||||||||||||||||||||||
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1894 |
| District name | Lakeview District |
|---|
| Type of mineral rights | Located Claim |
|---|---|
| Type of mineral rights | Patented |
| Ownership category | National Forest |
|---|---|
| Area name | Kaniksu National Forest |
| Type | Owner-Operator |
|---|---|
| Owner | Conjecture Mines Inc |
| ID | 1000411 |
| Interest | 100 |
| Home office | Washington |
| Year | 1975 |
| Type | Operator |
|---|---|
| Owner | Mineral Management Inc |
| ID | 1000411 |
| Home office | Washington |
| Year | 1980 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0160170069 | |
| USGS | Mineral Resources Data System | MRDS | W019433 | MAS references MRDS |
| Mine Safety and Health Administration | MSHA | MSHA | 1000411 | |
| Idaho Geological Survey | Idaho Mines and Prospects | IMP | SP__18 | http://www.idahogeology.org/ |
KUN 1974 IDAHO BUR MINES AND GEOL PAMPH 156
SAVAGE 1967 IDAHO BUR MINES AND GEOL COUNTY REPT 6
BELL 1906 7TH ANN REPT ON THE MINING INDUSTRY OF IDAHO: BOIS
MACDONALD 1905 USGS BULL 285 P 41-52
SOPER 1918 MINING AND SCI PRESS V 116 P 125
KUN 1970 MS THESIS UNIV OF IDAHO MOSCOW, IDAHO
CALKINS AND MACDONALD 1909 USGS BULL 384
MSHA RPT DATED SEPT 1980.
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 27-FEB-1984 | Kauffman, John D. | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 08/19/1985 |
|---|---|
| MSHA mine ID | 1000411 |
| Mine name (MSHA) | Conjecture Mine |
| Current operator | Minerals Management Inc |
| Current controller (parent) | Lawrence T Atkinson |
| Mine type | Underground (Metal / non-metal) |
MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.