| Deposit ID | 10047860 |
|---|---|
| MRDS ID | M700191 |
| Record type | Site |
| Current site name | Skamania Mine |
| Related records | 10277438 |
| Geographic coordinates: | -122.20535, 45.72287 (WGS84) |
|---|---|
| Elevation | 579 |
| Location accuracy | 1000(meters) |
| Relative position | 9.5 MI NORTH OF PRINDLE; 17 MI FROM WASHOUGAL; ABOUT 5.5 MI NORTH-NORTHEAST OF BOBS MOUNTAIN, Location Given Is For Mine Labeled Last Chance On Topo Map In Southwest Corner Of Section On The Assumption That Skamania And Last Chance Were Labeled Backwards. This Does Not Agree With Either Moen's Or Huntting's Section Descriptions |
Political divisions (FIPS codes)
Skamania(county)
Washington(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Bobs Mountain(quadrangle 1:24,000 scale)
Vancouver(quadrangle 1:100,000 scale)
Vancouver(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Lower Columbia-Sandy(hydrologic unit)
Lower Columbia(hydrologic accounting unit)
Lower Columbia(hydrologic subregion)
Pacific Northwest(hydrologic region)
Federal lands
Gifford Pinchot National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Washington | Skamania |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Willamette | 003N | 005E | 21 | NE4 OF SW4 | Washington |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Gold | Secondary |
| Silver | Secondary |
| Vanadium Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Bornite | Ore |
| Chalcocite | Ore |
| Chalcopyrite | Ore |
| Chrysocolla | Ore |
| Covellite | Ore |
| Malachite | Ore |
| Pyrite | Ore |
| Result | ASSAYS OF HAND SORTED ORE: 15.8-23.5% CU, 0.01-0.18 OZ/TON AU, 8.7-18.5 OZ/TON AG (1916). USBM SAMPLES: 2% CU, 1.0 OZ/TON AG OVER AVERAGE THICKNESS OF 3.5 FT FOR 1,374 FT. 1930 SAMPLES: 1.05-5.54% CU ON VEIN THICKNESS OF 8 IN.-6 FT. 13 SAMPLES FROM EAST ADIT: 1.05-12.2% CU, NIL-0.03 OZ/TON AU, 0.04-11.6 OZ/TON AG. 2 SAMPLES FROM WEST ADIT: 0.25-0.35% CU. VEIN QUARTZ ON THE DUMP: TR-5% CU. AVERAGE OF 4 SAMPLES: 4.59% CU, 0.06 OZ/TON AU, 3.29 OZ/TON AG. SEE MOEN (1977) FOR OTHER ASSAYS |
|---|
| Model code | 85 |
|---|---|
| USGS model code | 22c |
| Deposit model name | Polymetallic veins |
| Mark3 model number | 46 |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite | ||||||||
| Rock unit name | Skamania Volcanics | ||||||||
| Rock description | Skamania Volcanics | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite |
| Rock unit name | Silver Star Pluton |
| Rock description | Silver Star Pluton |
| (1) | -122.20535, 45.72287 |
|---|
| General form | VEIN |
|---|---|
| Strike | N76W |
| Dip | 80N |
| Thickness | 1.83M |
| Length | 418.8M |
| Width | 152.4M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1950 |
| Production years | 1966 |
| District name | Washougal District |
|---|
| Ownership category | Private |
|---|---|
| Area name | Property Is Said To Be On Deeded Land, But Topo Map Shows All Of Section To Be Within Gifford Pinchot National Forest |
| Type | Operator |
|---|---|
| Owner | Northwest Mining Co. |
| Home office | Portland, Or |
| First year | 1977 |
| Type | Owner |
|---|---|
| Owner | L. P. Montchalin, Washougal, And Mabel Mcgowan, Chinook |
| First year | 1956 |
| Type of workings | Unknown |
|---|---|
| Length | 416.36M |
| Overall depth | 139.6M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M700191 |
HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 78.
MOEN, W.S., 1977, ST. HELENS AND WASHOUGAL MINING DISTRICTS OF THE SOUTHERN CASCADES OF WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES INFORMATION CIRCULAR 60, P. 43, 50-52.
PHILLIPS, W.M., 1987, GEOLOGIC MAP OF THE VANCOUVER QUADRANGLE, WASHINGTON AND OREGON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 87-10, SCALE 1:100,000.
MOEN (1977 )
| Subject category | Comment text |
|---|---|
| Deposit | Discovery Year: 1900'S |
| Deposit | QUARTZ FISSURE VEIN IN QUARTZ DIORITE OF SILVER STAR PLUTON. VEIN CONSISTS OF WHITE VUGGY QUARTZ 1-6 FT THICK. SOME PARTS OF VEIN CONSIST OF SEVERAL THIN PARALLEL QUARTZ VEINS SEPARATED BY BRECCIATED AND SILICIFIED WALL ROCK AND GOUGE. SEVERAL NARROW BARREN QUARTZ VEINS PARALLEL MAIN VEIN. NEAR SURFACE PART OF VEIN IS OXIDIZED. ORE MINERALS CHIEFLY DISSEMINATED IN QUARTZ BUT LOCALLY FORM ISOLATED LENSES TO SEVERAL INCHES THICK. |
| Deposit | LOCATION MAP AND MAPS OF MINE WORKINGS AVAILABLE, MOEN (1977). ; INFO.SRC : 1 PUB LIT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-NOV-81 | Caress, Mary E. (Evarts, Russ) | U.S. Geological Survey | |
| Updater | 01-NOV-92 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.