| Deposit ID | 10042375 |
|---|---|
| MRDS ID | M060137 |
| Record type | Site |
| Current site name | Sunset Mine |
| Related records | 10156485, 10056120 |
| Geographic coordinates: | -121.46399, 47.85703 (WGS84) |
|---|---|
| Elevation | 427 |
| Relative position | 6 MI NORTHEAST OF INDEX; ABOUT 0.75 MI NORTH OF TOM, DICK, AND HARRY LAKES |
Political divisions (FIPS codes)
Snohomish(county)
Washington(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Baring(quadrangle 1:24,000 scale)
Skykomish River(quadrangle 1:100,000 scale)
Wenatchee(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Skykomish(hydrologic unit)
Puget Sound(hydrologic accounting unit)
Puget Sound(hydrologic subregion)
Pacific Northwest(hydrologic region)
Federal lands
Mt. Baker-Snoqualmie National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Washington | Snohomish |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Willamette | 027N}027N | 010E}011E | 01}06 | Washington |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Silver | Secondary |
| Gold | Secondary |
| Molybdenum | Tertiary |
| Materials | Type of material |
|---|---|
| Bornite | Ore |
| Chalcocite | Ore |
| Chalcopyrite | Ore |
| Copper | Ore |
| Covellite | Ore |
| Cuprite | Ore |
| Marcasite | Ore |
| Molybdenite | Ore |
| Pyrite | Ore |
| Silver | Ore |
| Calcite | Gangue |
| Chlorite | Gangue |
| Kaolinite | Gangue |
| Quartz | Gangue |
| Serpentine | Gangue |
| Talc | Gangue |
| Result | AVERAGE FOR PRODUCTION: 2.45% CU, 0.59OZ/TON AG, 0.0057 OZ/TON AU. |
|---|
| Model code | 85 |
|---|---|
| USGS model code | 22c |
| Deposit model name | Polymetallic veins |
| Mark3 model number | 46 |
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite | ||
| |||
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Granitoid > Tonalite |
| Rock unit name | Index Batholith;Index Batholith |
| Rock description | Index Batholith;Index Batholith |
| (1) | -121.46399, 47.85703 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Wnw-Trending Fracture Zone. |
| General form | VEIN |
|---|---|
| Strike | N65-75W |
| Dip | 80-85NE |
| Plunge | 60 |
| Plunge direction | E |
| Thickness | 4.88M |
| Length | 609.6M |
| Depth to top | 0M |
| Depth to bottom | 167.64M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1897 |
| Discoverer | Arthur Egbert |
| Year of first production | 1902 |
| Production years | 1902-1905, 1907, 1916-1930 |
| District name | Index District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | In Mount Baker-Snoqualmie National Forest |
| Type | Operator |
|---|---|
| Owner | Granore Co. |
| First year | 1956 |
| Type | Owner |
|---|---|
| Owner | Index Mining Co. |
| First year | 1956 |
| Year | 1951 | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1902-1951 | ||||||||||||||||||||||||||||
| Material | ORE | ||||||||||||||||||||||||||||
| Accuracy | Accurate | ||||||||||||||||||||||||||||
| Description | Cp_Grade: ^2.45 % Cu, 0.59 Oz Ag/Ton, 0.005 Oz Au/Ton | ||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1976 | ||||||||||||||
| Indicated | 58000mt ore | ||||||||||||||
| |||||||||||||||
| Type of workings | Underground |
|---|---|
| Length | 3962.4M |
| Overall depth | 182.88M |
| Overall length | 304.8M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M060137 |
TOEPFER, P.H., 1953, INVESTIGATION OF THE SUNSET COPPER MINE, SNOHOMISH COUNTY, WASHINGTON: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 4989, 9 P.
WEAVER, C.E., 1912, GEOLOGY AND ORE DEPOSITS OF THE INDEX MINING DISTRICT: WASHINGTON GEOLOGICAL SURVEY BULLETIN 7, P. 71-73.
HUNTTING, M.T., 1956, MINERAL INVENTORY OF WASHINGTON - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 91.
GRANT, A.R., 1969, CHEMICAL AND PHYSICAL CONTROLS FOR BASE METAL DEPOSITION IN THE CASCADE RANGE OF WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULETIN 58, P. 78.
DERKEY, R.E., JOSEPH, N.L., AND LASMANIS, RAYMOND, 1990, METAL MINES OF WASHINGTON - PRELIMINARY REPORT: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, P. 368.
GRANT, A.R., 1976, REPORT OF EVALUATION, MINERAL RESOURCE ANALYSIS STUDY ON UNITED STATES FOREST SERVICE LAND, STATE OF WASHINGTON: PREPARED FOR U.S. FOREST SERVICE - REGION 6, CONTRACT NO. 004724N, P. 38-39.
BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY REPORT OF INVESTIGATIONS 6, P. 16.
1950 DIREXPL U.S. BUREAU OF MINES RPT INV. 4989
TOEPFER, 1953, P. 4
GRANT, 1976
| Subject category | Comment text |
|---|---|
| Deposit | 5 SHEAR ZONES A FEW INCHES TO 16 FT WIDE WITH ORE FORMING LENSES, DISSEMINATIONS, REPLACEMENTS, AND FRACTURE FILLINGS |
| Deposit | GRANT MAY BE SUGGESTING THAT THE DISTRICT HAS THE POTENTIAL FOR A PORPHYRY COPPER, BUT NONE HAS YET BEEN FOUND. IN THAT CASE, THIS DEPOSIT WOULD BE ONE OF THE ASSOCIATED VEIN DEPOSITS ; INFO.SRC : 1 PUB LIT |
| Deposit | MRDS RECORDS W017894, US53033 HAVE BEEN MERGED WITH THIS RECORD AND DELETED |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-SEP-1973 | Puffett, Willard P. | U.S. Geological Survey | |
| Updater | 01-APR-1991 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.