| Deposit ID | 10048446 |
|---|---|
| MRDS ID | MP00033 |
| Record type | Site |
| Current site name | Seacrest |
| Alternate or previous names | Silver Creek, New York |
| Geographic coordinates: | -121.41593, 47.95288 (WGS84) |
|---|---|
| Elevation | 1219 |
| Relative position | ABOUT 2 MI SOUTH-SOUTHWEST OF MONTE CRISTO |
Political divisions (FIPS codes)
Snohomish(county)
Washington(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Monte Cristo(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 | 029N}028N | 011E}011E | 31,32,33}04,05,06,07,08,09 | Washington |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Molybdenum | Primary |
| Nickel Critical | Secondary |
| Chromium Critical | Secondary |
| Lead | Tertiary |
| Zinc Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Molybdenite | Ore |
| Pyrite | Ore |
| Result | ANALYSES OF NUMEROUS SAMPLES YIELDED MAXIMUMS OF 11.6% CU, 0.374% NI, 0.63% CR |
|---|
| Model code | 53 |
|---|---|
| USGS model code | 17 |
| Deposit model name | Porphyry Cu |
| Mark3 model number | 4 |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock | ||||
| Rock unit name | Eastern Melange Belt | ||||
| Rock description | Eastern Melange Belt | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Granitoid > Tonalite |
| Rock unit name | Tonalite Of Silver Creek; |
| Rock description | Tonalite Of Silver Creek; |
| (1) | -121.41593, 47.95288 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Transverse Fractures |
| General form | PERVASIVE FRACTURE FILLING, RARELY DISSEMINATED |
|---|---|
| Dip | } |
| General form | PERVASIVE FRACTURE FILLING, RARELY DISSEMINATED |
|---|---|
| Dip | } |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Silver Creek District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | In Snoqualmie National Forest |
| Type | Operator |
|---|---|
| Owner | Duval, Cities Service |
| First year | 1976 |
| Type | In-situ | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1983 | ||||||||||||||||||||||||||||
| Total resources | 2000mt ore | ||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | MP00033 |
CHURCH, S.E., TABOR, R.W., AND JOHNSON, F.L., 1983, MINERAL RESOURCE POTENTIAL OF THE GLACIER PEAK ROADLESS AREA, SNOHOMISH COUNTY, WASHINGTON: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-1380-C, SCALE 1:50,000.
JOHNSON, F.L., DENTON, D.K., IVERSON, S.R., MCCULLOCH, R.B., STEBBINS, S.A., AND STOTELMEYER, R.B., 1983, MINERAL RESOURCES OF THE GLACIER PEAK RARE II AREA (NO. L6031), SNOHOMISH COUNTY, WASHINGTON: U.S. BUREAU OF MINES OPEN-FILE REPORT MLA 75-83, P. 8, 18-19, 36.
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. 37.
TABOR, R.W., FRIZZELL, V.A., JR., BOOTH, D.B., WHETTEN, J.T., WAITT, R.B., JR., AND ZARTMAN, R.E., 1982, PRELIMINARY GEOLOGIC MAP OF THE SKYKOMISH RIVER 1:100,000 QUADRANGLE, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 82-747, SCALE 1:100,000.
HOLLISTER, V.F., 1979, PORPHYRY COPPER-TYPE DEPOSITS OF THE CASCADE VOLCANIC ARC, WASHINGTON: MINERALS SCIENCE AND ENGINEERING, V. 11, P. 22-35.
JOHNSON AND OTHERS
| Subject category | Comment text |
|---|---|
| Deposit | PORPHYRY COPPER DEPOSIT IS ZONED WITH A CRUDE CU-MO CORE AND A PB-ZN PERIPHERY. DRILL CORES INTERSECTED ULTRAMAFIC ROCKS CONTAINING NI AND CU. THE PORPHYRY COPPER APPARENTLY WAS OVERPRINTED ON THE TERRANE CONTAINING THE ULTRAMAFIC DEPOSITS. STRIKE GIVEN IS TREND OF ULTRAMAFIC ROCKS |
| Deposit | SEE ALSO MRDS RECORD MP00186 |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1991 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.