| Deposit ID | 10068218 |
|---|---|
| MRDS ID | W001168 |
| Record type | Site |
| Current site name | Mackinaw |
| Alternate or previous names | Weden Creek |
| Related records | 10056111 |
| Geographic coordinates: | -121.44315, 47.9812 (WGS84) |
|---|---|
| Elevation | 1006 |
| Relative position | 40 MILES EAST OF EVERETT, 3 MI FROM MONTE CRISTO; ABOUT 1.5 MI WAST-NORTHWEST OF SILVER LAKE |
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)
Sauk(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 | 011E | 19 | SE4 OF SW4 | Washington |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Nickel Critical | Primary |
| Cobalt Critical | Secondary |
| Gold | Tertiary |
| Silver | Tertiary |
| Vanadium Critical | Tertiary |
| Uranium | Tertiary |
| Arsenic Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcocite | Ore |
| Chalcopyrite | Ore |
| Chloanthite | Ore |
| Chrysocolla | Ore |
| Cubanite | Ore |
| Erythrite | Ore |
| Garnierite | Ore |
| Gold | Ore |
| Magnetite | Ore |
| Malachite | Ore |
| Niccolite | Ore |
| Pentlandite | Ore |
| Sphalerite | Ore |
| Calcite | Gangue |
| Quartz | Gangue |
| Serpentine | Gangue |
| Result | HUNTTING PROVIDES NUMEROUS ANALYSES. METALLURGICAL SAMPLES CONTAINED 2.7% CU, 1% NI, 0.05% CO, 8.9% FE, 0.9% AS, 3.9% S, 30.6% SIO2, 0.2% CAO, 0.11 OZ/TON AU, 0.3 OZ/TON AG |
|---|
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Arkose |
| Rock unit name | Eastern Melange Belt;Swauk Formation |
| Rock description | Eastern Melange Belt;Swauk Formation |
| (1) | -121.44315, 47.9812 |
|---|
| General form | LENSES, DISSEMINATED |
|---|---|
| Strike | N35W} |
| Dip | 80NE} |
| Length | 27.43M |
| Width | 9.14M |
| General form | LENSES, DISSEMINATED |
|---|---|
| Dip | 80NE} |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Medium |
| Significant | No |
| Discovery year | 1900 |
| District name | Monte Cristo District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | In Mount Baker National Forest |
| Type | Operator |
|---|---|
| Owner | Utility Mining Co. |
| First year | 1944 |
| Type | Owner |
|---|---|
| Owner | Mackinaw Metals Co. |
| First year | 1956 |
| Type of workings | Surface/Underground |
|---|---|
| Length | 338.63M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W001168 |
COLE, J.W., 1944, MACKINAW METALS MINE, SNOHOMICH COUNTY, WASHINGTON: U.S. BUREAU OF MINES WAR MINERALS REPORT 156, 11 P.
CORNWALL, H.R., 1966, NICKEL DEPOSITS OF NORTH AMERICA: U.S. GEOLOGICAL SURVEY BULLETIN 1223, P. 56-57.
HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 87.
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, SCALE1:100,000.
HUNTTING
UNPUB. COBALT REPORT
| Subject category | Comment text |
|---|---|
| Deposit | MRDS RECORD M025736 HAS BEEN MERGED WITH THIS RECORD AND DELETED |
| Deposit | ORE ZONE (DIMENSIONS ABOVE) PRESENT IN 3,000 X 125 FT FRACTURE. ORE IS IN LENSES AND DISSEMINATED IN SERPENTINE IN A FRACTURE BETWEEN SERPENTINE AND ARKOSE. ORIGIN IS MAGMATIC SEGREGATION WITH LATER HYDROTHERMAL ALTERATION; THE TYPE OF DEPOSIT IS UNKNOWN |
| Deposit | THE OCCURRENCE OF PENTLANDITE WITHOUT ACCOMPANYING PYRRHOTITE IS UNUSUAL, IF NOT UNIQUE, AMONG NICKEL-SULFIDE ORE DEPOSITS. MILTON AND MILTON REPORTED (1958, P. 436) THAT THIS RESULTED FROM EXCEPTIONALLY HIGH NI:FE AND CU:FE RATIOS IN THE MACKINAW ORE-FORMING SOLUTIONS ; INFO.SRC : 1 PUB LIT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JAN-1973 | Coury, Anny B. | U.S. Geological Survey | |
| Updater | 01-JUN-1992 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.