| Deposit ID | 10047974 |
|---|---|
| MRDS ID | M700347 |
| Record type | Site |
| Current site name | Twin Sisters Mtns |
| Related records | 10229059 |
| Geographic coordinates: | -121.89957, 48.63981 (WGS84) |
|---|---|
| Elevation | 1219 |
| Location accuracy | 500(meters) |
| Relative position | 4.6 MILES WEST OF DOCK BUTTE. |
Political divisions (FIPS codes)
Skagit(county)
Washington(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Twin Sisters Mountain(quadrangle 1:24,000 scale)
Mount Baker(quadrangle 1:100,000 scale)
Concrete(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Nooksack(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 | Skagit |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Willamette | 036N | 007E | 03,04 | Washington |
| Commodity | Importance |
|---|---|
| Chromium Critical | Primary |
| Materials | Type of material |
|---|---|
| Chromite | Ore |
| Dunite | Gangue |
| Olivine | Gangue |
| Model code | 15 |
|---|---|
| USGS model code | 8a |
| Deposit model name | Podiform chromite (minor) |
| Mark3 model number | none |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite |
| (1) | -121.89957, 48.63981 |
|---|
| General form | PODS, BANDS, MASSIVE, DISSEMINATED |
|---|
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Hamilton District |
|---|
| Ownership category | National Forest |
|---|
| Type | Owner |
|---|---|
| Owner | Twin Sisters Magnesium And Chrome Corp., Seattle, Wash. |
| First year | 1955 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M700347 |
HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS, PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 40.
WASHINGTON DIVISION OF MINES AND GEOLOGY INFORMATION CIRCULAR 24, P. 16
WASHINGTON DIVISION OF MINES AND GEOLOGY INFORMATION CIRCULAR 27, P. 18.
| Subject category | Comment text |
|---|---|
| Deposit | DEVELOPMENT IN 1955, 1957. ; INFO.SRC : 1 PUB LIT |
| Deposit | MRDS RECORD US53003 HAS BEEN MERGED WITH THIS RECORD AND DELETED |
| Deposit | CHROMITE APPEARS AS SMALL PODS, BANDS, AND DISSEMINATED GRAINS IN DUNITE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JUL-1982 | Lawson, William A. (Evarts, Russell C.) | U.S. Geological Survey | |
| Editor | 07-JUN-1995 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.