| Deposit ID | 10013726 |
|---|---|
| MRDS ID | D010182 |
| Record type | Site |
| Current site name | Wasson Pegmatite |
| Alternate or previous names | Rainbow Hills Pegmatite, Wasson Ranch Pegmatite |
| Related records | 10239258 |
| Geographic coordinates: | -105.31475, 39.70332 (WGS84) |
|---|---|
| Elevation | 2292 |
| Location accuracy | 500(meters) |
| Relative position | 5.5 MILES S 43 W FROM GOLDEN |
Political divisions (FIPS codes)
Jefferson(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Evergreen(quadrangle 1:24,000 scale)
Denver West(quadrangle 1:100,000 scale)
Denver(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper South Platte(hydrologic unit)
South Platte(hydrologic accounting unit)
South Platte(hydrologic subregion)
Missouri(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Colorado | Jefferson |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 6th Principal | 004S | 071W | 15 | SE OF NE | Colorado |
| Commodity | Importance |
|---|---|
| Feldspar | Primary |
| Beryllium Critical | Primary |
| Mica | Primary |
| Niobium (Columbium) Critical | Secondary |
| Tantalum Critical | Secondary |
| REE Critical | Secondary |
| Thorium | Tertiary |
| Materials | Type of material |
|---|---|
| Beryl | Ore |
| Columbite | Ore |
| Euxenite | Ore |
| Microcline | Ore |
| Muscovite | Ore |
| Tantalite | Ore |
| Biotite | Gangue |
| Garnet | Gangue |
| Thorite | Gangue |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Pegmatite | ||||||||
| Rock unit name | Pegmatite | ||||||||
| Rock description | Pegmatite | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Gneiss |
| Rock unit name | Idaho Springs Formation---Feldspar-Rich Gneiss |
| Rock description | Idaho Springs Formation---Feldspar-Rich Gneiss |
| (1) | -105.31475, 39.70332 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Front Range Uplift, Denver Basin |
| Type of structure | Local |
| Structure description | Floyd Hill Fault Zone, Unnamed Anticline |
| General form | TABULAR |
|---|---|
| Thickness | 15.24M |
| Length | 198.12M |
| Development status | Past Producer |
|---|---|
| Commodity type | Both |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1944 |
| Year of last production | 1956 |
| District name | Clear Creek Pegmatite Province |
|---|
| Ownership category | Private |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010182 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0080590202 |
SHERIDAN, D.M., AND OTHERS, 1972, GEOLOGIC MAP OF THE EVERGREEN QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS MAP I-786-A.
MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 29.
USBM MIN. EXAM. FILE, REPT. OF 6/1/59 (FROM ORIGINAL CRIB RECORD)
ORIGINAL CRIB RECORD (PROBABLY USBM REFERENCE)
| Subject category | Comment text |
|---|---|
| Deposit | ZONED PEGMATITE TRENDS NW, DIPS 70 TO 80 SW PINCHING OUT BOTH TO NW AND TO SE. WALL ZONE CONTAINS AMETHYST QUARTZ, MICROCLINE, AND SOME PLAGIOCLASE; CORE IS QUARTZ-MICROCLINE. BE OCCURS IN POCKETS IN MAIN DIKE AND IN SMALL BRANCH DIKE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-FEB-1983 | Schwochow, Stephen D. | Colorado Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
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