| Deposit ID | 10013856 |
|---|---|
| MRDS ID | D010385 |
| Record type | Site |
| Current site name | Crystal Silica Mine |
| Alternate or previous names | Claim: Crystal Silica Placer |
| Related records | 10191008 |
| Geographic coordinates: | -105.43615, 40.5347 (WGS84) |
|---|---|
| Elevation | 2981 |
| Relative position | 12.2 MILES N 18 E FROM ESTES PARK |
Political divisions (FIPS codes)
Larimer(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Crystal Mountain(quadrangle 1:24,000 scale)
Fort Collins(quadrangle 1:100,000 scale)
Greeley(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Big Thompson(hydrologic unit)
South Platte(hydrologic accounting unit)
South Platte(hydrologic subregion)
Missouri(hydrologic region)
Federal lands
Arapaho and Roosevelt National Forests(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | Larimer |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 6th Principal | 007N | 071W | 26 | SW | Colorado |
| Commodity | Importance |
|---|---|
| Mica | Primary |
| Beryllium Critical | Tertiary |
| Niobium (Columbium) Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Beryl | Ore |
| Muscovite | Ore |
| Albite | Gangue |
| Apatite | Gangue |
| Columbite | Gangue |
| Garnet | Gangue |
| Microcline | Gangue |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Tonalite | ||||
| |||||
| Host or associated | Associated |
|---|---|
| Rock type | Plutonic Rock > Pegmatite |
| Rock unit name | Pegmatite;Tonalite (Quartz Diorite) |
| Rock description | Pegmatite;Tonalite (Quartz Diorite) |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist > Mica Schist |
| Rock unit name | Metasedimentary Rocks-Mica Schist;Pegmatite |
| Rock description | Metasedimentary Rocks-Mica Schist;Pegmatite |
| (1) | -105.43615, 40.5347 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Front Range Uplift |
| Type of structure | Local |
| Structure description | Thompson Canyon Fault, Mt Olympus Batholith, Ne-Trending Folds |
| General form | IRREGULAR |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Both |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1900 |
| Year of first production | 1900 |
| District name | Crystal Mountain (Storm Mountain) Pegmatite District |
|---|
| Ownership category | Private |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010385 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0080690052 |
THURSTON, W.R., 1955, PEGMATITES OF THE CRYSTAL MOUNTAIN DISTRICT, LARIMER COUNTY, COLORADO: USGS BULL. 1011, 185 P., 13 PLS.
| Subject category | Comment text |
|---|---|
| Deposit | ZONED PEGMATITE CONSISTS OF 1) WALL ZONE OF FINE-GRAINED QUARTZ-MICROCLINE-MUSCOVITE-PLAGIOCLASE PEGMATITE, 2) INTERMEDIATE ZONE OF DISCONTINUOUS MUSCOVITE-BERYL PEGMATITE WITH ACCESSORY ALBITE, MICROCLINE, QUARTZ, APATITE, AND COLUMBITE, 3) UNIT OF MICROCLINE-QUARTZ-MICA PEGMATITE, AND 4) MASSIVE QUARTZ PEGMATITE CORE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1983 | Schwochow, Stephen D. | Colorado Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.