| Deposit ID | 10013110 |
|---|---|
| MRDS ID | D009213 |
| Record type | Site |
| Current site name | Jefferyes Group |
| Geographic coordinates: | -105.39447, 39.04111 (WGS84) |
|---|---|
| Elevation | 2530 |
| Relative position | 4.7 MILES N 25 W OF TOWN OF LAKE GEORGE |
Political divisions (FIPS codes)
Park(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Tarryall(quadrangle 1:24,000 scale)
Bailey(quadrangle 1:100,000 scale)
Denver(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
South Platte Headwaters(hydrologic unit)
South Platte(hydrologic accounting unit)
South Platte(hydrologic subregion)
Missouri(hydrologic region)
Federal lands
Pike and San Isabel National Forests(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | Park |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 6th Principal | 012S | 072W | 01 | SE OF SE OF NW | Colorado |
| Commodity | Importance |
|---|---|
| Tungsten Critical | Primary |
| Materials | Type of material |
|---|---|
| Scheelite | Ore |
| Chlorite | Gangue |
| Clinozoisite | Gangue |
| Epidote | Gangue |
| Garnet | Gangue |
| Quartz | Gangue |
| Vesuvianite | Gangue |
| Wollastonite | Gangue |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Quartz Monzonite | ||||||
| |||||||
| Host or associated | Associated |
|---|---|
| Rock type | Plutonic Rock > Pegmatite |
| Rock unit name | Pegmatites Possibly Related To Boulder Creek Granitoid;Silver Plume Quartz Monzonite |
| Rock description | Pegmatites Possibly Related To Boulder Creek Granitoid;Silver Plume Quartz Monzonite |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Gneiss |
| Rock unit name | Biotite Gneiss |
| Rock description | Biotite Gneiss |
| (1) | -105.39447, 39.04111 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Front Range, Tarryall Mountains, Puma Hills |
| Type of structure | Local |
| Structure description | Lake George Ring Dike Complex, Nw-Trending Faults |
| General form | LENSOID, TABULAR, PODS |
|---|---|
| Strike | NE |
| Dip | NEARLY VERTICAL |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Tarryall Springs District (Puma City) |
|---|
| Ownership category | National Forest |
|---|
| Type | Owner |
|---|---|
| Owner | Lynn Jefferyes |
| First year | 1956 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D009213 |
BELSER, CARL, 1956, TUNGSTEN POTENTIAL IN CHAFFEE, FREMONT; GUNNISON, LAKE, LARIMER, PARK, AND SUMMIT COUNTIES, COLORADO: USBM INFORMATION CIRCULAR 7748, P. 19-26
BRYANT, BRUCE, MCGREW, L.W. AND WOBUS, R.A., 1981, GEOLOGIC MAP OF THE DENVER 1 DEGREE X 2 DEGREES QUADRANGLE, NORTH-CENTRAL COLORADO: USGS MAP I-1163, 1:250,000
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1982 | Collins, Donna B. | 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.