| Deposit ID | 10013736 |
|---|---|
| MRDS ID | D010194 |
| Record type | Site |
| Current site name | Ladwig-Grosso Pegmatite |
| Related records | 10166782 |
| Geographic coordinates: | -105.27114, 39.79638 (WGS84) |
|---|---|
| Elevation | 2697 |
| Location accuracy | 500(meters) |
| Relative position | 8 MILES N 71 W FROM GOLDEN |
Political divisions (FIPS codes)
Jefferson(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Ralston Buttes(quadrangle 1:24,000 scale)
Denver West(quadrangle 1:100,000 scale)
Denver(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Clear(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 | 003S | 071W | 18 | NE OF NE | Colorado |
| Commodity | Importance |
|---|---|
| Mica | Primary |
| Beryllium Critical | Primary |
| Feldspar | Tertiary |
| Quartz | Tertiary |
| Materials | Type of material |
|---|---|
| Beryl | Ore |
| Muscovite | Ore |
| Quartz | Ore |
| 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---Plagioclase-Quartz-Biotite Gneiss And Plagioclase-Hornblende Gneiss, And Amphibolite;Pegmatite |
| Rock description | Idaho Springs Formation---Plagioclase-Quartz-Biotite Gneiss And Plagioclase-Hornblende Gneiss, And Amphibolite;Pegmatite |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Amphibolite |
| (1) | Biotitic gneiss, schist, and migmatite |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Front Range Uplift, Denver Basin |
| Type of structure | Local |
| Structure description | Junction Ranch Fault Zone |
| General form | TABULAR |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Both |
| Deposit size | Small |
| Significant | No |
| District name | Clear Creek Pegmatite Province |
|---|
| Ownership category | Private |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010194 |
MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 28
USBM MIN. EXAM. FILE, REPT. OF 1/26/59 (FROM ORIGINAL CRIB RECORD)
| Subject category | Comment text |
|---|---|
| Deposit | POORLY ZONED PEGMATITE PROBABLY TRENDS SUBPARALLEL TO ENE FOLIATION OF BIOTITE GNEISS, HORNBLENDE GNEISS, AND AMPHIBOLITE |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-FEB-83 | Schwochow, Stephen D. | Colorado Geological Survey | |
| Updater | 01-MAY-93 | Spanski, Gregory T. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
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