| Deposit ID | 10013714 |
|---|---|
| MRDS ID | D010154 |
| Record type | Site |
| Current site name | Aubrey-Ladwig Mine |
| Alternate or previous names | Aubrey Ladwig Lease, Gary Mine |
| Related records | 10142555 |
| Geographic coordinates: | -105.27336, 39.78666 (WGS84) |
|---|---|
| Elevation | 2240 |
| Relative position | 3.2 MILES N 50 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 | 070W | 18 | SW OF SW | Colorado |
| Commodity | Importance |
|---|---|
| Uranium | Primary |
| Copper | Tertiary |
| Materials | Type of material |
|---|---|
| Pitchblende | Ore |
| Fluorite | Gangue |
| Pyrite | Gangue |
| Result | ORE TONNAGES FROM 1955-56 CONTAINED 0.23 TO 0.31% U3O8 |
|---|
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Pegmatite | ||||||
| Rock unit name | Granitic Pegmatite | ||||||
| Rock description | Granitic Pegmatite | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Gneiss |
| Rock unit name | Idaho Springs Formation-Hornblende Gneiss Unit;Granitic Pegmatite |
| Rock description | Idaho Springs Formation-Hornblende Gneiss Unit;Granitic Pegmatite |
| (1) | -105.27336, 39.78666 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Front Range Uplift, Denver Basin |
| Type of structure | Local |
| Structure description | Hurricane Hill Fault System |
| General form | LENTICULAR, IRREGULAR |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1954 |
| Discoverer | G.B. Friden |
| Year of first production | 1955 |
| Year of last production | 1956 |
| District name | Ralston Buttes District |
|---|
| Ownership category | Private |
|---|
| Year | 1955 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^0.31% U3o8 | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010154 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0080590020 |
SIMS, P.K., AND SHERIDAN, D.M., 1964, GEOLOGY OF URANIUM DEPOSITS IN THE FRONT RANGE, COLORADO: USGS BULL. 1159, P. 93.
SHERIDAN AND OTHERS, 1967, P. 75
| Subject category | Comment text |
|---|---|
| Deposit | DEPOSIT LIES IN PEGMATITE THAT DISCORDANTLY CUTS GNEISS ALONG TRANSITION BETWEEN MICA SCHIST AND LAYERED CALC-SILICATE GNEISS OF THE HORNBLENDE GNEISS UNIT. DEPOSIT IS DIFFERENT THAN OTHERS IN DISTRICT IN THAT MINERALIZATION IS NOT ON MAJOR BRECCIA REEF OR BRANCH; WORKINGS DEVELOPED IN NW- AND NE-STRIKING COMPLEX OF SHORT FRACTURES AND SMALL-DISPLACEMENT FAULTS. ORE OCCURS AS FILLINGS AND COATINGS ALONG AND NEAR FRACTURED AND COARSELY BRECCIATED CONTACTS AND AS PODS AND LENSES IN MINERALIZED BRECCIA IN GNEISS. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JAN-1983 | Banke, Carl M. | 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.