| Deposit ID | 10087417 |
|---|---|
| MRDS ID | D006730 |
| Record type | Site |
| Current site name | Upper Star of the West Mine |
| Alternate or previous names | Iron Mine |
| Geographic coordinates: | -105.26889, 37.61335 (WGS84) |
|---|---|
| Elevation | 3191 |
| Relative position | 4.15 MILES N13E OF RUSSELL |
Political divisions (FIPS codes)
Costilla(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Russell(quadrangle 1:24,000 scale)
Blanca Peak(quadrangle 1:100,000 scale)
Trinidad(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Alamosa-Trinchera(hydrologic unit)
Rio Grande Headwaters(hydrologic accounting unit)
Rio Grande Headwaters(hydrologic subregion)
Rio Grande(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Colorado | Costilla |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 6th Principal | 028S | 070W | 18 | NW OF SW | Colorado |
| Commodity | Importance |
|---|---|
| Iron | Primary |
| Gold | Tertiary |
| Silver | Tertiary |
| Materials | Type of material |
|---|---|
| Hematite | Ore |
| Magnetite | Ore |
| Result | AVERAGE OF FOUR ANALYSES ON ENTIRE IRON DEPOSIT YIELDED 53.78 % FE AND 0.931 % P. SAMPLE ACROSS IRON BED ASSAYED $3.20/TON AU AND $0.25/TON AG USBM ANALYSIS DATED 8/14/57 YIELDED 57.60 % FE, 0.03 % P, 0.38 % S, 8.0 % SIO2, 0.20 % MN |
|---|
| Model code | 62 |
|---|---|
| USGS model code | 18d |
| Deposit model name | Skarn Fe |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Monzonite | ||||||||
| Rock unit name | Monzonite Porphyry | ||||||||
| Rock description | Monzonite Porphyry | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Rock unit name | Minturn Formation |
| Rock description | Minturn Formation |
| (1) | -105.26889, 37.61335 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Sierra Blanca Massif, Ft. Garland Embayment |
| Type of structure | Local |
| Structure description | Vega Cr. Anticline, Wagon Mesa Fault |
| General form | TABULAR |
|---|---|
| Dip | BEDS 45 SE |
| Thickness | 1.22M |
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1881 |
| Year of last production | 1883 |
| District name | Grayback (Russell) District |
|---|
| Ownership category | Private |
|---|
| Type | Owner |
|---|---|
| Owner | Trinchera (Estate) ; Winfield Ripley |
| First year | 1910 |
| Type of workings | Underground |
|---|---|
| Length | 76.2M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D006730 |
WARNER, L.A., AND OTHERS, 1959, OCCURRENCES OF NONPEGMATITIC BERYLLIUM IN THE UNITED STATES: USGS PROF. PAPER 318, P. 165.
HARRER, C.M., AND TESCH, W.J., JR., 1959, RECONNAISSANCE OF IRON OCCURRENCES IN COLORADO: USBM IC-7918, P. 22.
| Subject category | Comment text |
|---|---|
| Deposit | IRON ORE REPLACES CALCITE IN CONTACT-METAMORPHOSED LIMESTONE ALONG SOUTHWEST EDGE OF INTRUSION. IRON ORE AND LIMESTONE OBSERVED IN SHARP NEAR-VERTICAL CONTACT WITH PORPHYRY. ORE BED UNDERLAIN BY BROWN CRYSTALLINE LIMESTONE AND OVERLAIN BY 10-FT-THICK ZONE OF SILICIFIED LIMESTONE AND SHALE PARTIALLY REPLACED BY EPIDOTE, ANDRADITE GARNET, CHLORITE, ACTINOLITE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1981 | Schwochow, Stephen D. | Colorado Geological Survey | |
| Updater | 01-MAY-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.