| Deposit ID | 10098750 |
|---|---|
| MRDS ID | MX00559 |
| Record type | Site |
| Current site name | Democrata |
| Alternate or previous names | West Cobre Grande, Kirk |
| Related records | 10132972 |
| Geographic coordinates: | -110.32566, 30.97932 (WGS84) |
|---|
Political divisions (FIPS codes)
Pima(county)
Arizona(state)
United States(country)
North America(continent)
Land(continent)
| Country | State |
|---|---|
| Mexico | Sonora |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Zinc Critical | Secondary |
| Materials | Type of material |
|---|---|
| Bornite | Ore |
| Chalcocite | Ore |
| Chalcopyrite | Ore |
| Sphalerite | Ore |
| Garnet | Gangue |
| Quartz | Gangue |
| Model code | 58 |
|---|---|
| USGS model code | 18a |
| Deposit model name | Porphyry Cu, skarn-related |
| Mark3 model number | 9 |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Rock unit name | Mesa Volcanics |
| Rock description | Mesa Volcanics |
| (1) | -110.32566, 30.97932 |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Cananea |
|---|
| Type of workings | Underground |
|---|---|
| Overall depth | 213.36M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | MX00559 |
EMMONS, S.F., 1910, CANANEA MINING DISTRICT OF SONORA, MEXICO: ECONOMIC GEOLOGY, V. 5, P. 312-356.
EINAUDI, M.T., 1982, DESCRIPTION OF SKARNS ASSOCIATED WITH PORPHYRY COPPER PLUTONS; SOUTHWESTERN NORTH AMERICA IN TITLEY, S.R., (ED.), ADVANCES IN GEOLOGY OF THE PORPHYRY COPPER DEPOSITS; SOUTHWESTERN NORTH AMERICA: TUCSON, ARIZONA, UNIVERSITY OF ARIZONA PRESS, P. 171-175.
MEINERT, 1982.
| Subject category | Comment text |
|---|---|
| Deposit | BORNITE- AND SPHALERITE-BEARING SKARN THAT HAS BEEN BRECCIATED AND CEMENTED BY QUARTZ-PYRITE-CHALCOPYRITE ASSEMBLAGE. ABUNDANT SECONDARY CHALCOCITE. CHALCOCITE CONTENT DECREASES WITH DEPTH, SPHALERITE CONTENT INCREASES. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1988 | Leonard, Kenneth R. (Page, Norman J.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.