| Deposit ID | 10068744 |
|---|---|
| MRDS ID | W001985 |
| Record type | Site |
| Current site name | Comquimbo Mn Mines |
| Geographic coordinates: | -70.99953, -29.99745 (WGS84) |
|---|---|
| Elevation | 1000 |
| Relative position | ABOUT 35 KM NE., E., & SE. OF LA SERENA |
Political divisions (FIPS codes)
Chile(country)
South America(continent)
Land(continent)
| Country |
|---|
| Chile |
| Commodity | Importance |
|---|---|
| Manganese Critical | Primary |
| Materials | Type of material |
|---|---|
| Braunite | Ore |
| Hausmanite | Ore |
| Manganite | Ore |
| Psilomelane | Ore |
| Pyrolusite | Ore |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||||
| Rock unit name | Andean Diorite Complex Intrusive | ||||
| Rock description | Andean Diorite Complex Intrusive | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite |
| (1) | -70.99953, -29.99745 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | North-Trending Broad Open Folds, Faults Of Varying Lengths And Displacements, And Plutonic Masses |
| Type of structure | Local |
| Structure description | North-Trending Anticline And Adjacent Synclines To E And W |
| Thickness | 3M |
|---|
| Development status | Producer |
|---|---|
| Commodity type | Metallic |
| Significant | No |
| Year of first production | 1884 |
| District name | See Note In Location Comments. |
|---|
| Year | 1963 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1884 - 1963 | ||||||||||||||
| Material | MN | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Cp_Grade: ^46 % | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W001985 |
RUIZ, F., CARLOS, 1965, GEOLOGIA Y YACIMIENTOS METALIFEROS DE CHILE: INST. INV. GEOL. CHILE, P. 263-280. (SPANISH)
BOWES, W. A., AND OTHERS, 1966, EXPLORACION DE MINERALES RADIACTIVOS EN CHILE, PROV. ATACAMA AND COQUIMBO: CHILE INST. INV. GEOL., BOL. 22, PT. 2, P. 59-70
UNITED NATIONS DEVELOPMENT PROGRAMME, 1967, MINERAL RESOURCES SURVEY OF THE PROVINCE OF COBUIMBO, CHILE: NEW YORK , UNITED NATIONS, P. 74-76
BOWES, W.A., AND OTHERS, 1966, EXPLORACION DE MINERALES RADIOACTIVOSEN CHILE, PROV. ATACAMA AND COQUIMBO: CHILE INSTITUTE OF INVESTIGATION OF GEOLOGY, BOV. 22, PT. 2, P. 59-70.
UNITED NATIONS DEVELOPMENT PROGRAMME, 1967, MINERAL RESOURCES SURVEY OF THE PROVINCE OF COLUMBO, CHILE: NEW YORK, UNITED NATIONS, P. 74-76.
1958 RECON U.S. ATOMIC ENERGY COMM. AND INST. INV. GEOL. CHILE
1963 GEOLMAP INSTITUTO DE INVESTIGACIONES GEOLOGICAS CHILE
1966 GEOLMAP UNITED NATIONS
RUIZ, 1965, REF.
| Subject category | Comment text |
|---|---|
| Deposit | MN OCCURS IN 3 DIFFERENT STRATIGRAPHIC HORIZONS IN THE 2 FMS AND PROBABLY ACCUMULATED DURING 3 HETEROCHRONOUS EPISODES OF SEDIMENTATION REFERRED TO AS LOWER, MIDDLE AND UPPER DEPOSITIONAL CYCLES. DEPOSITION IN LOCAL TROUGHS THAT BECAME SEPARATED AND ISOLATED DETERMINED VARIATION IN THICKNESS OF MINERALIZED BEDS. ABSENCE OF MN-BEARING BEDS IN SAME STRATIGRAPHIC SEQUENCE OF DIFFERENT AREAS PROBABLY IS THE RESULT OF NON-DEPOSITION OR CHANNEL SCOURING |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1973 | Davidson, Claire B. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.