| Deposit ID | 10068857 |
|---|---|
| MRDS ID | W002126 |
| Record type | Site |
| Current site name | Raposos Gold Mine |
| Alternate or previous names | Mina Grande, Raposos, Lodes Espirito Santo, Mina Grande, Espirito West |
| Geographic coordinates: | -43.80978, -19.96388 (WGS84) |
|---|---|
| Location accuracy | 500(meters) |
Political divisions (FIPS codes)
Minas Gerais(province)
Brazil(country)
South America(continent)
Land(continent)
| Country | State |
|---|---|
| Brazil | Minas Gerais |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Palladium Critical | Primary |
| Silver | Primary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Gold | Ore |
| Hematite | Ore |
| Magnetite | Ore |
| Martite | Ore |
| Pyrrhotite | Ore |
| Quartz | Gangue |
| Siderite | Gangue |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Sedimentary Rock > Chemical Sediment > Iron Formation | ||||
| Rock unit name | Rio Das Velhas Super Group | ||||
| Rock description | Rio Das Velhas Super Group | ||||
| |||||
| (1) | -43.80978, -19.96388 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Eastward Plunging, Asymmetric Folds |
| Type of structure | Local |
| Structure description | Asymmetric And Isoclinal Folds |
| General form | VEIN, IRREGULAR BEDS |
|---|---|
| Thickness | 30M |
| Development status | Producer |
|---|---|
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1750 |
| Type | Owner |
|---|---|
| Owner | St. John Del-Rey Mining Co. , Mineracao Morro Velho, S. A. |
| First year | 1910 |
| Year | 1972 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | AU | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^6 G/Ton | ||||||||||||||
| |||||||||||||||
| Year | 1980 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | AU | ||||||||||||||
| Description | Ap_Grade: ^11.38 G/T Au | ||||||||||||||
| |||||||||||||||
| Year | 1991 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | AU | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^5.68 G/T Au | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1984 | ||||||||||||||
| Total resources | 1400000000mt ore | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1955 | ||||||||||||||
| Total resources | 1694080000mt ore | ||||||||||||||
| |||||||||||||||
| Type of workings | Surface/Underground |
|---|---|
| Overall depth | 2454M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W002126 |
RIDGE, J.D., 1972, ANNOTATED BIBLIOGRAPHIES OF MINERAL DEPOSITS IN THE WESTERN HEMISPHERE
TOLBERT, G.E., 1964, GEOLOGY OF THE RAPOSOS GOLD MINE, MINAS GERAIS, BRAZIL-ECONOMIC GEOLOGY VOL 59
LADEIRA, E.A., 1991, GENESIS OF GOLD IN QUADRILATERO FERRIFERO, A REMARKABLE CASE OF PERMANENCY, RECYCLING AND INHERITANCE - A TRIBUTE TO DJALMA GUIMARAES, PIERRE ROUTHIER AND HANS RAMBERG: IN BRAZIL GOLD '91 E.A. LADEIRA, ED., BALKEMA ROTTERDAM, P. 11-30.
CEASAR, P. DE A.B., 1984, PRINCIPIAS DEPOSITOS MINERAIS: CONCEITOS, METODOLOGIA E LISTAGEM IN SCHOBBENHAUS, C., AMEIDA CAMPOS, D., DERZE, G.R., AND ASMUS, H.E., EDS., GEOLOGIA DO BRASIL: BRASILIA, DEPARTAMENTO NACIONAL DA PRODUCAO MINERAL, P. 249-419.
ABREU, A.S., DINIZ, H.B., BUENO DO PRADO, M.G. AND SANTOS, S.P., 1988, A MINA DE OURO DE SAO BENTO, SANTA BARBARA, MINAS GERAIS IN SCHOBBENHAUS BRASIL; V. 3, P. 393-411.
VIEIRA, F.W.R., 1991, TEXTURES AND PROCESSES OF HYDROTHERMAL ALTERATION AND MINERALIZATION IN THE NOVA LIMA GROUP, MINAS GERAIS, BRAZIL, IN BRAZIL GOLD '91, E.A. LADEIRA, ED.: BALKEMA, ROTTERDAM, P. 319-325.
GAIR, J.E., 1962, GEOLOGY AND ORE DEPOSITS OF THE NOVA LIMA AND RIO ACIMA QUADRANGLES, MINAS GERAIS, BRASIL: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-A, 67 P.
1959 GEOLMAP GENE E. TOLBER
WRITTEN COMMUN. FROM A. RANSOME AMERICAN EMBASSY AT RIO DE JANEIRO
CEASAR (1984), GAIR (1962)
| Subject category | Comment text |
|---|---|
| Deposit | THE GOLD SULFIDE ORE PREDOMINATELY REPLACED BANDS OF SIDERITE IN THE QUARTZ-SIDERITE IRON FORMATION, BUT LESS AMOUNTS OF GOLD ARE FOUND IN THE MAGNETITE-QUARTZ IRON AND PYRITE IRON FORMATIONS BECAUSE THEY ARE FAR LESS WELL MINERALIZED. |
| Deposit | Discovery Year: EIGHTEENTH CENTURY |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1974 | Warfle, Thomas M. | U.S. Geological Survey | |
| Updater | 01-SEP-1993 | Page, Norman J. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.