| Deposit ID | 10056416 |
|---|---|
| MRDS ID | TC00088 |
| Record type | Site |
| Current site name | O'Toole Deposit |
| Alternate or previous names | Forteleza De Minas, O'Tolle Nickel Deposit |
| Geographic coordinates: | -46.67928, -20.89387 (WGS84) |
|---|---|
| Location accuracy | 10000(meters) |
| Relative position | ABOUT 350 KM NW OF RIO DE JANEIRO |
Political divisions (FIPS codes)
Minas Gerais(province)
Brazil(country)
South America(continent)
Land(continent)
| Country | State |
|---|---|
| Brazil | Minas Gerais |
| Commodity | Importance |
|---|---|
| Nickel Critical | Primary |
| Copper | Primary |
| PGE Critical | Secondary |
| Gold | Secondary |
| Cobalt Critical | Secondary |
| Sulfur | Secondary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Cobaltite | Ore |
| Gold | Ore |
| Marcasite | Ore |
| Niccolite | Ore |
| Pentlandite | Ore |
| Pyrrhotite | Ore |
| Silver | Ore |
| Sperrylite | Ore |
| Sphalerite | Ore |
| Hematite | Gangue |
| Ilmenite | Gangue |
| Magnetite | Gangue |
| Serpentine | Gangue |
| Tremolite | Gangue |
| Result | PYRRHOTITE: PENTLANDITE: CHALCOPYRITE IS 65:30:5. MUCH ANALYTICAL DATA GIVEN IN BRENNER AND OTHERS (1990) AND FOR PGE MINERALS IN MARCHETTO (1990). |
|---|
| Model code | 11 |
|---|---|
| USGS model code | 6a |
| Deposit model name | Komatiitic Ni-Cu |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Serpentinite |
| Rock unit name | Moro Do Niquel Unit |
| Rock description | Moro Do Niquel Unit |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Komatiite (Ultramafite) |
| (1) | -46.67928, -20.89387 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | The Ore Body Is Located In The Basal Portion Of An Archean Greenstone Belt Sequence. |
| Type of structure | Local |
| Structure description | Assymetric Isoclinal F2 Syncline Plunging 45-30w |
| General form | TABULAR |
|---|---|
| Strike | N40W |
| Dip | SEMIVERTICAL |
| Plunge | 45NW |
| Thickness | 11M |
| Length | 1700M |
| Depth to bottom | 500M |
| Development status | Prospect |
|---|---|
| Commodity type | Both |
| Deposit size | Medium |
| Significant | No |
| Discovery year | 1983 |
| Discoverer | B.P. Mineracao Ltd. |
| Type | In-situ | ||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1988 | ||||||||||||||||||||||||||||||||||||||||||
| Total resources | 2000mt ore | ||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||
| Type | In-situ | |||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1990 | |||||||||||||||||||||||||||||||||||
| Total resources | 6600000mt ore | |||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | TC00088 |
ENGINEERING AND MINING JOURNAL, 1988, THIS MONTH IN MINING, CORRECTION: ENGINEERING AND MINING JOURNAL, V. 189, P. 17.
AMERICAN CONSULATE, RIO DE JANEIRO
E&MJ, 1988.
AMERICAN CONSUL, RIO DE JANEIRO; BRENNER AND OTHERS (1990)
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-FEB-90 | Bolm, Karen S. | U.S. Geological Survey | |
| Updater | 01-DEC-93 | Page, Norman J. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.