| Deposit ID | 10023262 |
|---|---|
| MRDS ID | I000060 |
| Record type | Site |
| Current site name | Mount Weld |
| Geographic coordinates: | 122.5453, -28.86008 (WGS84) |
|---|---|
| Relative position | 34 KM SOUTHEAST OF LAVERTON. |
Political divisions (FIPS codes)
Western Australia(province)
Australia(country)
Australia(continent)
Land(continent)
| Country | State |
|---|---|
| Australia | Western Australia |
| Commodity | Importance |
|---|---|
| Phosphorus-Phosphates | Primary |
| Niobium (Columbium) Critical | Primary |
| Tantalum Critical | Primary |
| REE Critical | Secondary |
| Zirconium Critical | Secondary |
| Materials | Type of material |
|---|---|
| Monazite | Ore |
| Result | MONAZITE HAS LOW THORIUM LEVELS, LESS THAN 0.3% THORIUM OXIDE. |
|---|
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Metamorphic Rock > Metasedimentary Rock | ||
| |||
| Host or associated | Associated |
|---|---|
| Rock type | Metamorphic Rock > Metavolcanic Rock |
| Host or associated | Associated |
|---|---|
| Rock type | Metamorphic Rock > Serpentinite |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Carbonatite, Intrusive |
| (1) | 122.5453, -28.86008 |
|---|
| Development status | Prospect |
|---|---|
| Commodity type | Both |
| Significant | No |
| Discovery year | 1966 |
| Type | Owner |
|---|---|
| Owner | Carr-Boyd Minerals Ltd. (62%) |
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1989 | ||||||||||||||
| Measured | 6310000000mt ore | ||||||||||||||
| Total resources | 250000000000mt ore | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1990 | ||||||||||||||
| Total resources | 1600000000mt ore | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1991 | ||||||||||||||
| Total resources | 13000000mt ore | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1988 | ||||||||||||||||||||||||||||
| Inferred | 6100000000mt ore | ||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | I000060 |
ROBJOHNS, NICOLA, 1990, RARE EARTHS, IN SPECIALTY METALS: METALS & MINERALS ANNUAL REVIEW - 1990, P. 78-80.
INDUSTRIAL MINERALS, 1990, WORLD OF MINERALS: NO. 272, P. 8.
STEWART, G.N., 1990, AUSTRALIA, IN PACIFIC AND AUSTRALASIA: MINING ANNUAL REVIEW 1990, P. 80.
MINING JOURNAL, 1989, INDUSTRY IN ACTION: V. 313, NO. 8031, P. 84.
INDUSTRIAL MINERALS, 1989, WORLD OF MINERALS: NO. 257, P. 10-11.
INDUSTRIAL MINERALS, 1988, WORLD OF MINERALS: NO. 253, P. 8-9.
INDUSTRIAL MINERALS, 1988, WORLD OF MINERALS: NO. 252, P. 16.
INDUSTRIAL MINERALS, 1991, WORLD OF MINERALS: NO. 286, P. 8.
DUNCAN, R.K., AND WILLET, G.D., 1990, MOUNT WELD CARBONATITE, IN HUGHES, F.E., ED., GEOLOGY OF THE MINERAL DEPOSITS OF AUSTRALIA AND PAPUA NEW GUINEA, VOLUME 1: AUSTRALASIAN INSTITUTE OF MINING AND METALLURGY MONOGRAPH 14, P. 591-597.
ROBJOHNS, 1990, FOR FIRST TWO FIGURES; INDUSTRIAL MINERALS, 1990, FOR THIRD AND FOURTH FIGURES; FIFTH FIGURE FROM STEWART, 1990. 1988 RESERVE FIGURES ARE FROM INDUSTRIAL MINERALS (1988, 1989) AND INDICATED RESERVES POSTDATE INFERRED RESOURCES; DUNCAN AND WILLET, 1990;
| Subject category | Comment text |
|---|---|
| Deposit | RESOURCE ESTIMATIONS ARE RESTRICTED TO THE WEATHERED ROCK HORIZON. OVERBURDEN IS IN THE 40-50 M RANGE. DEPOSIT APPEARS TO HAVE BEEN FORMED BY SUPERGENE PROCESSES IN THE REGOLITH OF A CARBONATITE OR VOLCANIC PIPE THAT IS 4 KM IN DIAMETER. THE CENTRAL LANTHANIDE DEPOSIT COVERS AN AREA OF 1 SQ KM OF THE CARBONATITE REGOLITH AND VARIES SYSTEMATICALLY IN GRADE AND THICKNESS AND COMPRISES A SUITE OF PHOSPHATIC RARE EARTH-BEARING MINERALS. THE MINERALIZATION OCCURS FROM 30 TO 75 M DEPTH WITH SOME THICKER SECTIONS EXTENDING TO A DEPTH OF 100 M. DEPOSIT ALSO HAS SIGNIFICANT AMOUNTS OF SAMARIUM, EUROPIUM, NEODYMIUM, AND ERBIUM. THE WEATHERED CAP (A LATERITIC REGOLITH UP TO 90 M THICK, LCRET-ETERT IN AGE) OF THE CARBONATITE ALSO HAS A CONSIDERABLE PHOSPHATE RESOURCE WHICH IS SPATIALLY SEPARATE FROM THE RARE EARTHS. |
| Deposit | ADDITIONAL GEOLOGIC INFORMATION IS AVAILABLE IN DUNCAN AND WILLETT, 1990. ; INFO.SRC : 1 PUB LIT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-SEP-1990 | Orris, Greta J. | U.S. Geological Survey | }CORRECTED LATITUDE AND LONGITUDE |
| Updater | 01-APR-1994 | Orris, Greta J. | U.S. Geological Survey | |
| Updater | 01-MAY-1994 | Preston, W. | Western Australia Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.