General Brockite Information
|
 Chemical Formula: |
(Ca,Th,Ce)(PO4)•(H2O) |
| Composition: |
Molecular Weight = 220.66 gm |
| |
Calcium 10.90 % Ca 15.25 % CaO |
| |
Cerium 6.35 % Ce 7.44 % Ce2O3 |
| |
Thorium 31.55 % Th 35.90 % ThO2 |
| |
Phosphorus 14.04 % P 32.16 % P2O5 |
| |
Hydrogen 0.91 % H 8.16 % H2O |
| |
Oxygen 36.25 % O |
| |
______ ______ |
| |
100.00 % 98.91 % = TOTAL OXIDE |
| Empirical Formula: |
Ca0.6Th0.3Ce0.1(PO4)•(H2O) |
| Environment: |
A rare accessory mineral in granite and granite pegmatites. |
| IMA Status: |
Approved IMA 1962 |
| Locality: |
In the USA, in a prospect pit about one km east of the Bassick mine, Querida, Wet Mountains, and at the Hardwick mine and Nightingale shaft, Custer Co., Colorado. Link to MinDat.org Location Data. |
| Name Origin: |
To honor Maurice R. Brock, U.S. Geological Survey, who supplied the first specimen. |
| Name Pronunciation: |
Brockite  |
| Synonym: |
Silicosmirnovskite |
| |
Smirnovskite |
| |
