| |
 |
Gillespite Mineral Data
|
|
|
General Gillespite Information
|
 Chemical Formula: |
BaFe++Si4O10 |
| Composition: |
Molecular Weight = 465.51 gm |
| |
Barium 29.50 % Ba 32.94 % BaO |
| |
Iron 12.00 % Fe 15.43 % FeO |
| |
Silicon 24.13 % Si 51.63 % SiO2 |
| |
Oxygen 34.37 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
BaFe2+Si4O10 |
| Environment: |
In a glacial moraine (Dry Delta, Alaska, USA); probably from a contact metamorphic zone (Trumbull Peak, California, USA). |
| IMA Status: |
Valid Species (Pre-IMA) 1922 |
| Locality: |
Dry Delta, Alaska Range, Alaska, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Frank Gillespie, of Richardson, Alaska, USA, who discovered the first specimen. |
| Name Pronunciation: |
Gillespite + Pronunciation  |
| |