| |
 |
Pyrophyllite Mineral Data
|
|
|
General Pyrophyllite Information
|
 Chemical Formula: |
Al2Si4O10(OH)2 |
| Composition: |
Molecular Weight = 360.31 gm |
| |
Aluminum 14.98 % Al 28.30 % Al2O3 |
| |
Silicon 31.18 % Si 66.70 % SiO2 |
| |
Hydrogen 0.56 % H 5.00 % H2O |
| |
Oxygen 53.28 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Al2Si4O10(OH)2 |
| Environment: |
Somewhat uncommon, found both in hydrothermal veins and in bedded deposits in schistose metamorphic rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1829 |
| Locality: |
Tres Cerritos, California, USA; Pyschminsk and Beresovsk, Ural Mountains, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek for fie and leaf, in allusion to its tendency to exfoliate into fan shapes when heated. |
| Name Pronunciation: |
Pyrophyllite + Pronunciation  |
| |