| |
 |
Erionite-Ca Mineral Data
|
|
|
General Erionite-Ca Information
|
 Chemical Formula: |
(Ca,K2,Na2)2[Al4Si14O36]•15(H2O) |
| Composition: |
Molecular Weight = 2,904.81 gm |
| |
Potassium 2.07 % K 2.50 % K2O |
| |
Sodium 0.75 % Na 1.01 % Na2O |
| |
Calcium 3.15 % Ca 4.40 % CaO |
| |
Magnesium 0.72 % Mg 1.19 % MgO |
| |
Aluminum 8.20 % Al 15.50 % Al2O3 |
| |
Silicon 26.01 % Si 55.64 % SiO2 |
| |
Hydrogen 2.18 % H 19.44 % H2O |
| |
Oxygen 56.92 % O |
| |
______ ______ |
| |
100.00 % 99.69 % = TOTAL OXIDE |
| Empirical Formula: |
Ca2.28K1.54Na0.95Mg0.86Al8.83Si26.9O72•31.35(H2O) |
| Environment: |
Occurs in volcanic and sedimentary rocks. Found in amygdules in altered basalt. |
| IMA Status: |
Approved IMA 1967 (Dana # Added) |
| Locality: |
Maze, Niigata Prefecture, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek for wool, in allusion to its white, fibrous, wool-like appearance. The Ca-dominant member of the erionite series. |
| Name Pronunciation: |
Erionite-Ca  |
| |