General Heulandite-Sr Information
|
 Chemical Formula: |
(Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36•12(H2O) |
| Composition: |
Molecular Weight = 2,880.96 gm |
| |
Potassium 0.30 % K 0.36 % K2O |
| |
Barium 0.67 % Ba 0.75 % BaO |
| |
Sodium 0.32 % Na 0.43 % Na2O |
| |
Strontium 6.39 % Sr 7.55 % SrO |
| |
Calcium 2.45 % Ca 3.43 % CaO |
| |
Magnesium 0.02 % Mg 0.03 % MgO |
| |
Aluminum 8.61 % Al 16.26 % Al2O3 |
| |
Silicon 26.26 % Si 56.19 % SiO2 |
| |
Hydrogen 1.68 % H 15.01 % H2O |
| |
Oxygen 53.31 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Sr2.1Ca1.76Ba0.14Mg0.02Na0.4K0.22Al9.19Si26.94O72�24(H2O) |
| Environment: |
Low temperature zeolite found in a wide variety of geologic environments: volcanic rocks, metamorphic rocks, pegmatites, tuffs, and deep-sea sediments. |
| IMA Status: |
Approved IMA 1982 (Dana # Added) |
| Locality: |
Campegli, eastern Ligurian ophiolites, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the English mineral collector, John Henry Heuland (1778-1856), a British mineral collector and dealer. The Sr-dominant member of the heulandite series. |
| Name Pronunciation: |
Heulandite-Sr + Pronunciation  |
| Synonym: |
Beaumontite |
| |
Lamellar zeolite |
| |
