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Minamiite Mineral Data
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General Minamiite Information
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 Chemical Formula: |
(Na,Ca,K)Al3(SO4)2(OH)6 |
| Composition: |
Molecular Weight = 404.84 gm |
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Potassium 0.97 % K 1.16 % K2O |
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Sodium 3.41 % Na 4.59 % Na2O |
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Calcium 2.97 % Ca 4.16 % CaO |
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Aluminum 19.99 % Al 37.78 % Al2O3 |
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Hydrogen 1.49 % H 13.35 % H2O |
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Sulfur 15.84 % S 39.55 % SO3 |
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Oxygen 55.33 % O |
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______ ______ |
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100.00 % 100.59 % = TOTAL OXIDE |
| Empirical Formula: |
Na0.6Ca0.3K0.1Al3(SO4)2(OH)6 |
| Environment: |
Hydrothermally altered labradorite andesite. |
| IMA Status: |
Approved IMA 1982 |
| Locality: |
Okumanza, near the Kusatsu-Shirane volcano, Gumma Prefecture, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for A.E. Minami (1899-1977), who studied the hot springs around the Kusatsu-Shirane volcano, Japan. |
| Name Pronunciation: |
Minamiite + Pronunciation  |
| Synonym: |
ICSD 17051 |
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PDF 34-143 |
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