Thaumasite
Thaumasiet, Thaumasit, Thaumasita, Thaumasitt, Таумасит, ｿｰﾏｽ石, 風硬石, เทามาไซต์
Commonly known
rarer (so called collectors stones)
very rare (rarities)
relatively rare organic material
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Formula:
Ca3Si(SO4)(CO3)(OH)6·12H2O
Mineral class: sulfates Crystal system: hexagonal Mohs scale: 3.5 Density (g/cm3): 1.88 - 1.90 Refractive index: 1.464 - 1.507 Cleavage: poor Colors: colorless, white, yellow Transparency: transparent - translucent Luster: vitreous - greasy - silky Fluorescence: - Pleochroism: - Largest crystal: 5 cm? Deposits: worldwide Discovery: 1878 1st Description: 1878 Name: from the Greek word "thaumasion" (wonder) |
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Thaumasite
Size: 0.63 x 0.47 cm Weight: 0.51 ct Origin: South Africa Photo by kind permission of © www.ke4gems.com |
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Thaumasite Mineral
Size: 2.8 x 2.0 x 1.5 cm Origin: N'Chwaning II Mine / Hotazel / Kalahari Manganese Fields / Northern Cape Prov. / South Africa Photo by kind permission of © www.irocks.com |
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Thaumasite
Size: 0.99 x 0.65 cm Weight: 1,57 ct Origin: South Africa Photo by kind permission of © www.ke4gems.com |
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Thaumasite Mineral
Size: 1.2 x 0.5 x 0.5 cm Origin: N'Chwaning Mines / Hotazel / Kalahari Manganese Fields / Northern Cape Prov. / South Africa Photo by kind permission of © www.irocks.com |
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Thaumasite Mineral
Size: 7.0 x 4.0 x 4.0 cm Origin: Wessels Mine / Hotazel / Kalahari Manganese Fields / Northern Cape Prov. / South Africa Photo by kind permission of © www.irocks.com |
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