Gahnite
Gahniet, Gahnit, Gahnita, Ганит, 鋅類晶石
Commonly known
rarer (so called collectors stones)
very rare (rarities)
relatively rare organic material
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Formula: ZnAl2O4
Mineral class: oxides Crystal system: cubic Mohs scale: 7.5 - 8 Density (g/cm3): 4.5 - 4.62 Refractive index: 1.791 - 1.818 Cleavage: indistinct Colors: yellow, dark green, brown, black Luster: vitreous Fluorescence: - Pleochroism: - Largest Gahnite: 12.5 cm (Sterling Hill / New Jersey / USA) Deposits: worldwide 1st Description: 1892 Name: in honor of the Swedish mineralogist John Gottlieb Gahn (1745 – 1818) |
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Gahnite Mineral
Size: 2.3 x 2.2 x 1.7 cm Origin: Franklin / Sussex County / New Jersey / USA Photo by kind permission of © www.irocks.com |
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Gahnite
Size: 1.15 x 0.54 x 0.25 cm Weight: 2.26 ct Origin: Brazil Photo by kind permission of © www.djraregems.com |
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Gahnite Mineral
Size: 1.1 x 0.7 x 0.3 cm Origin: Parelhas / Rio Grande do Norte / Brazil Photo by kind permission of © www.lucianabarbosa.com |
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Gahnite
Weight: 1.25 ct Origin: Parelhas / Rio Grande do Norte / Brazil Photo by kind permission of © www.lucianabarbosa.com |
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