Neptunite
Neptuniet, Neptunit, Neptunita, Нептунит
Commonly known
rarer (so called collectors stones)
very rare (rarities)
relatively rare organic material
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Formula:
K,Na2Li(Fe2+,Mn)2Ti2Si8O24
Mineral class: silicates Crystal system: monoclinic Mohs scale: 5 - 6 Density (g/cm3): 3.23 Refractive index: 1.690 - 1.736 Cleavage: perfect Colors: black Luster: vitreous Fluorescence: - Pleochroism: X: light yellow, Y: yellow-orange, Z: red-orange Largest Neptunite: 7.5 cm? Deposits: Australia, Brazil, Greenland, Canada, Mongolia, Russia, Tajikistan, USA Discovery: 1893 1st Description: 1899 Name: ref. to the Roman god Neptune |
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Neptunite Mineral
Origin: San Benito County / California / USA Photo by kind permission of © www.irocks.com |
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Neptunite
Weight: 0.37 ct Origin: Benitoite Gem Mine / San Benito County / California / USA Photo by kind permission of © www.steveperrygems.com |
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