Nifontovite
Nifontoviet, Nifontovit, Nifontovita, Нифонтовит, ニフォントフ石
Commonly known
rarer (so called collectors stones)
very rare (rarities)
relatively rare organic material
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Formula:
Ca3B6O6(OH)12·2H2O
Mineral class: borates Crystal system: monoclinic Mohs scale: 3.5 - 5 Density (g/cm3): 2.35 - 2.36 Refractive index: 1.575 - 1.584 Cleavage: poor Colors: colorless, grey Transparency: transparent - semitransparent Luster: vitreous Fluorescence: LW UV: violet Pleochroism: - Largest crystal: 6 cm? Deposits: Japan, Mexico, Russia Discovery: 1961 1st Description: 1961 (Lisitsyn, Malinko) Name: in honor of the Russian geologist Roman Vladimirovich Nifontov (1901 – 1960) |
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Nifontovite Mineral
Size: 1.5 x 0.4 x 0.3 cm Origin: Rey y Reina Mine / Charcas / San Luis Potosi / Mexico Photo by kind permission of © www.lucianabarbosa.com |
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Nifontovite
Size: 1.35 x 0.74 cm Weight: 2.16 ct Origin: Charcas / San Luis Potosi / Mexico Photo by kind permission of © www.rarestone.com |
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