Clinohumite
Clinohumiet, Clinohumita, Klinohumit, Клиногумит, クリノヒューマイト, 斜硅鎂石
Commonly known
rarer (so called collectors stones)
very rare (rarities)
relatively rare organic material
Clinohumite is a very rare gemstone, named after its monoclinic crystal structure and its relation to humite which was named after Sir Abraham Hume (1749-1838), English collector of gemstones, minerals, and pieces of arts.
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Formula: (Mg,Fe2+)9(SiO4)4(F,OH)2
Mineral Class: Silicates Crystal System: monoclinic Mohs Scale: 6 Density (g/cm3): 3.17 - 3.35 Refractive index: 1.628 - 1.674 Cleavage: poor Colors: White, yellow (Pamir), orange (Pamir), reddish brown (Taymyr), brown, greenish Luster: vitreous Fluorescence: SW: yellow-orange Pleochroism: X: golden-yellow, brown-yellow, dark orange Y: light yellow, yellow-orange Z: colorless, light yellow, yellow-orange Largest faceted Clinohumite: ? Deposits: worldwide, in gem quality: Kuchilal Mine / 50 km south of Khorog / Pamir Mts. / Tajikistan, Epanko / Mahenge / Morogoro Region / Tanzania, Uluguru Mts. / Morogoro Region / Tanzania, Taymyr District / Russia, Afghanistan, Pakistan Discovery: 1876 1st Description: 1892 Name: for its monoclinic crystal system, and relation to humite History: • First description in 1892 by E.S. Dana. • Discovery of the first Clinohumite in gem quality in Russia in 1983. • Discovery of the second deposit of gemmy Clinohumite in Tanzania in 2005. |
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Kuchilal Mine / 50 km south of Khorog / Pamir Mts. / Tajikistan |
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Epanko / Mahenge / Morogoro Region / Tanzania |
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Uluguru Mts. / Morogoro Region / Tanzania |
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Clinohumite Mineral
Size: 1.5 x 1 x 0.5 cm Origin: Kokcha Valley / Badakhshan Prov. / Afghanistan Photo by kind permission of © www.irocks.com |
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Clinohumite
Size: 0.97 x 0.81 x 0.49 cm Weight: 2.31 ct Origin: Tanzania Photo by kind permission of © www.bkkgemstones.com |
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Clinohumite Mineral
Origin: Kuchilal Mine / 50 km south of Khorog / Pamir Mts. / Tajikistan Photo by kind permission of © www.irocks.com |
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Clinohumite
Size: 1.80 x 1.41 cm Weight: 17.0 ct Origin: Kuchilal Mine / 50 km south of Khorog / Pamir Mts. / Tajikistan Photo by kind permission of © www.americanthai.com |
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Clinohumite
Weight: 7.53 ct Origin: Pamir Mts. / Tajikistan Photo by kind permission of © www.gemfrance.com |
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Clinohumite
Size: 0.81 cm Weight: 2.44 ct Origin: Russia Photo by kind permission of © www.ke4gems.com |
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Clinohumite Mineral
Size: 1.14 x 0.74 x 0.46 cm Origin: Tajikistan Photo by kind permission of © Darlene Cobler |
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Clinohumite Mineral
Origin: Ladjuar Madan / Kokcha Valley / Afghanistan Photo by kind permission of © Trinity Mineral Co. |
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Clinohumite Mineral
Size: 3.5 x 2.3 x 1.7 cm Origin: Gilgit / Gilgit-Baltistan / Pakistan Photo by kind permission of © www.collectorfinejewelry.com |
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Clinohumite
Size: 0.51 x 0.51 cm Weight: 0.50 ct Origin: Afghanistan Photo by kind permission of © www.rarestone.com |
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