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Mineralpedia Details for Vivianite

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Vivianite

Vivianite

Named for John Henry Vivian, the Welsh-Cornish mineralogist from Cornwall, England who discovered the mineral. Vivianite is a relatively common secondary mineral which occurs in oxidized metallic ore deposits and in granite pegmatites, as a replacement for organic material in fossilized bones, lake sediments, and in bog-iron ores and peat bogs, and as a rare mineral in caves. Some of the localities for Vivianite include in England, Germany, Serbia, Russia, Ukraine, Cameroon, the United States, Mexico, Brazil, Bolivia, and Japan.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/vivianite.pdf

Formula
Fe2+3(PO4)2ยท8H2
Crystal System
Monoclinic 
Crystal Habit
Divergent, Concretionary, Earthy 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
colorless, green, blue, dark green, dark bluish green 
Streak
bluish white 
Class
Monoclinic - Prismatic 
Fracture
Sectile 
Hardness
1.5-2 
WebMineral
View Vivianite 
Mindat
View Vivianite 

Vivianite from Kertch, Crimea pen., Crimea Oblast', Ukraine

Vivianite
            from Kertch, Crimea pen., Crimea Oblast', Ukraine

Deep blue long bladed crystals to 2cm in a large open cavity from a sedimentary phosphate deposit.

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Vivianite from Bull Moose mine, Custer Co., South Dakota, United States

Vivianite
            from Bull Moose mine, Custer Co., South Dakota, United States

Dark blue thin plates of Vivianite to 2cm on Ludlamite.

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Vivianite from Lavra do Ênio pegmatite, Galiléia, Doce valley, Minas Gerais, Brazil

Vivianite
            from Lavra do Ênio pegmatite, Galiléia, Doce valley, Minas Gerais, Brazil

Dark dark blue Vivianite crystals to 1.2cm with dark reddish brown Eosphorite groups.

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Vivianite from Blackbird mine, Lemhi Co., Idaho, United States

Vivianite
            from Blackbird mine, Lemhi Co., Idaho, United States

Deep blue prismatic crystals and several of them. The largest is 1.5cm.

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Vivianite from Morococala mine, Dalence, Oruro, Bolivia

Vivianite
            from Morococala mine, Dalence, Oruro, Bolivia

Blue bladed crystals, the longest to 1.8cm.

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Vivianite from Clear Spring mine, Homeland, Polk Co., Florida, United States

Vivianite
            from Clear Spring mine, Homeland, Polk Co., Florida, United States

Numerous deep blue crystals to 6mm.

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Vivianite from Big Fish River, Dawson dist., Yukon Territory, Canada

Vivianite
            from Big Fish River, Dawson dist., Yukon Territory, Canada

Dark blue bladed Vivianite to 2cm with bown, excellent Arrojadite crystals to 2mm.

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