Mineralpedia Details for 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)2ยท8H2O
- 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
Deep blue long bladed crystals to 2cm in a large open cavity from a sedimentary phosphate deposit.
Vivianite from Bull Moose mine, Custer Co., South Dakota, United States
Dark blue thin plates of Vivianite to 2cm on Ludlamite.
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.
Vivianite from Blackbird mine, Lemhi Co., Idaho, United States
Deep blue prismatic crystals and several of them. The largest is 1.5cm.
Vivianite from Morococala mine, Dalence, Oruro, Bolivia
Blue bladed crystals, the longest to 1.8cm.
Vivianite from Clear Spring mine, Homeland, Polk Co., Florida, United States
Numerous deep blue crystals to 6mm.
Vivianite from Big Fish River, Dawson dist., Yukon Territory, Canada
Dark blue bladed Vivianite to 2cm with bown, excellent Arrojadite crystals to 2mm.
