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Vivianite

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BSM132588

Vivianite

ex Philadelphia Academy of Natural Sciences #5193

Description Tabs

Description
Locality: 
Cumbria, United Kingdom
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 5.9 × 2.6 cm
Description

 A very interesting specimen with a vein of blackish green crystalls of vivianite running through an iron rich matrix consisting of siderite (some lenticular crystals as well as rombic cleaved masses) and limonite as a low grade ironstone.  On the main dispaly surface is a patch of bluish black radiating crystals to 1.2cms.

The location is suspicious, but difficult to find an alternative.  It could be Cornwall or even from the Tertiary ironstones of the South Coast.

Mineral Data
What's on the rock

Vivianite

Formula: 
Fe2+3(PO4)2·8H2O
Strunz: 
8.CE.40
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0
Type Locality: 
Wheal Kind (Wheal Kine), West Wheal Kitty group, St Agnes, St Agnes District, Cornwall, England, UK

Seller Information

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