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Ilvaite & Andradite

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BCK693589

Ilvaite & Andradite

David Burgess Collection

Description Tabs

Description
Locality: 
Kangerluarsuk Fjord, Ilímaussaq, Narsaq, Kujalleq, Greenland
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 6 × 2.8 cm
Description

You are bidding on a large sample with lots of vugs hosting small black crystals of ilvaite and birght green andradite octahedra. Unusual and obscure locality for the mineral! David Burgess collection. 

Mineral Data
What's on the rock

Ilvaite

Formula: 
CaFe2+2Fe3+(Si2O7)O(OH)
Strunz: 
9.BE.07
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Torre di Rio - Santa Filomena area (Monte della Torre), Rio Marina, Elba Island, Livorno Province, Tuscany, Italy

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Drammen, Buskerud, Norway

Seller Information

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