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Hulsite

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ESM608905

Hulsite

Description Tabs

Description
Locality: 
Titovskoe B Deposit, Tas-Khayakhtakh, Dogdo River, Polar Yakutia, Sakha Republic, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.7 × 1.2 cm
Description

Lustrous black hulsite crystals on matrix

Mineral Data
What's on the rock

Hulsite

Formula: 
(Fe2+,Mg)2(Fe3+,Sn)(BO3)O2
Strunz: 
6.AB.45
Hardness: 
3.0
Colour: 
Black
Type Locality: 
Brooks Mountain, Seward Peninsula, Nome Borough, Alaska, USA