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Derbylite

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CR663826

Derbylite

Rare Mineral

Description Tabs

Description
Locality: 
Tripui, Ouro Preto, Minas Gerais, Brazil
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 0.6 × 0.6 cm
Description

Small grains of the very rare mineral derbylite from the type location.

Ex Dr. F. Krantz specimen and label

Note: The given size is the size of the glass vial.

Mineral Data
What's on the rock

Derbylite

Formula: 
Fe3+4Ti3Sb3+O13(OH)
Strunz: 
4.JB.55
Crystal System: 
Monoclinic
Hardness: 
5.0
Streak: 
Brown
Type Locality: 
Tripuí (Tripuhy), Main district, Ouro Preto, Iron Quadrangle, Minas Gerais, Brazil