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Derbylite

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SKY189675

Derbylite

Classic Locality

Description Tabs

Description
Locality: 
Buca Della Vena Mine, Apuan Alps, Lucca Province, Tuscany, Italy
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1 × 0.6 cm
Description

Well formed derbylite crystals, a rare Fe-Ti-Sb oxide mineral only known from two localities worldwide. The crystals show the classic twinning for the species. The specimens from Buca dells Vena are, by far, the most aesthetic for the species. Very nice under the microscope!

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

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