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Tapiolite-(Fe)

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CHA604859

Tapiolite-(Fe)

Rare Mineral

Description Tabs

Description
Locality: 
Rio Graia, Trontano, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.1 × 1.5 cm
Description

specimen with two very nice geminate metallich dark gray crystal of tapiolite-(Fe) in/on matrix

Mineral Data
What's on the rock

Tapiolite-(Fe)

Formula: 
(Fe,Mn)(Ta,Nb)2O6
Strunz: 
4.DB.10
Hardness: 
6.0 - 6.5
Colour: 
Black
Type Locality: 
Tapiolite-(Fe) typelocality, Kulmala, Sukula Pegmatites, Tammela, Southern Finland Region, Finland

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