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Elbaite With Stibiotantalite & Tantalite-(Mn)

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KRM163625

Elbaite With Stibiotantalite & Tantalite-(Mn)

Description Tabs

Description
Locality: 
Stak Nala, Gilgit-Baltistan, Pakistan
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 1.8 × 1.4 cm
Description

 Black dark brown lustrous elbaite crystal incombination with stibiotantalite / tantalite mn , cleavelandite covered by minor lepidolite crystals.

An interesting specimen.

Mineral Data
What's on the rock

Elbaite

Formula: 
Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.5
Streak: 
White
Type Locality: 
Fonte del Prete, San Piero in Campo, Campo nell'Elba, Elba Island, Livorno Province, Tuscany, Italy...

Stibiotantalite

Formula: 
Sb(Ta,Nb)O4
Strunz: 
4.DE.30
Hardness: 
5.5
Type Locality: 
Greenbushes Sn placers, Greenbushes Tinfield, Bridgetown-Greenbushes Shire, Western Australia, Australia

Tantalite-(Mn)

Formula: 
MnTa2O6
Strunz: 
4.DB.35
Hardness: 
6.0
Type Locality: 
Utö Mines, Utö, Södermanland, Sweden

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