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Stibiotantalite With Elbaite & Lepidolite

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KRM107386

Stibiotantalite With Elbaite & Lepidolite

Description Tabs

Description
Locality: 
Paprook, Nuristan Province, Afghanistan
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.1 × 1.4 cm
Description

Bright yellow stibiotantalite (Sb(Nb,Ta)O4 ) incombination with minor elbaite & lepidolite  , old time finds , very rare these days from the locality.

Analyzed.

Mineral Data
What's on the rock

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

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...

Lepidolite

Synonym Of: 

Mica Group

Formula: 
KLi2Al(Si4O10)(F,OH)2 to K(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Group Parent: 
Mica
Hardness: 
2.5 - 3.5
Colour: 
Pink, light purple, light rose red
Streak: 
White

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