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Liandratite & Bismutotantalite

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JYJ896131

Liandratite & Bismutotantalite

Description Tabs

Description
Locality: 
Fianarantsoa I, Haute Matsiatra, Madagascar
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.4 × 0.8 cm
Description

Yellow orange impregnations of liandratite in bismutotantalite from Madagascar. Ex Gilbert Gauthier colleciton. 

 

Mineral Data
What's on the rock

Liandratite

Formula: 
U(Nb,Ta)2O8
Strunz: 
4.DH.35
Hardness: 
3.5
Type Locality: 
Antsakoa I pegmatite, Berere Pegmatite Field, Tsaratanàna District, Betsiboka Region, Mahajanga Province (Majunga), Madagascar

Bismutotantalite

Formula: 
Bi(Ta,Nb)O4
Strunz: 
4.DE.30
Hardness: 
5.0 - 5.5
Type Locality: 
Gamba Hill, Busiiro Co. (Bushiro Co.), Wakiso District, Uganda