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Tantalite-(Mn) Psm Fluornatromicrolite

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CLB221698

Tantalite-(Mn) Psm Fluornatromicrolite

Pseudomorph

Description Tabs

Description
Locality: 
Shigar District, Gilgit-Baltistan, Pakistan
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4.9 × 4.5 cm
Largest Crystal: 
2.50cm
Description

Another highlight in this auction is this extremely rare pseudomorph of tantalite-(mn) pseudomorph after fluornatromicrolite (researched). A (twinned?) crystal sits on top of the matrix with several more, but broken crystals inside. You'll not find a lot more of this material on the internet - and if you do, it will be highly priced.

Mineral Data
What's on the rock

Tantalite-(Mn)

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

Fluornatromicrolite

Formula: 
(Na,Ca,Bi)2Ta2O6F
Strunz: 
4.DH.15
Crystal System: 
Isometric
Hardness: 
5.0 - 0.0
Colour: 
Green
Streak: 
White
Type Locality: 
Quixaba pegmatite, Quixaba, Frei Martinho, Borborema mineral province, Paraíba, Brazil

Seller Information

Payment options: offline, paypal_wpp, paypal_wps