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Petscheckite & Allanite

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UVM680394

Petscheckite & Allanite

Radioactive

Description Tabs

Description
Locality: 
Håkonhals Quarry, Finnøya, Hamarøy, Nordland, Norway
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 2.4 × 2.1 cm
Description

A black mass of intergrown petscheckite and allanite from Norway.   A fine example of this rare uranium bearing oxide.

Mineral Data
What's on the rock

Petscheckite

Formula: 
UFe(Nb,Ta)2O8
Strunz: 
4.DH.35
Hardness: 
5.0
Colour: 
Black
Type Locality: 
Antsakoa I pegmatite, Berere Pegmatite Field, Tsaratanàna District, Betsiboka Region, Mahajanga Province (Majunga), Madagascar

Allanite

Synonym Of: 

Allanite-(Ce)

Formula: 
{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Hardness: 
5.5 - 6.0

Allanite-(La)

Formula: 
{CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Hardness: 
6.0

Allanite-(Y)

Formula: 
{CaY}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Hardness: 
5.5 - 6.5

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