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Zirconolite Var Polymignite

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MCH623747

Zirconolite Var Polymignite

ex Dr. Ehmke, GDI Berlin

Description Tabs

Description
Locality: 
Kjelsås, Sørkedalen, Vestre Aker, Oslo, Norway
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 5.6 × 4.5 cm
Description

Within an apotroctolite, a plutonic rock from the Oslo region, two small silvery metallic elongated polymignite crystals are embedded, each approx. 2 mm in size.

Mineral Data
What's on the rock

Zirconolite

Formula: 
CaZrTi2O7
Strunz: 
4.DH.30
Crystal System: 
Orthorhomibic, Monclinic, Trigonal, Metamict
Hardness: 
5.5
Type Locality: 
Afrikanda Massif, Afrikanda, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Polymignite

Variety Of: 

Zirconolite

Formula: 
CaZrTi2O7
Strunz: 
4.DH.30
Hardness: 
5.5
Formula: 
(Ca,Fe,Y,Th)(Nb,Ti,Ta,Zr)O4
Crystal System: 
Orthorhombic
Hardness: 
0.0

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