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Vlasovite Gittinsite Eudialyte & Magnesiokatophorite

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RMM37434

Vlasovite Gittinsite Eudialyte & Magnesiokatophorite

Rare Mineral

Description Tabs

Description
Locality: 
Kipawa, Sheffield Lake, Les Lacs-du-Témiscamingue, Abitibi-Témiscamingue, Québec, Canada
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3 × 3 cm
Description

This is a specimen of glassy brown vlasovite with a halo of white gittinsite surrounded by purple - pink eudialyte in a mixture of white albite, black magnesiokatophorite,and eudialyte.

The vlasovite "eye" is approximately 1.5 x 0.7 cm.

Both the vlasovite and gittinsite fluoresce under shortwave UV light.

Kipawa is the type locality for gittinsite.

Mineral Data
What's on the rock

Vlasovite

Formula: 
Na2ZrSi4O11
Strunz: 
9.DM.25
Hardness: 
6.0
Type Locality: 
Vavnbed Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Gittinsite

Formula: 
CaZrSi2O7
Strunz: 
9.BC.05
Hardness: 
0.0
Type Locality: 
Kipawa alkaline complex, Les Lacs-du-Témiscamingue, Témiscamingue RCM, Abitibi-Témiscamingue, Québec, Canada

Eudialyte

Formula: 
Na15Ca6(Fe2+,Mn2+)3Zr3[Si25O73](O,OH,H2O)3(OH,Cl)2
Strunz: 
9.CO.10
Hardness: 
5.0 - 6.0
Type Locality: 
Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland

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