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Agrellite Eudialyte & Vlasovite

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RMM36284

Agrellite Eudialyte & Vlasovite

Rare Mineral

Description Tabs

Description
Locality: 
Kipawa, Sheffield Lake, Les Lacs-du-Témiscamingue, Abitibi-Témiscamingue, Québec, Canada
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.3 × 5.5 × 3 cm
Description

This is a specimen of massive grey-green agrellite. It fluoresces in both short and longwave UV light. In one corner is a patch of brown vlasovite with minor white gittinsite surrounded by purple - pink eudialyte and white albite.

Both the vlasovite and gittinsite fluoresce under shortwave UV light. Kipawa is the type locality for both agrellite and gittinsite.

Mineral Data
What's on the rock

Agrellite

Formula: 
NaCa2Si4O10F
Strunz: 
9.DH.75
Crystal System: 
Triclinic
Hardness: 
5.5
Streak: 
White
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

Vlasovite

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

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