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Chkalovite With Sodalite

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PDM849537

Chkalovite With Sodalite

Fluorescent

Description Tabs

Description
Locality: 
Ilímaussaq, Narsaq, Kujalleq, Greenland
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 4.2 × 3 cm
Description

Apple green sodalite masses that display a very intense yellow-orange fluorescence under LW ultraviolet light and orange under SW UV. They are associated to whitish-blue chkalovite, and green natrolite (activated by uranyl groups). Other associated species that are not fluorescent are black aegirine and brown masses of probably sphalerite.

Found by Dutch collector Peter Vink in the Kuannersuit area, in August 2017.

Mineral Data
What's on the rock

Chkalovite

Formula: 
Na2BeSi2O6
Strunz: 
9.DM.20
Hardness: 
6.0
Colour: 
White
Type Locality: 
Malyi Punkaruaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Sodalite

Formula: 
Na8(Al6Si6O24)Cl2
Strunz: 
9.FB.10
Crystal System: 
Isometric
Hardness: 
5.5 - 6.0
Streak: 
White
Type Locality: 
Ilímaussaq complex, Narsaq, Kujalleq, Greenland

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