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Cancrinite Elaeolite & Sodalite

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NST647454

Cancrinite Elaeolite & Sodalite

Type Locality

Description Tabs

Description
Locality: 
Ilmen Mountains, Chelyabinsk Oblast, Russian Federation
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 6.5 × 3.5 cm
Description

Cancrinite from the type locality with elaeolite, a massive grey to green or blue variety of nepheline with oily or greasy luster (Fatstone, Oilstone), and sodalite. Comes with a handwritten 19th century label.

 

Mineral Data
What's on the rock

Cancrinite

Formula: 
(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2·2H2O
Strunz: 
9.FB.05
Hardness: 
5.0 - 6.0
Streak: 
white
Type Locality: 
Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

Elaeolite

Variety Of: 

Nepheline

Formula: 
(Na,K)AlSiO4
Strunz: 
9.FA.05
Hardness: 
5.5 - 6.0
Hardness: 
0.0

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