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Analcime & Siderite

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RBR678839

Analcime & Siderite

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5.5 × 4 cm
Description

This is a very fine specimen from Poudrette-quarry in Canada. The item consists mainly of white Analcime-crystals up to 1,8 cm in diameter and a satainy luster. The specimen is crystallized all around, some contacts are present on the backside, but not easy to see. The association with small balls of Siderite look sinteresting. Maybe there are some other minerals as well, but I'm not an expert for this location.

Mineral Data
What's on the rock

Analcime

Formula: 
Na2(Al2Si4O12)·2H2O
Strunz: 
9.GB.05
Crystal System: 
Triclinic
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Cyclopean Islands, Acitrezza (Aci Trezza), Etna Volcanic Complex, Catania Province, Sicily, Italy

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

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