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Analcime

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QRI836834

Analcime

Former collection Potts (UK)

Description Tabs

Description
Locality: 
Ryabinoviy Pipe, Aldan, Sakha Republic, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.1 × 4.8 × 5.3 cm
Largest Crystal: 
5.00cm
Weight: 
130.00gr
Description

A significant cream white analcime crystal reigns on top of a matrix speck, surrounded by over half a dozen of half centimetric analcimes. The main crystal, with medium mother-of-pearl lustre and rather smooth faces, was probably part of a major drusy of several interconnected crystals. In fact, the missing sides are perfectly symmetric and appear like portions of other analcimes which are missing.

A good quality, quite sizeable analcime in pretty good conditions and from a rather unusual locality to spot on the market. It comes from the former Potts collection (UK), this is a pre-1994 specimen, as marked on the label.

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

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