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Analcime With Chabazite

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QRI1046243

Analcime With Chabazite

With Antique Label

Description Tabs

Description
Locality: 
Chetaibi, Wilaya de Skikda, Annaba Province, Algeria
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 2.9 × 2.6 cm
Largest Crystal: 
0.90cm
Weight: 
26.00gr
Description

In late 2019 I have come across this very interesting small lot of analcime from the locality of Chetaibi, Algeria.
Analcime consists of sizeable, water clear crystals of good size, nicely perched on solid matrix, often associated to white-yellowish spatic calcite.

In this very specimen, several white to fully transparent and lustrous analcime crystals partially cover some blocky, cream colored calcite crystals. Alongside, some white chabazite crystals as well.

I have never seen those specimens on the market before, and I think they do set a high standard among African analcime. From a small find from a Swiss engineer in the 60s (possibly from a roadcut?), only a few specimens were recovered.

This is one of the best of the entire lot.

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

Chabazite

Synonym Of: 

Chabazite-Ca

Formula: 
(Ca,K2,Na2)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 5.0

Chabazite-K

Formula: 
(K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Mg

Formula: 
(Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24]·10H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 0.0

Chabazite-Na

Formula: 
(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Sr

Formula: 
Sr2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 4.5

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Start 07 May 18:00
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Shipping Information

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Italy (Pacco Celere 3)
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Europe/Mediterranean Basin (Tracked; Zone 1)
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Americas, Asia, Africa (Tracked; Zone 2)
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Australia & Oceania (Tracked; Zone 3)
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