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Ferrierite-NH4

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SKY751329

Ferrierite-NH4

Rare Mineral

Description Tabs

Description
Locality: 
Jenišův Újezd, Bílina, Teplice, Ústí nad Labem Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 0.8 × 0.6 cm
Description

Tan acicular crystals of the new and extremely rare mineral ferrierite-NH4 (IMA 2017-099) from one of the only three known localities worldwide.

First (or second - after ammonioleucite) natural ammonium-dominant zeolite.

Mineral Data
What's on the rock

Ferrierite-NH4

Formula: 
(NH4,Mg0.5)5(Al5Si31O72)·22H2O
Crystal System: 
Orthorhombic
Type Locality: 
Libous quarry, Chomutov (Komotau), Ústí Region, Czech Republic

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