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Truscottite Mesolite & Thomsonite-Ca

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RSL586629

Truscottite Mesolite & Thomsonite-Ca

Description Tabs

Description
Locality: 
Cirque de Cilaos, Piton des Neiges, Reunion
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.5 × 1.4 cm
Description

Excellent micromount of mesolite needle-like crystals, brilliant and transparent, accompanied by truscottite and thomsonite-Ca. Truscottite shows a pearly luster and a laminar shape. From a locality/country not represented in collections.

Mineral Data
What's on the rock

Truscottite

Formula: 
(Ca,Mn)14Si24O58(OH)8·2H2O
Strunz: 
9.EE.35
Hardness: 
3.5 - 0.0
Type Locality: 
Lebong Donok Mine, Rejang Lebong District (Rediang Lebong District), Bengkulu Province (Benkoelen Province; Benkulen Province), Sumatera Island (Sumatra Island), Indonesia

Mesolite

Formula: 
Na2Ca2Si9Al6O30·8H2O
Strunz: 
9.GA.05
Hardness: 
5.0

Thomsonite-Ca

Formula: 
NaCa2[Al5Si5O20]·6H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Old Kilpatrick, Strathclyde (Dunbartonshire), Scotland, UK