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Mesolite Natrolite Epitaxial Thomsonite-Ca Calcite & Todorokite

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ZLT177550

Mesolite Natrolite Epitaxial Thomsonite-Ca Calcite & Todorokite

Description Tabs

Description
Locality: 
Punta del Aguila, Playa Blanca, Yaiza, Lanzarote, Canary Islands, Spain
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.8 × 3.5 × 3 cm
Description

Part of a vug in basaltic rock showing fine fibers of mesolite with epitaxial natrolite overgrwoth, small tabular thomsonite-Ca on calcite and tiny dark crystals of todorokite.Some chabazite-Na is also present. Collected 1987.

Mineral Data
What's on the rock

Mesolite

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

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Todorokite

Formula: 
(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12·3H2O
Strunz: 
4.DK.10
Hardness: 
1.5
Type Locality: 
Todoroki mine, Yoichi, Shiribeshi Province, Hokkaido, Japan

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