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Strätlingite & Ettringite

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SER749813

Strätlingite & Ettringite

Description Tabs

Description
Locality: 
Colle Fabbri, Spoleto, Perugia Province, Umbria, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 0.5 × 0.8 cm
Description

white micro crystals on matrix

Mineral Data
What's on the rock

Strätlingite

Formula: 
Ca2Al2SiO7·8H2O
Strunz: 
9.EG.25
Crystal System: 
Trigonal
Hardness: 
0.0
Type Locality: 
Mayener Feld, Southern lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany

Ettringite

Formula: 
Ca6Al2(SO4)3(OH)12·26H2O
Strunz: 
7.DG.15
Hardness: 
2.0 - 2.5
Type Locality: 
Ettringer Feld, Western lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany