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Haüyne With Sanidine & Opal Var Hyalite

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CLB112515

Haüyne With Sanidine & Opal Var Hyalite

Classic Locality

Description Tabs

Description
Locality: 
Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.9 × 1.8 cm
Description

Interesting specimen. Very rich in haüyne. I must confess 'hyalite' is a guess as I have no other idea what the green, seemingly botryoidal mass might be. You'll get a second sample with this specimen.

Mineral Data
What's on the rock

Haüyne

Formula: 
(Na,Ca)4-8(Al6Si6O24)(SO4,S,Cl)1-2
Strunz: 
9.FB.10
Hardness: 
5.5 - 6.0
Type Locality: 
Lake Nemi, Alban Hills, Rome Province, Latium, Italy

Sanidine

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Monoclinic - Prismatic
Hardness: 
6.0
Streak: 
White
Type Locality: 
Drachenfels, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Streak: 
White

Hyalite

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Formula: 
SiO2·nH2O
Hardness: 
5.5 - 6.5
Streak: 
white

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