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Strontioginorite & Howlite

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CLB507734

Strontioginorite & Howlite

Rare Mineral

Description Tabs

Description
Locality: 
Kohnstein Quarry, Niedersachswerfen, Nordhausen District, Thuringia, Germany
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.9 × 5.2 × 3 cm
Description

Very good, large colorless and transparent strontioginorite crystals with massy, silky-white howlite and a little lavender-colored anhydrite. Rare combination.

Mineral Data
What's on the rock

Strontioginorite

Formula: 
(Sr,Ca)2B14O23·8H2O
Strunz: 
6.FC.15
Crystal System: 
Monoclinic
Hardness: 
2.0 - 3.0
Type Locality: 
Königshall-Hindenburg Mine, Reyershausen, Göttingen, Lower Saxony, Germany

Howlite

Formula: 
Ca2B5SiO9(OH)5
Strunz: 
6.CB.20
Hardness: 
3.5 - 6.5
Streak: 
White
Type Locality: 
Black's quarry, Brookville farm, Martock, West Hants, Hants Co., Nova Scotia, Canada...

Seller Information

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