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Hilgardite & Boracite

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SCH96025

Hilgardite & Boracite

Description Tabs

Description
Locality: 
Boulby Mine, Loftus, North Yorkshire, United Kingdom
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 2.4 × 2.8 cm
Description

Pink micro crystals of hilgardite occuring with and in light blue cubic boracite crystals.

Mineral Data
What's on the rock

Hilgardite

Formula: 
Ca2B5O9Cl·H2O
Strunz: 
6.ED.05
Hardness: 
5.0
Streak: 
White
Type Locality: 
Choctaw Salt Dome (Bayou Choctaw Salt Dome), Plaquemine, Iberville Parish, Louisiana, USA

Boracite

Formula: 
Mg3(B7O13)Cl
Strunz: 
6.GA.05
Crystal System: 
Orthorhombic
Hardness: 
7.0 - 7.5
Streak: 
White
Type Locality: 
Lüneburger Kalkberg, Lüneburg, Lower Saxony, Germany
schani

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