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Quartz

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PDM764687

Quartz

Gem Crystal

Description Tabs

Description
Locality: 
Gronda da Cavrein Valley, Surselva Region, Grisons, Switzerland
Class: 
Single Crystal
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3 × 2 cm
Description

Clean and lustrous double-terminated quartz crystal where some microscopic oriented fluid inclusions are present. According to Erwin Boxstaens, who collected it in the summer of 2008, almost all crystals in the pocket were floaters because they were broken-off the matrix and healed. This recrystallization generated a spiky termination of polycrystalline rhombohedral faces, without major etching distortions in the other crystal faces.

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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