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Quartz

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PDM847067

Quartz

Description Tabs

Description
Locality: 
Las Trenzas, Cehegin, Murcia, Spain
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.6 × 3.1 × 2.8 cm
Largest Crystal: 
1.90cm
Weight: 
29.00gr
Description

Very well defined brown crystal of quartz to 19 mm in size, on a limestone matrix. The colour is natural, but it is not black due to irradiation or substitution of Si by Al, but because the rock is very rich in organic matter, that produces a strong oily odour when it is bumped with a hammer. Mounted on a socle.

Self-collected in 04/1999.

Mineral Data
What's on the rock

Quartz

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

Seller Information

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