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Calcite & Quartz

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CR181233

Calcite & Quartz

Description Tabs

Description
Locality: 
Naica, Saucillo Municipality, Chihuahua, Mexico
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.8 × 5.5 × 4.5 cm
Description

This is a very nice and old specimen from Hoffman collection:

Sharp white clacite crystals are sitting on a bed of translucent white quartz crystals. The terminations of the rhombohedral calcite crystals, which are complete around the top, have "exploded" into many small, sharp "dog-tooth" scalenohedrons.

Beautiful

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Quartz

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