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Quartz Dolomite & Apophyllite

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FRN99708

Quartz Dolomite & Apophyllite

Description Tabs

Description
Locality: 
Daye Mine, Ezhou Prefecture, Hubei Province, China (Peoples Republic)
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.7 × 3.7 × 3.2 cm
Description

Cluster of completely terminated quartz crystals are partly coated with microscopic pyrite and dolomite. The lustrous and translucence apophyllite scattered on the side of quartz together with light brown dolomite.

Mineral Data
What's on the rock

Quartz

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

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White

Apophyllite

Synonym Of: 

Fluorapophyllite-(K)

Formula: 
KCa4(Si8O20)(F,OH)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.5 - 5.0

Fluorapophyllite-(Na)

Formula: 
NaCa4(Si8O20)F·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Hydroxyapophyllite-(K)

Formula: 
KCa4(Si8O20)(OH,F)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0
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