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Pyrrhotite & Quartz

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SCH33180

Pyrrhotite & Quartz

Description Tabs

Description
Locality: 
Santa Eulalia, Aquiles Serdán Municipality, Chihuahua, Mexico
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 5.9 × 3.8 cm
Description

An old-time, showy and excellent Santa Eulalia combination specimen of lustrous pyrrhotite crystals with a nice patina, nestled in a field of tinted quartz crystals on massive sulfide matrix.

Specimens of this quality came out in the 1960s or 70s.

The bit of periphery damage is certainly not detracting to this fine piece.

 

Mineral Data
What's on the rock

Pyrrhotite

Formula: 
Fe1-xS (x = 0 to 0.17)
Strunz: 
2.CC.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Quartz

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

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