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Quartz Psm Fluorite

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PDM1023196

Quartz Psm Fluorite

Pseudomorph

Description Tabs

Description
Locality: 
Sidi Rahal, El Kelaâ des Sraghna Province, Marrakesh-Safi Region, Morocco
Class: 
Crystal Group/Cluster
Size Range: 
Museum (18cm plus)
Size: 
19.3 × 16.2 × 5.5 cm
Weight: 
400.00gr
Description

Sharp cubic crystals that are now completely replaced by quartz. The cavity in the volcanic rock is a floater crystallized piece, and can be displayed at both sides. These pseudomorphs after a cubic precursor have been described as replacements after fluorite or halite, and I think that this big one is more consistent with a fluorite replacement.

Found in 09/2015 in an small locality mined by a local prospector near Sidi Rahal, that is located in a volcanic formation of Permian–Triassic age.

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Mineral Data
What's on the rock

Quartz

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

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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