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Quartz With Petroleum

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PDM805059

Quartz With Petroleum

Fluorescent

Description Tabs

Description
Locality: 
Dakhlet Nouadhibou Region, Mauritania
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3 × 2.4 cm
Description

Group of gemmy Herkimer-type diamond quartz crystals rich in with blue-white fluorescent oily inclusions from a recent find in the West region of Mauritania, coming directly from a local miner. Typical pieces from this locality are very rich in black flattened inclusions, mostly parallelly oriented to the rhombohedral faces, and they are not fluorescent.

I selected this piece because of the size and gemmyness, and abundance in fluorescent inclusions. It presents some chippings, which is almost inevitable in these pieces, mined by jet unexperienced local collectors. This is one is one of the bigger pieces and with good intensity of fluorescence inclusions.

Found in March 2020.

Mineral Data
What's on the rock

Quartz

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

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