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Quartz

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RPL785365

Quartz

Pseudomorph

Description Tabs

Description
Locality: 
Hurtstock Mine, Cardinham Wood, Cardinham, Cornwall, United Kingdom
Class: 
Massive/Crystalline
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 9 × 4.5 cm
Largest Crystal: 
1.50cm
Weight: 
285.00gr
Description

From a rarely offered location, an interesting and aesthetic large specimen of concave chalcedonic quartz with many well-defined negative casts after octahedral fluorite on the inside and a partial, thin crust of quartz pseudomorphs, probably after siderite, on the reverse. Both sides also have areas of sparkling euhedral quartz crystals.  

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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