• Fluorite on Quartz
  • Fluorite on Quartz
  • Fluorite on Quartz
Gallery

Fluorite on Quartz

$2,500.00   €2,123  £1,830.00 approx.  

This specimen is priced in US dollars, all other prices are approximate.

ID: CC20225
The tungsten deposit at Kara-Oba in the Betpakdala, Kazakhstan, has over 100 mineral species, many of which occur as excellent specimen material.  This beautiful and most fascinating cabinet specimen has three translucent (although almost opaque) milky Quartz crystals with a splendid epitaxial Fluorite topping one of the two larger Quartz’s.  The Fluorite has initially developed as a pale peppermint green octahedral crystal of over 2 cm tall (between opposite tips), over which a later stage of intensely dark purple (almost black) cubic Fluorite has been precipitated.  The latter is epitaxial to the octahedron, forming cubic crystals aligned to the octahedral points.  Epitaxial growth is where successive generations of crystal growth align and orient their axes to those of earlier crystals, so preserving crystal symmetry.  The Quartz crystals are fascinating also, as many of the prism faces are covered is tiny milky Quartz crystals developed facing outward at ninety degrees.  A fabulous Fluorite on Quartz.

Details

Dimensions
7.3 × 8.0 × 8.0 cm
Categories
Fluorite and Halides, Quartz and Agate
Locality
Kara-Oba, Betpakdala Desert, Karagandy Province, Kazakhstan

Minerals on Specimen

Minerals on specimen
Fluorite, Quartz

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