Pseudomorph Goethite After Marcasite | Prophecy Stone | 17 gr | Farafra Oasis, Egypt
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Pseudomorphs are mineral specimens that have the external shape of one mineral but are composed of another. The pseudomorph goethite after marcasite forms when marcasite is exposed to oxidizing conditions and starts to oxidize and break down. As the marcasite breaks down, goethite replaces it in the crystal structure, preserving the shape of the original marcasite crystal. The resulting specimen appears as a marcasite crystal, but is actually composed of goethite.
The Farafra Oasis, in the White Desert, has been known for a number of years to deliver incredible pseudomorph specimens. The pseudomorphs occur within the Cretaceous Khoman Chalk, from which the White Desert derives its name.
These specimens are remarkable for their relatively sharp marcasite crystal forms in aesthetic crystal clusters. They are in excellent condition. This collector's specimen is unique, of great quality and ready for display.
Name: Goethite After Marcasite Pseudomorph Specimen Size: Miniature-Sized Specimen Dimensions: 31x22x23 mm / 1.2x0.9x0.9 inches Weight: 17 grams / 0.6 ounces Origin: White Desert, Farafra Oasis, Egypt
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Specimen Information Cards and/or Appraisals are provided when applicable.
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Très belle pièce. Je commence à collectionner les météorites et cette pièce est peu dispendieuse et va enrichir ma collection. Expédition rapide et excellente communication avec les gens de Canagem. AAA+++
It wasn't until I got a new UV light that I was able to see the amazing colour of this flourite. The specimen is very attractive in natural light, and crazy beautiful under 254nm UV! I love it!
Pseudomorph Goethite After Marcasite | Prophecy Stone | 17 gr | Farafra Oasis, Egypt
(0)
1500
$15.00 CAD
Unit price/ per
1 low in stock
Minimum of
1
/
increment of
1
Pseudomorphs are mineral specimens that have the external shape of one mineral but are composed of another. The pseudomorph goethite after marcasite forms when marcasite is exposed to oxidizing conditions and starts to oxidize and break down. As the marcasite breaks down, goethite replaces it in the crystal structure, preserving the shape of the original marcasite crystal. The resulting specimen appears as a marcasite crystal, but is actually composed of goethite.
The Farafra Oasis, in the White Desert, has been known for a number of years to deliver incredible pseudomorph specimens. The pseudomorphs occur within the Cretaceous Khoman Chalk, from which the White Desert derives its name.
These specimens are remarkable for their relatively sharp marcasite crystal forms in aesthetic crystal clusters. They are in excellent condition. This collector's specimen is unique, of great quality and ready for display.
Name: Goethite After Marcasite Pseudomorph Specimen Size: Miniature-Sized Specimen Dimensions: 31x22x23 mm / 1.2x0.9x0.9 inches Weight: 17 grams / 0.6 ounces Origin: White Desert, Farafra Oasis, Egypt
