1050 CTS EPIDOTE /CRYSTAL SPECIMEN FROM PERU [MGW1100F ]

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Colors

 EPIDOTE SPECIMEN

 

The epidote is olive/ green in bladed to tabular crystals.Large quart crystals  attached.Mined in Peru.

Weight 1050 cts app

Size 68X35X44  mm app

Epidote is a structurally complex mineral having both single silicate tetrahedrons, SiO4, and double silicate tetrahedrons, Si2O7. The formula of epidote could be expressed in a such a way so as to reflect this organization; Ca2(Al, Fe)Al2O(SiO4)(Si2O7)(OH). The two aluminums represent the parallel chains of AlO6 and AlO4(OH)2 octahedra that are the heart of the epidote structure. The silicate groups and extra ions connect the chains together. Since the chains are parallel, the crystals tend to be prismatic. The chains are arranged in parallel planes and the perfect cleavage breaks the bonds between these planes. Epidote, while not general known for exceptional crystals can produce some magnificent specimens. Its unique green color which is often described as "pistachio", is quite striking in well colored specimens

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Pricing & Details

Bid Increment $1
Starting Bid $70
Auction ID 355366
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Starts 10th Dec 2017 10:00pm PST
Ends 11th Dec 2017 4:51pm PST

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