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Mysterious Pyroxen

A cool and very unusual gemstone, so unusual that its hard to find iany properties for Pyroxene. But that never stops us - enjoy!

 

Size: 13x18x6-7 mm

 

In stock:  3

 

Price:  USD 5.00 a piece

Pyroxene are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. They share a common structure consisting of single chains of silica tetrahedra and they crystallize in the monoclinic and orthorhombic systems. The chain silicate structure of the pyroxenes offers much flexibility in the incorporation of various cations and the names of the pyroxene minerals are primarily defined by their chemical composition. Pyroxene minerals are named according to the chemical species occupying the X (or M2) site, the Y (or M1) site, and the tetrahedral T site. Cations in Y (M1) site are closely bound to 6 oxygens in octahedral coordination. Cations in the X (M2) site can be coordinated with 6 to 8 oxygen atoms, depending on the cation size.

The name pyroxene comes from the Greek words for fire (πυρ) and stranger (ξένος), because of their presence in volcanic lavas, where they are sometimes seen as embedded crystals.

Pyroxene is found in Arizona, USA, as well as in other locations worldwide.


 

 

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Latest update: 28 augusti 2015