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Madagascar, Maroc & Arkansas containers have arrived! Furthermore, a large BACKYARDSALE with 32 tons of rough stones, 173 boxes with rare shells, 117 boxes of Darshan incense and lots of lava images EVERYTHING HAS TO GO! 

 

 

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Bornite Peacock Chalcopyrite Pyrite / Copper Peacock eye

Borniet1WEB2048_product

Bornite Peacock Chalcopyrite Pyrite / Copper Peacock eye

Product

Bornite Peacock Chalcopyrite Pyrite / Copper Peacock eye

Description

This typical variant comes from Arizona in the USA where it is found very little.

Dimensions

50-250grs

Prijs elders

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More information

The mineral bornite is a copper-iron-sulfide having the chemical formula Cu5FeS4. The mineral has an orthorhombic crystal structure. It has a brown to copper red color on a fresh fracture. Oxidation changes color and gets the mineral blue, purple and red hues. The hardness is 3 and the average density is 5.09. After heating bornite is magnetic and it is not radioactive. Bornite is named after the Austrian mineralogist I. von Born (1742-1791). Bornite is often found in pegmatites. It is among others in Arizona, Butte and Mexico. Bornite is an important copper ore, and often occurs together with the much more common chalcopyrite. It is important for the amount of copper that it contains: about 63 mass per cent is copper.

 

STRONG TRADEMARKS TIMMERSGEMS GROUP