Chalcopyrite, Treated


Login to see prices
SKU: RS0882 Category:


All of our Minerals & Crystals are 100% Genuine Specimens & come with a Certificate of Authenticity!

Chalcopyrite is a copper iron sulphide mineral that crystallizes in the tetragonal system. It has a brassy to golden yellow colour and a hardness of 3.5 to 4 on the Mohs scale. Its streak is diagnostic as green tinged black. On exposure to air, chalcopyrite oxidises to a variety of oxides, hydroxides and sulphates.

Treated chalcopyrite are specimens that have been treated with acid to give them a blue and purple iridescence, which enhances their visual appeal. In nature the surface of chalcopyrite loses its metallic luster and brass-yellow colour upon weathering. It tarnishes to a dull, grey-green colour, but in the presence of acids the tarnish can develop a red to blue to purple iridescence.

**WarningContains copper which can cause serious health issues if not handled correctly. DO NOT hammer or break this rock up.

Treated, from Mexico

SIMILAR TO SEENThe image shows an example of the single specimen you will receive. This will be picked from our stock box graded and with a size within the minimum and maximum size range indicated. It will not be the exact specimen in the photo, the colours, shape, size and style may vary as with any natural item. To guarantee the specimen  you receive will be representative by that in photo.