SOLD !
BORNIT with CHALCOPYRIT
BORNITE = BUNT COPPER is formed in iron-poor copper deposits and is a very important copper ore with a COPPER content of over 60% by weight.
The colors range from brown-red to violet and blue, with a variegated tinge.
Our stones are NATURAL, i.e. NOT treated with acid to improve the color effect, as is usually the case with BUNTKUPFERKIES.
The shiny gold component is CHALCOPYRIT (COPPER CRYSTAL)
SAN MIGUEL MINE - Mexico
Weight: 520 g Dimensions: 9 x 6 x 5 cm
