Pyrite xls on matrix; Java (Central Java), Indonesia; 100 kg

Pyrite crystals on matrix from Java, Indonesia. 100 kg

This 100 kg position contains raw pieces of Pyrite on matrix from Central Java. The golden metallic aggregates display typical cubic structures, partly weathered, resulting in an interesting variety of textures. The material is well suited both for collectors who want to compare classic pyrite specimens from different localities and for beginners looking for a decorative and robust mineral.

Geology & Origin

Pyrite (iron sulfide) is a widespread sulfide mineral occurring in igneous, metamorphic and sedimentary rocks. In Central Java it mainly forms in hydrothermal veins and ore zones, where iron- and sulfur-rich fluids crystallize under specific geological conditions. Pyrite is one of the most classic and best-known minerals worldwide, valued for its characteristic golden metallic luster as well as its industrial importance in the production of sulfuric acid.