hedenbergite, silicate mineral, calcium iron silicate of the pyroxene group closely analogous to diopside (q.v.).

What is Hedenbergite quartz?

Description: Hedenbergite is a dark green to black member of the pyroxene group. It usually forms due to metamorphism of iron-rich or carbonate-rich sedimentary rocks or as a primary mineral in certain syenites and related rocks.

What type of silicate is pyroxene?

Pyroxene minerals are single-chain silicates. That means their silica tetrahedra are arranged in long single chains.