Hedenbergite
Hedenbergite is a silicate mineral recognized among collectors for its crystal form and distribution, with known Chinese sources.
About Hedenbergite
Hedenbergite is a silicate mineral in the pyroxene group (clinopyroxene — diopside-hedenbergite series) and has the chemical formula CaFe2+Si2O6. It crystallizes in the monoclinic system and holds a steady position among silicate species.
Identification & care
Specimens usually show prismatic, acicular needle-like crystals; radiated groups; bladed; massive. Its color range is broad, including dark green, black, brownish, and greenish black. The luster is vitreous, resinous, the streak is pale gray, and specimens range from opaque to translucent. The cleavage is good on {110} at ~87°. The fracture is uneven, which aids identification.
Collector context
Collector notes
For collectors, Hedenbergite is a benchmark crystalline species. Hedenbergite is widely represented across Chinese provinces, including Gansu, Anhui, Hebei, Guangdong.