1.8" Lustrous Ilvaite Crystal Cluster with Quartz - Inner Mongolia

This is a lustrous black ilvaite crystal cluster with small quartz crystals, collected from the Huanggang Fe-Sn Deposit (Huanggang Mines) of Inner Mongolia A. R., China. This location is renowned for producing exceptional ilvaite crystals, this specimen being no exception.

Ilvaite is an iron and calcium sorosilicate that often contains manganese and magnesium impurities. It occurs in magnetite, zinc and copper ore deposits, along with contact metamorphic deposits and zeolite zones. Ilvaite can be found as lustrous, radiating columnar crystals with striations, though it's typically unearthed in massive forms with indistinguishable crystal structures. It's named after the old Latin name of Elba Island ("Ilva") where it was first described.

An ilvaite deposit was recently discovered in the Huanggang mines of Inner Mongolia, China. These crystals were large, lustrous and literally redefined the potential quality of ilvaite crystals. This ilvaite specimen from China is a beautiful example of what the Huanggang mines have to offer.

The chemical formula of ilvaite is CaFe3+Fe2+2(Si2O7)O(OH).
Ilvaite & Quartz
Huanggang Fe-Sn Deposit, Hexigten Banner, Inner Mongolia, China
1.8 x 1.6"