Formula: Ca₂Mn²⁺Fe³⁺Si₄O₁₂(OH) · 2H₂O

Species:

Colour: Dark brown to light brown in thinner crystals.

Lustre: Vitreous

Hardness: 5½

Specific Gravity: 3.02

Crystal System: Triclinic

Name: Named in 2001 after the Hubei Province in China, where the type locality is located.

Type Locality: Fengjiashan Mine (Daye copper mine), Daye Co., Huangshi, Hubei – China