What is "hubeite"

n. (context mineral English) A triclinic-pinacoidal mineral containing aluminum, calcium, hydrogen, iron, manganese, oxygen, and silicon.

The mineral hubeite, , is a sorosilicate of the group. Structurally it also belongs to the Akatoreite group. It was found and named after the province of Hubei, China. It is common to iron ores in a mine of that region. It occurs mainly as aggregates of fan like crystals. It is dark to pale brown, has orange-brown streak and is vitreous. Hubeite has a hardness of 5.5 in the Mohs scale, one good cleavage and conchoidal fracture. It is triclinic with a space group of P1*. The structure of hubeite is very uncommon, and in fact there is only one other mineral that fits the group, which is ruizite.