Anthoinite

Anthoinite (IMA symbol: Atn^[1]) is an aluminium tungsten oxide mineral with the chemical formula AlWO₃(OH)₃. Its type locality is Maniema in the Democratic Republic of the Congo.^[2]

Anthoinite
Anthoinite found in Rwanda
General
Category	Minerals
Formula	AlWO3(OH)3
IMA symbol	Atn
Identification
Color	White (when free of iron)
Mohs scale hardness	1
Luster	Dull
Streak	White
Diaphaneity	Translucent
Specific gravity	4.78 - 4.87
Density	4.78 - 4.87 g/cm3 (Measured) 4.84 g/cm3 (Calculated)