Antipinite

Antipinite (IMA symbol: Atp^[1]) is a rare alkali Copper oxalate mineral with the chemical formula KNa₃Cu₂(C₂O₄)₄. Its type locality is the Tarapacá Region in Chile.^[2]

Antipinite
Rare antipinite crystals
General
Category	Oxalate minerals
Formula	KNa3Cu2(C2O4)4
IMA symbol	Atp[1]
Strunz classification	10.00.
Identification
Color	Blue
Specific gravity	2.53