Formula :
Cu2Al[(OH)4/AsO4] * 4 H2O
System: monoclinic Hardness:2-2½ Rarity:rare
Strunz id:VII/D.20-40 -
PHOSPHATES, ARSENATES and VANADATES
Name origin: Named in 1825 by Wilhelm Karl von Haidinger from the Greek λειρός = pale, and κουία = powder, in allusion to the color of its streak.
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