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Formula: CuAl
Alloy of copper and aluminium
Crystal System: Orthorhombic
Specific gravity: 5.12 calculated
Hardness: 4 to 4½
Colour: Steel-yellow
Environments
Localities
At the type locality, the Khatyrka meteorite, Iomrautvaam massif, Anadyrsky District, Chukotka Autonomous Okrug,
Russia, cupalite occurs as myrmekitic (wormy) and dendritic droplike grains from 1 x 4 to 5 x 35 microns
within khatyrkite (first generation) and as rounded or irregular grains
from 1 x 5 to 10 x 20 microns in cracks and interstices in khatyrkite
(second generation; this is usually intergrown with unnamed zinc
aluminides)
(AM 71.1278).
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