Formula :
(Al,Y)Cu6[(OH)2/AsO4]3 * 3 H2O
System: hexagonal Hardness:3-4 Rarity:very rare
Strunz id:VII/D.53-20 -
PHOSPHATES, ARSENATES and VANADATES
Name origin: Named in honor of Hatfield Goudey (13 December 1906, Red Bank, New Jersey, USA – 11 April 1985, Mateo, California, USA), economic geologist, mineral collector and dealer in microscopic specimens, San Mateo, California, USA, who contributed to the knowledge of the type locality. He was elected to the Micromounter Hall of Fame in 2003.
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