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0 item @ $0.00  

Gahnite

#RW48596

Gahnite

#RW48596
Availability
Sold
Size
11 x 7 x 6 cm - Cabinet 
Formula
ZnAl2O4 (RRUFF)
Locality
Hawks Pyrite mine, Charlemont, Franklin Co., Massachusetts, United States

An old specimen from the University of Delaware with label. The mine was apparently a Pyrite deposit of massive sulfide origin, according to Mindat. The specimen is large with dozens of dark green, lustrous crystals from 1 to 6mm. Gahnite is the zinc Spinel.

Gahnite

Formula
ZnAl2O4 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive - Granular, Striated 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
bluish green, grayish green, deep leek green, greenish black, bluish black 
Streak
gray 
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness

Data courtesy of Webmineral.

Collection
Robert J. Waidler Collection
Mineralpedia
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Previously Sold Gahnite
On Dakota Matrix
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Mindat
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