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Chalcopyrite with Galena

#AH58883

Chalcopyrite with Galena

#AH58883
Availability
Sold
Size
9.5 x 4 x 5 cm - Cabinet 
Formula
Cu1+Fe3+S2 (RRUFF)
Locality
Holland mine, Patagonia dist., Santa Cruz Co., Arizona, United States
Tagged
ore mineral , sulfide , copper

Here is another specimen collected by the late Arnold Hampson. This guy was incredible and collected throughout the East coast, Midwest and Western States. Take a minute and read about Hampson's life of mineral collecting here. This specimen was collected on his western States tour is a nice ore mineral from the little known Holland mine in Arizona. Some of the areas on this specimen show a light green fibers of Tremolite (or other amphibole) indicating a total flood of sulfides engulfing the country rock in which it mineralized.

The Chalcopyrite is the typical golden color distinguishing it from Pyrite. Most of the matrix however is Galena.

Chalcopyrite

Formula
Cu1+Fe3+S2 
Crystal System
Tetragonal 
Crystal Habit
Euhedral Crystals, Striated, Druse 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
brass yellow, honey yellow 
Streak
greenish black 
Class
Tetragonal - Scalenohedral 
Fracture
Brittle 
Hardness
3.5 

Data courtesy of Webmineral.

Collection
Arnold G Hampson Collection

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