Cool combination of Quartz, Pyrite and Sphalerite in one. This specimen is greatly appreciated all around. 

Location: 

Campamento Carahuacra 

Yauli, Provincia de Yauli

Junin

Peru 

Size:

L: 5.0 cm W: 2.5 cm H: 4.8 cm 

Brought to you by KQ Minerals / Cowboy Crystals 

-Keith Hayes Collection 

Nice blue with a slight purple Covellite plates on Pyrite. Colors are appreciated better in person.

Location: 

Leonard Mine

Butte, Silver Bow County

Montana

Size:

L: 2.1 cm W: 1.0 cm H: 2.5 cm 

Brought to you by KQ Minerals / Cowboy Crystals 

-Keith Hayes Collection 

Cool cluster of intergrown crystal of pyrite. The specimen has sharp terminations with smooth satin faces with a metallic mirror luster. La Rioja region of Spain is well known for its bright, golden and perfect pyrite crystals. 

Location: 

Ampliacion a Victoria Mine

Navajun 

La Rioja

Spain

Size:

L: 2.3 cm W: 1.7 cm H: 2.9 cm 

Brought to you by KQ Minerals / Cowboy Crystals 

-Keith Hayes Collection 

Interesting combination of three minerals. Bournonite is more appreciated towards the back of the specimen with pyrite inclusions. Also, nice quartz inclusions with defined shape. Coming from Ancash, Peru. 

Location: 

Huallanca

Huallanca Dist., Bolognesi Prov.

Ancash

Peru

Size:

L: 5.3 cm W: 3.0 cm H: 4.6  cm 

Brought to you by KQ Minerals / Cowboy Crystals 

-Keith Hayes Collection