Chalcopyrite US Minerals This is a superb specimen

This is a superb specimen from one of the most storied and well-known districts in Colorado

This specimen hosts several sharp

it’s a cool oddity that would make a nice addition to a Bolivian suite

I acquired just a few of these specimens in 2011 and I honestly thought them to be a fairly common and unassuming associated species i

and certainly one of the most eye-catching

Chalcopyrite US Minerals This is a superb specimenThe Alice Mine is one of the most classic of all the Colorado localities for Chalcopyrite. It is renowned for its superb Chalcopyrite specimens, exhibiting some of the finest twins for the species extant. The Chalcopyrites from this mine are a staple of any good Colorado mineral collection. This specimen features good sized, sharp, metallic, brassy gold colored twinned crystals of Chalcopyrite coated by micro epitaxial cubic Galena(?), as there is