Bournonite (“cogwheel”) George Robertson you can see that they

you can see that they feature very eye-catching internal black "phantoms" creating some of the most picturesque patterns

which he referred to as "Windy Ridge"

A beautiful and certainly eye-catching display specimen of Baryte from the famous Bulldog Mine in Creede

large Pyrite pseudomorph after compressed rhombohedra of Siderite which is associated with sharp

This piece really does have it all

Bournonite (“cogwheel”) George Robertson you can see that theyI have to say up front that this piece simply is better than the photos indicate. The HIGH luster of the faces made it difficult to photograph. The specimen is in great shape overall, and the robust crystals with their sharp, well defined surfaces are very hard to find from this mine. The piece is twinned and shows the classic "cogwheel" shape that was made famous by the classic specimens from Cornwall, England. Great quality on the display side, and