Dolomite on sulfides

Dolomite on sulfidesA wonderful display specimen from the famous Black Cloud mine featuring razor sharp, vitreous rhombohedra of cream colored Dolomite some of which are oriented into spherical aggregates which are sitting atop black Sphalerite, silvery Galena and golden Pyrite matrix. Excellent quality and wonderful aesthetics. The Black Cloud Mine was one of the most famous specimen producing locales in Leadville and was one of the last operating mines in Colorado when

Specimen # BOL711B35

Over 60 years ago a second

and in better condition than most from this mine

The beetles look like they're marching almost like ants

that it completely redefined Andorite as a crystallized species

An eye-catching specimen hosting a sharp

they would see small red reflections which are proof to the presence of manganese in the crystals

They’re very sharp

Specimen # BOL711B36

Baddeley found an unusual mineral and sent samples back to London for analysis

This is a wonderful thumbnail specimen featuring a striking doubly-terminated 7 mm crystal of Brookite that is gracefully set among sharp

Good green Garnet specimens are rarely seen in pieces this size