SC1305 – Chalcedony & Calcite from Nebraska, USA
Calcite and chalcedony, fluorescent red and green under UV light, respectively. The calcite is...
Calcite and chalcedony, fluorescent red and green under UV light, respectively. The calcite is...
A complicated rock. The main actor is the light gray, fibrous mineral, fluorescent light green...
A rare mineral from its type locality: miserite. The top half of this large specimen is rich in...
Elongated zircon crystals in a pegmatite matrix containing albite, wollastonite, green diopside...
Bityite mica flakes on matrix, fluorescent yellow/green under shortwave UV light, together with...
Large cerussite crystal; fluorescent bright yellow under longwave UV light.Locality: Mibladen, Aït...
An aggregate of small witherite crystals. Fluorescent bluish white, greenish, and white under...
A little specimen of turneaureite, a rare apatite group mineral, associated with calcite. They...
An interesting example of cuspidine and hardystonite, together with a touch of calcite and the...
A nice display of cuspidine on a matrix of calcite, willemite, and black franklinite. Under...