A big chunk of calcite, with some interesting colors under midwave UV light: form yellow to orange and red to violet!
This material is currently being marketed as “Med-City Calcite”. It is said to be coming from the excavation works for the Mayo Clinic expansion currently undergoing in Rochester (2025/2026).
This material is currently being marketed as “Med-City Calcite”. It is said to be coming from the excavation works for the Mayo Clinic expansion currently undergoing in Rochester (2025/2026).
Fluorescence under midwave UV light.
Fluorescence under normal light.
Original label.
