Calcite and Hydrozincite from Davis Shaft, Columbia Mine, Marion, Kentucky
Contributed by: FMS Admin
Date: Mar 8th, 2026
Locality: Columbia mine, Marion, Crittenden County, Kentucky, USA (See on Mindat)
Size: 8 x 16 cm
Description:
Collected in October 2016 during a visit with Mark and John in the late afternoon. In just a few minutes I learned some very valuable clues about what to look for in the day time from these two experts. They checked their finds with a grill cover and UV light in the bed of the truck, quite the setup :-). This piece is from a boulder that I busted that contained a variety of minerals - calcite, galena, sphalerite, barite, and hydrozincite (maybe others). All photos produced with a Nikon D3200, 8 seconds @f5.6, 200ISO, 18-55mm lens at about 30mm.
Originally posted by David Sorrells on Nature's Rainbows.
Summary of luminescence responses:
Calcite (Mindat) (RRUFF)
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue