Wavellite sphere with unusual crystals
Contributed by: Axel Emmermann
minID:
Date: Jan 24th, 2025
Locality: Kielce County, ?wi?tokrzyskie Voivodeship, Poland (See on Mindat)
Description:
The specimen has a broken wavellite sphere on a quartz matrix. These spheres are common for wavellite but they are usually built from acicular crystals. In this specimen the radiating crystals are far from acicular. They are also colored dark brown due to tar and other included organic compounds. These organic substances are what causes the greenish-tan fluorescence. The fluorescence was photographed in unfocused 405 nm laser light.
Summary of luminescence responses:
Wavellite
- Fluorescence under Blue light (450nm LED): White