Tyuyamunite from Mexico
Contributed by: Axel Emmermann
minID:
Date: Jan 24th, 2025
Locality: Margaritas No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico (See on Mindat)
Description:
This is a calcium uranyl vanadate. The vanadate ion has some proper fluorescence of it\'s own, so it overlaps with the familiar uranyl fingerprint. This makes it difficult to say anything sensible when looking at the emission spectrum. The fluorescence was photographed in 405 nm laser light. The white light photo was taken in halogen light. It\'s not a very desirable specimen but it is representative for the species.
Summary of luminescence responses:
Tyuyamunite
- Fluorescence under 405nm blue laser: Green