Calcite on Quartz - Chihuahua, Mexico

Contributed by: Mark Cole
Date: Mar 28th, 2026
Locality: Chihuahua, Mexico (See on Mindat)

Description:
Originally posted by Mark Cole on Nature's Rainbows in 2015.

Fluorescence under shortwave UV light.

Normal light.

Normal light. Closeup

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red