Creedite - Qinglong Mine, Guizhou Province, China

Contributed by: Chris Clemens
Date: Apr 29th, 2026
Locality: Qinglong Mine (Dachang Mine), Dachang Sb ore field, Qinglong County, Qianxinan, Guizhou, China (See on Mindat)
Size: 57 x 22 x 65 mm
Weight: 50 g

Description:
Radiating sprays of transparent, gemmy prismatic creedite crystals on a bed of white quartz druse. This specimen is from the Qinglong Mine (Dachang Mine), Qinglong County, Qianxinan Autonomous Prefecture, Guizhou Province, China. The creedite is fluorescent under all UV wavelengths, showing a bright blue to blue/white response with phosphorescence.

Originally posted by Chris Clemens on Nature's Rainbows in 2017.

Fluorescence under shortwave UV light.

Afterglow after exposure to shortwave UV light.

Fluorescence under longwave UV light.

Afterglow after exposure to longwave UV light.

Normal light.

Normal light. Full specimen.

Summary of luminescence responses:

Creedite (Mindat) (RRUFF)

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue
• Afterglow after exposure to Shortwave (254nm Lamp/Mercury) UV light: Blue
• Fluorescence under Longwave (365nm LED) UV light: Blue
• Afterglow after exposure to Longwave (365nm LED) UV light: Green