"Amber" Calcite - Qinglong County, Qianxinan, Guizhou, China

Contributed by: Mark Cole
Date: May 18th, 2026
Locality: Qinglong County, Qianxinan, Guizhou, China (See on Mindat)

Description:
Some new material started showing up on eBay. Not listed in the fluorescent mineral category and, as with many Chinese specimens, no locality was provided but trying to confirm that Qinglong County, Qianxinan, Guizhou, China is correct. But beautiful, nonetheless. Will try to nail down the locale. Nicely phosphorescent, a greenish hue. Fluorescence is basically the same under all wavelengths, LW shown.

Originally posted by Mark Cole on Nature's Rainbows in 2022.

Fluorescence under longwave UV light.

Afterglow after exposure to longwave UV light.

Normal light.

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

• Fluorescence under Longwave (365nm LED) UV light: White
• Afterglow after exposure to Longwave (365nm LED) UV light: Green