Calcite - Kamioka Mine, Gifu Prefecture, Japan

Contributed by: FMS Admin
Date: May 7th, 2026
Locality: Kamioka Mine, Hida City, Gifu Prefecture, Japan (See on Mindat)
Size: 3 inches

Description:
Not many fluorescents seem to come from Japan. This one is a very nice, though small, calcite from the Kamioka Mine in Kamioka Town, Nishiyoshiki County, Gifu Prefecture, Japan. Though the piece is much brighter in midwave, I think the subtle response in shortwave is much more dramatic.

Originally posted by Fire Viper on Nature's Rainbows in 2018.

Fluorescence under shortwave UV light.

Fluorescence under midwave UV light.

Fluorescence under longwave UV light.

Normal light.

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

• Fluorescence under Longwave (365nm LED) UV light: Red
• Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Red
• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red