Scheelite, with Calcite and Fluorite - Hunan, China

Contributed by: FMS Admin
minID: UC3-XHW
Date: May 16th, 2026
Locality: Chashan Mine, Xianghualing Sn-polymetallic ore field, Linwu Co., Chenzhou, Hunan, China (See on Mindat)
Size: 27 x 14 x 28 mm

Description:
Nice little specimen from the Chashan Mine, Xianghualing Sn-polymetallic ore field, Linwu Co., Chenzhou, Hunan, China.

Interestingly, the scheelite responds quite differently under two UVB (midwave UV) wavelengths; under 311 nm it is reddish-orange, and under 306 nm, it is pinkish white. The calcite responds only to midwave; it glows a very weak reddish violet; and the fluorite glows a very weak blue, noticeable mostly under longwave (not shown here - not much to see under LW except the weak response of the fluorite).

Originally posted by Frédéric Messier Leroux on Nature's Rainbows in 2021.

Fluorescence under midwave (311 nm LED) UV light.

Fluorescence under midwave (306 nm LED) UV light.

Fluorescence under shortwave UV light.

Normal light.

Summary of luminescence responses:

Scheelite (Mindat) (RRUFF)

• Fluorescence under Midwave (305nm LED) UV light: Red
• Fluorescence under Shortwave (255nm LED) UV light: Blue