This is a large specimen consisting of sky-blue plumbogummite (white light) psuedomorph that has replaced an intergrown cluster of...

This is a large specimen consisting of pale sky-blue plumbogummite psuedomorph that has replaced an intergrown cluster of hexagonal...

An unusual find in Dec 2021, hard to say to be beautiful but strange enough indeed. As chalcanthite is a simple copper sulfate mineral,...

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

Large, brightly fluorescent, pseudo-octahedral scheelite crystal on a matrix of non-fluorescent muscovite plates. From Mt Xuebaoding,...

Delicate casts of light blue triangular plumbogummite crystals growing over/after decayed hexagonal green pyromorphite crystals, a few of...

Purple octahedral fluorite crystals in matrix with a second generation of colorless cubic fluorite atop. The octahedral crystals...

A seldom seen fluorescent mineral - Kuangshan Town, Lengshuijiang City, Loudi City, Hunan Prov. - under longwave. Photo courtesy 沈洪涛

Fluorite and calcite combinations from China are pretty common. This one however, just seems different. Perhaps it's that the calcite...

There was a recent post in the FMS Fluorescent Mineral Group on Facebook discussing the fluorescence of scheelite under LW UV (UVA). I...