Fluorescent Mineral Database

A new secret project! Trying to create a nice Fluorescent Mineral Database (FMDB), which would be searchable by mineral, locality, and luminescence properties. Also making it easy for people to contribute with their own specimens!

Polylithionite, Boromuscovite, and Borocookeite

Contributed by: FMS Admin
Date: Nov 13th, 2025
Locality: Sosedka pegmatite vein, Malkhan pegmatite field, Krasnyi Chikoy, Krasnochikoysky District, Zabaykalsky Krai, Russia (See on Mindat)

Description:
Three unfrequent minerals from the Sosedka pegmatite, Malkhan, Zabaykalsky, Russia. Malkhan is known for its beautiful red tourmalines. But it is also produces polylithionite. It is accompanied by a powdery mass of boromuscovite and borocookeite. Boron replaces here the aluminium in the silicate lattice. UV-C @275 nm

Originally posted by groensteenfreterke on Nature’s Rainbow.

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.
Normal light.
Normal light.

Summary of luminescence responses:

Boromuscovite (Mindat) (RRUFF)

  • Fluorescence under 275nm LED UV light: White
Borocookeite (Mindat) (RRUFF)
  • Fluorescence under 275nm LED UV light: White

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