Prehnite

Prehnite is seldom fluorescent; typically blue under longwave UV light.

Fluorescence under longwave UV light.

Normal light.

Fluorescent prehnite in my collection:

May 11, 2026

A soup of Franklin minerals. Mostly nasonite and prehnite, I think mixed together, fluorescent...

Mar 21, 2026

A nice example of “Parker Shaft Soup” mix of minerals. The two most obvious minerals are...

Oct 12, 2024

A very nice rosette of light green prehnite crystals surrounded by quartz. Looks like a flower!...

Oct 2, 2023

A little nodule of roeblingite, showing its classical coconut-flesh appearance. Fluorescent...

The best midwave mineral: agrellite! Very typical, bright pink fluorescence under shortwave and...

AlbiteFluorescence under midwave and shortwave UV light.Normal light.Fluorescent albite in my...

AnalcimeFluorescence under midwave and shortwave UV light.Normal light.Fluorescent analcime in my...

Anthophyllite.SC301 – Anthophyllite, Clino-suenoite, and Tremolite from the International Talc...

AragoniteSC343 – Aragonite from Sant’Agostino di Coli, Emilia-Romagna, ItalyFluorescence under...

Axinite -- group with Axinite-Mn, or manganaxinite, axinite-Mg, and axinite-Fe.Fluorescence under...

Baratovite: a rare mineral, fluorescence bright blue under shortwave UV light.Fluorescence under...

BaryteSC1112 – Baryte from the Meikle Mine, Nevada, USAFluorescence under longwave UV light.Normal...

BityiteFluorescence under midwave and shortwave UV light.Normal light.Fluorescent bityite in my...

Calcite is, perhaps, one of the most colorful mineral under UV light. It can fluoresce virtually...