r/FluorescentMinerals

When ever Benitoite is talked about, its inevitably mentioned that its "only found in California", however this is not true. California is and will likely forever be the best/premier locale for it, however it is found in a handful of other places, notably Japan. This example is grainular Benitoite in matrix, though full crystals have been found at a different Japanese locale (Ohmi River) as well. All the tiny little blue specs are Benitoite. This locale is not yet listed on Mindat, however this piece came from an analyzed batch of material confirming it is Benitoite.

Bright blue white Katayamalite on a saturated crimson Albite matrix.

Asked Ai and it said it’s mostly likely Hyalite Opal. Found this in Horn of Africa in a valley. Glows under UV light. Translucent with a slightly waxy/glassy surface Sorry for bad quality will try to get better pictures in the daytime.

Going in order counterclockwise from the largest one being 365nm, I have 340, 320, 310, 295, 275, and 255. The second image is clockwise except 320 and 310 are swapped, idk.

My camera doesn't like all the color, but the scheelite glows red in 295 and 310, purple in 275, and the classic cyan in 255.

The second image is a piece of terlingua-like calcite that has extremely strong reactions compared to the cheap stuff you can buy in bulk. It goes from yellowish with blue phosphorescence in 255 and 275 to purple in 295, white in 310, back to yellow in 320, bright yellow in 340, and finally magenta in 365. That piece also has some kind of white light fluorescence that makes it have a green tint with a very close and strong white light.

There's still more LEDs inbetween wavelengths that I'll have to look out for in flashlights, I don't have a solderer for LEDs. There's 222/230nm, 265nm and 280nm, something around 350nm would be nice too.

295nm is my favorite. It has the most reaction. Thank you!

Just got a UV black light to help expand my rock/ crystal/mineral collection and I noticed parts of this petrified wood I found and cut glow a dim green under UV. Anyone know why?

Thanks!

𝐒𝐩𝐞𝐜𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬:

• Weight : 240 Gram

• Size : 78*67*50 mm

• Shape : Hexagonal

• Color : Pink

• Origin : Skardu, Pakistan

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Calcite rhombohedrons, I like that they flouresce different colors and there is nice rainbows peeking thru on the one.

I went to Carlsbad caverns and used a long wave light. All of the formations fluoresced white as to be expected but I found lots of bright green and orange spots and small lines. Any idea what they could be.

What minerals does it contain? Under narrow wave. Continuing to glow after light go out.

Shown under Shortwave UV. From Sterling Hill NJ. 4"x3".

Had lots of fun doing this today. Almost everything is self-collected from Arizona and the Bay of Fundy, Canada.

There is one Las Choyas geode and two piece of Brilliant wood from Alabama.

As you can probably tell there is fluorite (AZ)

Chalcedony (AZ)

And calcite (Bay of Fundy)

As well as some agates (AZ) and other stuff!

Please be kind as its my first UV display. Taking pictures is not an easy task either!

Under 365nm.

Not sure this 100% fits cause it's not technically a mineral and hard to get a good photo of the crystals themselves especially under the UV making the phone want to focus even less but I was doing an experiment with mixing lando monster and tonic water around 50/50 to get a nice like cyan fluorescence from the combo of the yellow and blue and watching it as it evaporated to see the color change. Now that it's been sitting a while after basically all the liquid is gone I noticed some crystalization begining and hitting it with a UV shows that it's back to straight quinine coloration with the yellow being completely overpowered which leads me to think it's quinine crystals rather than something else crystalizing out especially when looking online and finding that needle like crystals are a common form for quinine to crystalize into. I feel the need to evaporate some tonic water by itself now to see if that will crystalize or if the inclusion of the other residue from the sugar free monster slowed down the last evaporation enough to allow for crystalization and if this will further crystalize as the last residuals of liquid evaporate out. I'm very surprised cause usually stuff has to be decently pure to crystalize out of a solution and there was a bunch of other junk in there from the vitamins and artificial sweeteners and flavors though maybe those are just such low amounts that it didn't matter