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UV MineralsPetalite long wave

7th Feb 2017 13:19 UTCGiuliano Bettini

Hi all!

I've read somewhere (do not remember where) "petalite UV luminescence (long wave): light pink".

To me it appears dark pink, probably I make some mistake.

Does anyone know how is it?

Many thanks (I am inexperienced)

Giuliano.

Image FoV: some cms.

(At the left side: petalite)

22nd Feb 2017 13:54 UTCGiuliano Bettini

As I said I'm not an expert on minerals in UV light. Nor photography in UV light. To try to get accurate color I did on my Canon IXSUS 115 HS a "white calibration", following the instruction booklet. However, being inexperienced, I tried to do an empirical verification. For comparison I have grouped various samples of different colors, and I photographed them all together. Here's the image. From top left appear:

pink, the specimen with petalite;

white, aragonite of Castiglioncello (Livorno, Tuscany);

blue, a fluorite crystal on hematite (Rio Marina, Elba);

red, a fluorescent sample of Boccheggiano (Italy), the so-called “strontian aragonite” or “aragostrontianite”, a carbonate material fluorescing red under UV long wave.

Dimensions: the specimen with petalite is 8x6x3cm.

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