Collecting Fluorescent Minerals - The Basics, Where to Find Them, and How to Collect Them
Rock collecting is a pretty easy hobby to get into - buy a hammer, find a pile of rocks, and you're rock collecting.
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Sodalite (Yooperlite Rock) - Greenland
$55.00 USD
SKU: MSG1432
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Sodalite from Greenland that has been worn and tumbled by water and glacial activity.
Similar to the recently popular Yooperlite rocks, Greenland has its own Yooperlite rocks (but we just call them sodalite). Glaciers eroded sodalite out of the Ilimaussaq Complex and carried them towards the ocean, grinding and polishing all the way. Many were deposited in the glacial moraines near the village of Narsaq. Lots more can be found on the pebble beaches in the fjords cutting through the complex. The sodalite is brightly fluorescent under LW (365nm).
When split, many exhibit a strong tenebrescence after exposure to shortwave (SW) UV (see animation below). This is (so far) a Greenland exclusive. Minerals include sodalite, arfvedsonite, aegirine, eudialyte, and probably a few others, all in a syenite type rock.
What is Tenebrescence? (All about Hackmanite - Hint: it's not fluorescence)
Minerals which are capable of this reversible color change by exposure to UV (or other energy sources), without any change in their essential composition, are said to be tenebrescent
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Tugtupite - A Rare Fluorescent Mineral from Greenland
Tugtupite is the most widely known fluorescent mineral from Greeenland. It is used in making beautiful tugtupite cabochons.
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