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Known to geologists for nearly 200 years, the Ilímaussaq alkaline complex in South West Greenland has only recently become recognized as a world-class fluorescent mineral locale. The two principal fluorescent minerals here, sodalite and tugtupite, are present in many distinctive varieties, some of which are also photochromic or tenebrescent.
Fluorescent colors range from pastel pinks through lavender, vibrant reds and orange. Together with associated fluorescent minerals they provide specimens in a bewildering variety of patterns and hues. |
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Specimens of sodalite (orange) and tugtupite (red) from Ilímaussaq, Greenland, showing different fluorescent responses to different UV sources. |
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