Dragon Minerals - Update November 24, 2018

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27874: Microlite, Cassiterite, Fluorite, and Tourmaline - $100
Stak Nala, Skardu District, Gilgit-Baltistan, Pakistan
Small cabinet - 7.2 x 5.0 x 3.5 cm (2.8 x 2.0 x 1.4 inches)
Weight - 122 grams (0.27 pounds)
Specimen status: Available   Send email to order

Stak Nala, Pakistan is best known for its tourmaline crystals with sharp, colorless terminations, but the region also yields some other interesting things. For example here we have an incomplete, mostly dark tourmaline crystal wrapped with a feldspar and small tourmaline coating. Most interesting, however, is the complete, deep green, translucent to opaque fluorite crystal (fourth and fifth photos), and a few small but sharp microlite crystals (final photo). The back of the specimen hosts a 9 mm wide cluster of jet black cassiterite crystals. The fluorite displays very bright green fluorescence under shortwave UV (less bright, but still green, under longwave UV). When the UV source is removed, the fluorite shows a very distinct phosphorescence as well. An interesting pegmatite association specimen, with lots to explore.

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