MSG1202: Tenebrescent Blue Sodalite (Hackmanite) from Greenland

Description

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Tenebrescent Blue Sodalite (Hackmanite)
Tunuliarfik, Ilimaussaq Complex, Greenland
3” x 2 3/4" x 2 1/2”, 9.1 oz
The sodalite on this piece changes color when exposed to UV (SW), darkening to a purple - a unique hue compared to other Greenland sodalites due to the natural blue coloring. Under LW the bright orange fluorescence is unmistakable, while under SW it starts out orange but quickly shifts to a rusty color due to the tenebrescence (see animation below to view the tenebrescent change). Many of the pieces from this locality within the complex are associated with a relatively bright fluorescent feldspar (in syenite). Like other feldspars, it fluoresces a magenta color. There are very attractive arfvedsonite crystals throughout the specimen. Bright green fluorescent areas are uranyl activated.
Winning bidder: Make sure to right-click and print (or save) ID card located below for your records
Mineral in image above shown under Shortwave UV light
Mineral in image above shown under Longwave UV light
Animation above showing deep tenebrescence
Dollar bill showing size of mineral
A personal note from Mark Cole, MinerShop
"As many of my followers have noticed, I (Mark) have retired from active sales. My daughter, Valerie, has joined the MinerShop crew and will be taking over our sales. She has assumed my large inventory of Greenland and other world-wide minerals, has learned to take the same great photos you've come to expect, and will offer the same great service you've gotten used to. She grew up around these minerals and, thankfully, got the glow-bug herself at a young age. A father's dream to have one of his children appreciate our hobby, insuring a home for his lifetime's passion. Please support her in this transition, and be assured I'm behind her every step of the way."
Shipping and Other Information
All packages will be shipped via USPS Priority Mail.
International customs fees, import duties and restrictions are the responsibility of the buyer.
Pictures and Representations:
Specimen colors reproduced as accurately as my camera and monitor allow (and are subject to the way your monitor displays colors). Sizes are approximate.
Please use dollar bill behind specimen and actual measurements to form a mental picture of the size.
Measurements show the widest dimension of each side.
Some images may be enlarged to show detail. Refer to sizing pic for proportional size
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