Tenebrescent sodalite (aka hackmanite) from Greenland is perhaps the most tenebrescent mineral in the world.
The Minerals of Greenland and the Localities are a major focus of this web site. Over 200 minerals have been identified from the Ilimaussaq Complex, South Greenland - and over 15 are only found here. Ilimaussaq is the type locality for dozens of alkaline minerals including tugtupite, ussingite, polylithionite, sorensenite, and more. Rare minerals such as chkalovite, leucophanite, catapleite, villiaumite and dozens more add to the allure of this remote "geologist's mecca".
In the past several years this area has become a world-class locale for fluorescent minerals and deeply tenebrescent sodalite hackmanite.
I specialize in fluorescent minerals
from this remote locale
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High Power 365nm LW LED Display Lamp - Using state-of-the-art power LEDs you can build a very powerful longwave lamp with very pure UV output from a concentrated UV emitter. Super power...
26 Watt Shortwave Display Lamp - build a cheap (compared to retail) but powerful lamp for your display. Our easiest DIY project. Cost to build will range from $235 to $280, or less if you can score a cheap Trannie w/broken glass somewhere.
Portable UV Field Lamp - A very detailed "do-it-yourself" guide to building your own battery-operated field lamp (AC or DC operation). You can build a 9-watt or an 18-watt UVC (shortwave) light every bit as powerful as most lamps on the market today, and a heck of a lot more rugged (I use them in Greenland). There are two sections: one describes the basics of building the lamp (9 or 18 watt) using a 9w lamp as an example, the other has pics of an 18-watt build.
UV technologies includes topics covering the science behind fluorescent minerals, tenebrescence, phosphorescence, UV wavelengths, UV filters, and fluorescence activators. Also included are technical discussions of display cabinets, lights (buying and building), lighting techniques, as well as other tips and tricks to make the fluorescent mineral hobby more enjoyable.
Five major photo galleries are divided by continent and sub-locale. Greenland is heavily represented; I have spent a huge amount of time collecting there, and the variety of fluorescent minerals found is amazing. A single gallery - with four subsections - is dedicated to the Ilimaussaq Complex.
Browse the photos simply for their beauty, or use them to help ID a mystery piece. And please, if you spot any errors, or have a suggestion about an ID on some mystery mineral, contact me.
One aspect of the fluorescent mineral hobby I enjoy is field collecting. I take every opportunity to visit a new collecting locale. Over the years I've visited some very unique places, and have learned quite a bit about the local geology. Locality reports posted here are from my own travels, or written by friends most likely on the same trip.
From 2001 to 2011 I arranged Fluorescent Mineral Tours for groups. Several pages describe many of the new minerals, the geology, and new localities I found on my trips to Greenland and the Ilimaussaq Complex.
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