While the team was busy elsewhere
up the slope I went downhill and encountered this large boulder,
apparently composed of ussingite and still marked by an old geological
survey stick. Pronounced "oozing-ite", it was discovered
by a geologist named Ussing. Here are some pictures
of fluorescent ussingite from Greenland.
I was pretty excited because there
were various fluorescent minerals mixed together with the ussingite
such as polylithionite and analcime, as well as sodalite. But
it was difficult to break off decent pieces. Then I saw the largest
piece of polylithionite that anyone discovered on the trip. I
succeeded in breaking it off with a hammer - for the rest of
the trip it was referred to as the "monster poly".
It's a solid 9 inches long x 5 inches wide and fluoresces a pale
Center: big polythionite
from Taseq West
Getting a big polylithionite specimen
safely home was tricky. I'm happy to report that it's home and
all in one piece. Pictures of it will appear in the future. It
was one of my best collecting moments.