Dwarves' Earth Treasures Online
Mandan Pit just east of
Delaware, Keweenaw CO., Michigan
Status: Private Property, but OK to Collect.
. The Mandan Pit is a gravel pit full of rocks and
sand that were carried from nearby sources and deposited by
ancient glaciers. Datolites, "float copper" and few other
interesting rocks can be found there assuming that you're able to
beat anyone to them that is. I hadn't had any good luck with that
site so far until I found one in August 2012 and another one in
August 2015. Most datolites found there are heavily
weathered (bleached), and I had found few small ones crumble away
easily. There are some datolites found with colorful centers still
intact and it's possible to find any datolites protected within
their rock hosts like one I found. It was said that a purple
datolite had been found there.
You can click on
the pictures to see larger pictures.
Jeffrey A. looking
From an old collection.
I finally found this one!
Found hidden in its rock host.
Found by JeffreyA, August 2014