Email Me

Dwarves' Earth Treasures Online Museum:
Isle Royale Datolites
From the old mines and offshore areas of Isle Royale, Michigan
Field-collecting Status:  National Park, No Collecting!
Isle Royale datolites can be obtained only from old collections.

.      It appears that few people visited Isle Royale island in the past and collected some datolites from the mine pits before the federal government placed a ban on any rock collecting on the island. The old collection of datolites from the pits of Isle Royale recently showed up and I was able to obtain few datolites from it. Most datolites seem to be white with pink centers and few coming with orange, salmon and yellow colors.
    Also, some people collected a bunch of datolites while scuba-diving before the ban was in full effect and many colorless to light green datolites with prehnite inclusions were collected while few bright-colored datolites were found.

You can click on the pictures to see larger pictures.

datolite

Supposedly collected before the ban
 on rock collecting was enforced.
Its rough back did not match with any
datolites from Keweenaw Peninsula.

One of many datolites collected during
the scuba diving offshore Isle Royale
datolite

datolite

datolite

datolite


datolite

Offshore of Isle Royale Yellow color