Dwarves' Earth Treasures Online
Museum:
Clark Datolites
Clark Mine, Copper Harbor,
Keweenaw CO., Michigan
Field-collecting Status:
Under Forestry Management. OK to Collect but at one's own
risk.
The Clark Mine is one of most well known and most
visited mine for the datolites that it was mentioned even in many
old books on collecting in Michigan. Even today, it is still being
visited by many people. It is funny how the Clark mine is better
known for its datolites instead of copper, and like Star, Montreal
and other nearby mines, Clark Mine is one of those early mines that
opened during 1840s to 1860s period. They did not produce sufficient
supply of copper that they were abandoned quickly.
With an exception of illegal attempt at
bulldozing (he was caught), it's one of very few mines that I know
of that had not been bulldozed or hauled away for rock crushing.
Many datolites from Clark Mine are white with an appearance of many
datolite nodules being squeezed together. Few orange datolites had
been found in some spots around Clark Mine (not counting the Clark
Swamp Adit).
You can click on
the pictures to see larger pictures.
Specimens bought by JA
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| Typical datolite from Clark Mine |
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rare orange datolites
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