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Dwarves' Earth Treasures Online Museum:
South Cliff Datolites
South Cliff Mine, Keweenaw CO., Michigan
Field-collecting Status:  Ownership Unknown, competely buried,

     .    I don't know that much about the South Cliff Mine which is next to fissure-based Cliff Mine which is better known for its copper and silver specimens. It was plowed once or twice during the Keweenaw Mineral Week and many datolites have been found. I tried to search but never found any except greenish one. As of August 2015, I checked and someone dumped so much dirt over the mine piles as part of Cliff Reclaimation projecd. So everything's buried under so much dirt. Apparently, most datolites are white, rarely with pink, gray and yellow hues.

 Click on to see larger map
datolite datolite
Faint yellow hue
Found by Jeffrey Anderson,
South Cliff, Keweenaw Co., Mi
with prehnite and calcite, August 2009