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Dwarves' Earth Treasures Online Museum:

Datolites of Calumet & Hecla Mines,
Calumet & Larium, Houghton Co., Michigan

Few datolites have been found by accident when the rockhounders were digging for agates at C & H #21 mine dump.
The datolites are generally brown to white, sometimes with red spots.
Few white datolites with copper freckled centers were found at one C & H Mine (which mine through?)

  You can click on the pictures to see larger pictures.

datolite
datolite
Calumet & Hecla #21 Mine
near Larium, MI
Calumet & Hecla #21 Mine
near Larium, MI
Calumet & Hecla #21 Mine
near Larium, MI

datolite datolite
Greenish tone.
A surprise find while dugging
for agates at C & H #21 mine
August 2015
C & H Mine (Calumet & Hecla),
(which mine?)
near Larium, MI
Chambered with copper inclusions
Calumet & Hecla #21 Mine
near Larium, MI