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Dwarves' Earth Treasures Online Museum:
Quincy Datolites (White Types)
Quincy Mine, Hancock, Houghton Co., Michigan
Field-collecting Status:  Several Ownerships. Can dig only at a narrow public land.
As of August 2021, "No Treapassing" signs are posted at the gates so I'm
not sure if that narrow public land can be accessed.

  .    The "Old Reliable" Quincy Mine is considered a historical landmark of the Copper Country, a nickname for copper producing Keweenaw Peninsula, and many of the original buildings are still standing and preserved. The Quincy Mine bisects the Pewabic Lode famed for its colorful datolites. Over time, datolites had been found in the piles especially when they were bulldozed or hauled away for rock crushing. White, green, yellow, pink, red, peach, salmon, and orange are the examples found there and some come with copper specks. It's safe for me to say that the miners hit several different seams of datolites, resulting in few different varieties. This page presents the "white type" examples of datolites and some contain faint yellow to pink hues.

Click on for larger map.
You can click on the pictures to see larger pictures.
datolite
Found by Jeffrey Anderson
August 2011
datolite datolite datolite
Pinkish color
Some copper inclusions
Copper inclusions
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Bright colors
yellow and pink colors
yellow colors
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Greenish hue, August 2013
Pink color!
August 2013
Greenish hue, August 2013
datolite datolite datolite
Multi-chambered
August 2016
Multi-chambered
August 2016
I found a yellow datolite?!
August 2016
datolite datolite
Yay, found another yellow one!
August 2017
Oh? I found an orange one!
August 2018