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Dwarves' Earth Treasures Online Museum:
Quincy Datolites (Colorful Types)
Quincy Mine, Hancock, Houghton Co., Michigan
Field-collecting Status:  Several Ownerships. Almost all private. No trespassing.

  .    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 maintained by Quincy Hoist Association. The Quincy Mine bisects the Pewabic Lode famed for its colorful datolites. Over time, the 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.

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You can click on the pictures to see larger pictures.

datolite datolite
datolite
Peach to yellow
White and pink

yellow color
datolite datolite
datolite
Bright colors
Red datolite from Quincy! 
Delaware datolites don't have epidote inclusions.


datolite datolite
datolite

Yellow


datolite datolite
datolite
Greenish-blue color
Multi-colored

Pink dottings all over
datolite datolite
datolite
I like seeing datolites in matrix. :)
yellow datolite in copper