Dwarves' Earth Treasures: datolites from Quincy Mine of Michigan

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.

Found by Jeffrey Anderson
August 2011


Pinkish color	Some copper inclusions	Copper inclusions

Bright colors	yellow and pink colors	yellow colors

Greenish hue, August 2013	Pink color! August 2013	Greenish hue, August 2013

Multi-chambered August 2016	Multi-chambered August 2016	I found a yellow datolite?! August 2016

Yay, found another yellow one! August 2017	Oh? I found an orange one! August 2018