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Dwarves' Earth Treasures Online Museum:
Connecticut Datolites
Connecticut Mine, Delaware, Keweenaw CO., Michigan
Field-collecting Status:  OK to collect (supposedly owned by local lumbering company)

    The Connecticut Mine was a western expansion of the Delaware Fissure and like Delaware mine, the Connecticut mine produced very little copper but lot of calcite. There are few types of datolites: the classic ones are are opaque white sometimes with red & orange colors, and most datolites from other spots around the mine dumps are white.  As of August 2014, I found a large rock containing several datolites and I broke it down to extract them. They turned out to be faint orange-colored. :) As of August 2016, the rocks are being hauled away to be used on the lumbering roads.  August 2018, Following the trail of tiny datolites, I hit on a scattered nest of datolites including a 20 pound rock I referred as "datolite ore" due to many small datolites in it and it turned to contain minute amounts of\ silver. August 2021, I found two more datolites as I continued to expand that hole I dug but couldn't find more.


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You can click on the pictures to see larger pictures.

datolite datolite datolite
I was surprised to find
this pair on the parking area
August 2010		 I don't know how to describe this color
but it might be a rare color
August 2009		  August 2015
datolite datolite
From old collection
Interesting details
datolite

One of several faint orange-hued
datolites obtained from
a single big rock,
August 2014
 One of several faint orange-hued
datolites obtained from
a single big rock,
August 2014

One of several faint orange-hued
datolites obtained from
a single big rock,
August 2014		 One of several faint orange-hued
datolites obtained from
a single big rock,
August 2014		 faint orange tint
August 2019
faint orange tint
extracted from a silver-rich
"datolite ore" rock.
August 2019 		With pink copper inclusions
August 2021
 Colored by numerous red dots
August 2021
August 2018 August 2019
 August 2018
datolite

August 2025