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Dwarves' Earth Treasures Online Museum:
Drexel(Drexal) Datolites
Drexel(Drexal) Mine, Delaware, Keweenaw CO., Michigan
Field-collecting Status: OK to collect at own's own risk.

    Drexel (Drexal/Drexil?) Mine is obviously a failed attempt to locate the copper rich lobes since the mine dump is very small and the datolites started showing up from that mine dump recently. While most datolites are white to opaque gray, few datolites are similar to those of Delaware (pink color) found there and it happens that Drexel Mine is just a mile (or two?) west of Delaware Mine and Connecticut Mine. Some datolites also include some copper inclusions. I managed to find a few datolites at one spot at Drexel mine and there may be few more waiting to be found. As of August 2010, few people appeared to have hit on a big nest of larger datolites at further end of the piles but most seem to have come up white to gray with some greenish coloring while I'm still finding small but colorful datolites at one different spot. There are some faint yellow datolites from one side so it's obvious that the copper miners dug out at least three seams of datolites during their mining expeditions. As of August 2021, I still haven't found any new datolites since August 2018 even few people still find datolites there from time to time. I bought a pair of yellow datolites that was found there in 2020.

You can click on the pictures to see larger pictures.
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Drexal Mine
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Datolite Found!


A Special Find at Drexal Mine, Reddish-orangish datolites with bit of yellow background
found in a "mudrock" rock by jeffrey Anderson, August 2012

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Datolites in-situ the rock
Close-up view of datolites

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Other datolites found by Jeffrey Anderson at Drexel Mine

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Small Colorful Datolites Found by Jeffrey A.
August 2008-2012

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Orange double-chambered datolite
found by JA, August 2009
Deep red datolite!
found by JA, August 2011
Yay, red datolite!
Found by JA, August 2015
(last colored datolite I've found)

datolite

datolite datolite
Typical white multi-chambered datolite,
Found by Jeffrey Anderson, August 2008
Has anyone ever found 
a red & yellow datolite at Drexel?!?!
Found by Jeffrey A., August 2008
Mustard Yellow
(bought from a dealer who
found this pair)

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Rare datolite with red dots.
(I bought that one)
Large(finally!) datolite with greenish hue,
found by JeffreyA., August 2010
Copper inclusions
found by JA, August 2010

datolite

datolite

datolite
Looks like Delaware datolite
found by JeffreyA., August 2007
Copper inclusions
found by JA, August 2010
Rotten green datolite
found by JA, August 2010

datolite

datolite

datolite

Typically gray datolites
found by JA, August 2010
That is where deep red datolite came from.
found by JA, August 2011
Red datolites in matrix
found by JA, August 2011

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datolite

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found by JA, August 2013 "Smoke Ring"
found by JA, August 2013
Datolite completely
replaced by copper
Found by JA, August 2013

datolite

datolite

Pink-dotted datolites in matrix
August 2010
Bought from a dealer,
rare light yellow color with copper freckles.
Found by Jeffrey A.
August 2015

datolite
August 2018 Orange to gray with dots
found by JA, August 2010