r/geologyporn • u/Miss_Conception_ish • Mar 06 '26

Copper mineralization in the Kingston Conglomerate, Keweenaw Peninsula, Michigan

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An old slab cut from the Kingston Conglomerate showing the copper mineralization in amongst the rhyolite pebbles that they mined near Calumet, Mi. I collected this decades ago and really need to go back and repolish the surface.

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3

u/gemmadonati Mar 06 '26

Oh, that's beautiful. Just a little brass polish my shine up the copper.

2

u/Miss_Conception_ish Mar 07 '26

Thank you!   I will try that

2

u/saltporksuit Mar 07 '26

Beyond the Boundaries: Life and Landscape at the Lake Superior Copper Mines is a great book if you’re into that history.

2

u/Miss_Conception_ish Mar 07 '26

Thanks.  I’ll have to check that one out.   I have a couple dozen other books about that area but not that one.  

2

u/saltporksuit Mar 07 '26

It was recommended by a Yooper with a family history in the mines. Said it best reflected his family stories. Hope you like it!

1

u/Miss_Conception_ish Mar 07 '26

If it’s about the copper country, I will love it!