Michigan Geology | Precambrian | Kona Dolomite

Join us in our next installment as we dive into the fascinating world of Kona Dolomite, a unique carbonate mineral found exclusively in the Kona Hills of Marquette, Michigan. In this video, we explore the origins of this remarkable rock and delve into the reasons behind Kona Dolomite’s distinctive appearance, including its high magnesium content and the presence of iron oxide impurities. Discover how its banded layers provide insight into early Earth's atmosphere and marine conditions, and how exactly dolomite crystals are formed.
#michigangeologicalsurvey #michigangeology #michiganrocks #precambrian #dolomite

[@midlifetravelers6151]

Thank you for the presentation. A great source of information.

[@TogtherWeThrive]

Very interesting! I love to know what I'm looking at when I explore. 🤘🏼

[@upnorthadventureswithccc]

I love Kona Dolomite and new much about it seeing I collect it myself. But you presentation was very much helpful in understanding how it came to Marquette.

[@rogerharris8144]

My Master's Thesis was on drill core samples of the Ogdensburg Dolostone in Uppermost New York State. I was interested to know the process of dolomite crystal formation.

[@canadiangemstones7636]

Anybody interested in learning lapidary would be wise to begin with Kona dolomite, it cuts and polishes easily into beautiful gems!

[@paulkurilecz4209]

I think that there may have been various life forms on Earth prior to the Cambrian Explosion. The problem is that there is almost no fossil record, many of the sedimentary rocks from these earlier periods have been metamorphosed and finally there is the question of the missing rock layers of the Great Unconformity.

[@robertlivingston1634]

The rock outcropping in your thumb nail isn't in Lindbergs pit, there is nothing in the area that looks like that.