Hunting for Yooperlite rocks on Lake Superior

in hive-109690 •  5 months ago 

We didn’t find any Yooperlites last night but we had a late start after having a big fish fry.

We will try again tonight.

We were out looking at a few good areas this morning…

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Yooperlite / Sodalite : sodalite-bearing syenite source of this material is located in Canada, specifically the Coldwell Alkaline Complex in Ontario, and that fragments of this complex were transported to their approximate present-day location by continental glaciation, further slightly moved, concentrated, and somewhat wave-polished by modern Lake Superior. Indeed, the presence of minor orange-red natrolite (alteration of nepheline) in these clasts argues strongly for a Coldwell Complex origin (Mitchell and Platt, 1982).

Source: https://www.yooperlites.com/yooperlite-story.html

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A few samples under UV Blacklight Flashlight :

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