Are any of these southern Lake Michigan beach rocks good for tumbling? I added a little water to some to show the shine. Not sure what they all are, I'm guessing quartzite

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Lake Superior Agate Archives - Page 2 of 3 - The Snob Blog

8 Rocks Found on Lake Michigan Beaches

General : beach and river collecting

Yooperlites. Wait until you see them, you won't…, by K. Barrett, For Awe

Lake Superior - Pictured Rocks National Lakeshore (U.S. National Park Service)

Are any of these southern Lake Michigan beach rocks good for tumbling? I added a little water to some to show the shine. Not sure what they all are, I'm guessing quartzite

4 Lake Michigan beaches to visit for rock hunting

Question: Getting ready for my first tumble, are these beach rocks good candidates? : r/RockTumbling