Red rock

[jr88]

very hard, hit them together get sparks, find many when working the ground also many other Native American artifacts , these rocks are not native to my area

 

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[smokeythecat]

Looks like fire burned rock, probably quartzite used around the old campfires.

 

[jr88]

Looks like fire burned rock, probably quartzite used around the old campfires.

Just odd that people would carry rocks around to make a fire pit, wish I could find more information, we have no rounds rocks in the area only slate/shale we call it slate (no clue) very shallow soils and tons of arrow heads and quartz

 

[ToddsPoint]

Smokey is right. Quartzite. Here in central IL they used quartzite for cooking food. Heat the rock in fire then put in clay pot to heat water and food. Repeated heating and quenching eventually breaks the rock. I’ve never experimented with heating quartzite but for some reason that was the preferred rock for cooking food in my area.

 

[Gare]

Not sure on the rocks but welcome to treasurenet