What is this? Not magnetic(doesnt stick 2 magnet) HelpID

[JUDDZILLA]

This is very hard. Doesn't stick to magnet. Found in Allentown Pa. Any help identifying would be appreciated. Thanks

 

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[Eu_citzen]

Do a streak test - rub it against a unglazed piece of porcelain. What colour do you get?

Could be hematite - you'd get a reddish streak.

 

[Dknight34]

Probably Ironstone. A sedimentary rock. Hard to say from photos, but look with a 10X loupe and see if you can see indiviual grains. Common in PA. It woul not likely be magnetic.

 

[Eu_citzen]

Doesn't looks like any iron stone I've ever seen. You have that kind of massive iron stones out in the US? Pics?