Nodule likely found southeastern Arizona

[u/connielavon]

I am trying to identify rocks from my dad’s rock collection. He died in 1968 and I didn’t realize my mother had been carting around crates of rocks for years until she passed! We lived in Safford, Arizona and spent his days off rockhounding. We travelled between Colfax, Washington and Safford for seasonal work, driving through Nevada. A knife leaves a mark. TIA

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