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Start Over Collection place Northeastern California Materials Igneous rock
Hearst Museum object titled Hammer, accession number 1-63577, described as Discoid, diabase; old conglomerate containing decomposed lava; identified by Professor Howel Williams
Hearst Museum object titled Hammer, accession number 1-62850, described as Discoidal. Meta-volcanic bed rock; identified by Prof. Howel Williams.
Hearst Museum object titled Hammerstone, accession number 1-63737, described as Hammerstone, dense green meta-volcanic rock
Hearst Museum object titled Pestle, accession number 1-62804, described as Barrel shape. Plutonic rock, probably gabbro; identified by Prof. Howel Williams.

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