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serpentine - teaching hand specimen from the Melones fault zone
$ 9.50
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siltstone - teaching student specimens of a Miocene siltstone from the Ridge Basin, California UNIT OF 5 SPECIMENS
$ 4.20
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siltstone - tan siltstone from the Round Mountain Silt member of the Temblor Formation - teaching hand/display specimen
$ 9.50
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tufa - large hand/display specimen from the paleoshoreline of ice age Lake Lahontan
$ 20.00
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