sand - coarse sand composed of polished chert grains derived from the Franciscan Complex - set of five tubes

sand - coarse sand composed of polished chert grains derived from the Franciscan Complex - set of five tubes

Brand: Geological Specimen Supply
9.25 USD In stock Buy at Merchant

Chert pebbles from the Franciscan Complex in the Marin Headlands form a barrier bar at Rodeo Beach.

  • The description claims that the chert contains radiolarian skeletons and suggests the rocks were formed near the equator.

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