tumble polished petrified wood
last edited: 11/16/17 number of photos: 10
Petrified wood is a cryptocrystalline form of
Mineral information on quartz
Technically, petrified wood is really a form of jasper.
tumble polished petrified wood, northern Arizona: A B
polished specimens of petrified wood: A B C D E F G H
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Just credit photos to R.Weller/Cochise College.