Petrified Wood Photos           
Cochise College                                                                                                                                
Photos of Gemstones
Translucent Gemstones

Geology Home Page
Roger Weller, geology instructor               

tumble polished petrified wood

Petrified Wood 
last edited:  11/16/17    number of photos: 10
Petrified wood is a cryptocrystalline form of                                    
quartz, SiO
Mineral information on quartz
Technically, petrified wood is really a form of jasper.

hardness: 7


polished petrified wood
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.
copyright 2017-R.Weller