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Opalized Wood. Petrified wood in which the organic material was replaced by opal, instead of other more common silicates like quartz. A cross section was cut to show growth rings. Colorado, USA.
Opalized Wood. Petrified wood in which the organic material was replaced by opal, instead of other more common silicates like quartz. A cross section was cut to show growth rings. Colorado, USA.
Filename: GLMFL772.jpg
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