Poppy Jasper, the Indonesian orbicular jasper from Java and the red orbicular jasper from Sequim, Washington...the case of silicificacion of some fossils like petrified forests, where the starting composition is definitely...silica is most often volcanic, in face most of the petrified forests were buried by volcanic eruptions, typically...volcanic moo Remainsof organisms Dcvicrificacion Wood, bone, Pscudomorphosis aragonite,etc. Orbedjaspers...fossils Even in the case of silicification of petrified wood and other fossils, the role of opal as a precursoris |
Donorojo, Pacitan Regency, East Java Province, Indonesia