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Zusätzliche Informationen: Obsidian ist ein natürlich vorkommendes vulkanisches Gesteinsglas
Zusätzliche Informationen: In der Green-River-Formation im Südwesten Wyomings
which then solidified and condensed into chondritic masses
revealing the well-preserved growth rings of the tree
Beschreibung: Transparenter
Versteinerte Holzscheibe | Arizona, USA Minerals Zusätzliche Informationen: Obsidian ist einOrigin: Arizona, USA Age: Triassic, 220 million years Size: H61cm W74cm D4cm Weight: 30. 0 kg Description: Dating from the Triassic period (approximately 220 million years old), the Araucarioxylon arizonicum has been cut in cross section and polished to reveal the rich colors that have made this site so famous, while carefully preserving the texture of the edges. Additional Information: Petrified wood is fossilized wood in which all organic matter has
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