Quantum redactiones paginae "Lapis obsidianus" differant
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[[Fasciculus:ObsidianOregon.jpg|thumb|Lapis Obsidianus]]
'''Lapis Obsidianus'''<ref>[http://books.google.at/books?id=6EIPAAAAQAAJ&pg=PA186&lpg=PA186&dq=lapis+obsidianus&source=bl&ots=DrfKL53FGn&sig=HhAvgzJlLOefMQryDscI1OdPPIQ&hl=de&ei=xE6YTt7yHoTNsgbxpqycBA&sa=X&oi=book_result&ct=result&resnum=5&ved=0CD8Q6AEwBA#v=onepage&q=lapis%20obsidianus&f=false A natural history of fossils (1757)]</ref> sive '''Lapis Obsianus'''<ref>Vide Plinius, nat. hist. 36,196-197</ref> vel '''Achates Islandicus'''<ref>[http://books.google.at/books?id=Lx5DAAAAIAAJ&pg=PA138&lpg=PA138&dq=lapis+obsidianus&source=bl&ots=JpQlTfnyOe&sig=L84AMzHElck4UHJ6BAU9XpT3vPI&hl=de&ei=xE6YTt7yHoTNsgbxpqycBA&sa=X&oi=book_result&ct=result&resnum=7&ved=0CEoQ6AEwBg#v=onepage&q=lapis%20obsidianus&f=false Handbuch der Oryktognosie (1821)]</ref> est [[vitrum]] [[Mons ignifer|vulcanicum]], quod lava rapide refrigescenda ortum est. Secundum [[Plinius Minor|Plinium]] nomen trahit a quodam "Obsio" sive "Obsidio", qui primus lapidem in quaedam [[Aethiopia]]e regione invenerit:
::''In genere vitri et obsiana numerantur ad similitudinem lapidis, quem in Aethiopia invenit Obsius, nigerrimi coloris, aliquando et tralucidi, crassiore visu atque in speculis parietum pro imagine umbras reddente.
== Notae ==
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