Video: Dab tsi yog qhov tshwj xeeb ntawm Obsidian?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Obsidian , igneous pob zeb tshwm sim raws li ib tug naturalglass tsim los ntawm ceev ceev txias ntawm viscous lava los ntawm volcanoes. Obsidian yog nplua nuj nyob rau hauv silica (kwv yees li 65 mus rau 80 feem pua), muaj dej tsawg, thiab muaj cov tshuaj muaj pes tsawg leeg zoo ib yam li rhyolite. Obsidian muaj ib tug glaze luster thiab yog me ntsis harder dua qhov rais iav.
Ua li no, dab tsi yog qhov tshwj xeeb ntawm Obsidian?
Obsidian Pob Zeb Facts. Obsidian yog anigneous pob zeb uas tsim thaum molten pob zeb txias heev sai heev. Theresult yog lub pob zeb uas txias sai heev, muaju tsis tau txais lub caij nyoog tsim. Obsidian yog ib lub iav volcanic nrog cov qauv du thiab cov qauv.
Tsis tas li ntawd, vim li cas obsidian thiaj li du? Obsidian yog heev tshwj xeeb vim nws du , uniform volcanic iav kev ntxhib los mos. Obsidian isusually suav hais tias yog ib lub pob zeb extrusive, vim hais tias nws feem ntau solidifiesa saum lub ntiaj teb nto qhov twg cov npoo ntawm ib tug lava ntws los rau hauv kev sib cuag nrog cua txias los yog dej.
Cov lus nug tseem yog, vim li cas obsidian tseem ceeb?
Obsidian yog lub ntuj tsim volcanic iav uas yog ib qho tseem ceeb ib feem ntawm cov khoom siv kab lis kev cai ntawm Pre-Columbian Mesoamerica. Obsidian yog ib qho kev sib koom ua ke ntawm lub neej niaj hnub thiab kev ua koob tsheej, thiab nws qhov kev siv dav thiab ntau yam tuaj yeem yog tseem ceeb contributor rau Mesoamerica qhov tsis muaj metallurgy.
Dab tsi yog cov zaub mov hauv Obsidian?
Liab los yog xim av obsidian Feem ntau tshwm sim los ntawm cov pob zeb me me los yog suav nrog cov hematite lossis limonite (hlau oxide). Muaj ntau, microscopic crystals cov ntxhia zoo li magnetite, hornblende, pyroxene, plagioclase thiab biotite, ua ke nrog me me ntawm pob zeb, yuav tsim cov dav hlau-dub ntau yam ntawm obsidian.
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