Cov txheej txheem:
Video: Pumice muaj cov zaub mov dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Me me siv lead ua ntawm ntau yam minerals tshwm sim nyob rau hauv ntau lub pumices; feem ntau yog feldspar , augite, hornblende, thiab zircon. Cov kab noj hniav (vesicles) ntawm pumice yog qee zaum sib npaug thiab tej zaum kuj yuav elongated los yog tubular, nyob ntawm qhov ntws ntawm cov lava solidifying.
Hauv qhov no, dab tsi yog pumice ua los ntawm?
Pumice yog muaj li ntawm heev microvesicular iav pyroclastic nrog heev nyias, translucent npuas phab ntsa ntawm extrusive igneous pob zeb. Thaum muaj cov pa roj ntau dua, qhov tshwm sim yog qhov zoo dua-grained ntau yam puv lub npe hu ua pumicite. Pumice suav hais tias yog iav volcanic vim nws tsis muaj cov qauv siv lead ua.
Kuj Paub, pumice tuaj yeem pom qhov twg? Ntau lawm. Ltalis yog tus tsim khoom loj tshaj plaws ntawm pumice hauv ntiaj teb. Lwm tsib tus thawj coj pumice producers yog Spain , tim Nkij teb chaws , Turkey, thiab Chile . Pumice kuj tseem mined ntau nyob rau hauv Tebchaws Meskas , nrog Oregon, Arizona, thiab California yog tshwj xeeb tshaj yog cov neeg tsim khoom loj ntawm pob zeb hauv lub tebchaws.
Tsis tas li ntawd, cov khoom ntawm pumice yog dab tsi?
Cov Khoom ntawm Pumice Pob Zeb
- Kev sib xyaw. Pumice muaj cov tshuaj muaj pes tsawg leeg zoo ib yam li obsidian, lossis volcanic iav.
- Qhov ntom. Pumice yog qhov hnyav heev.
- Buoyancy. Pumice pob zeb yog li sib sib zog nqus lawv feem ntau ntab rau hauv dej rau ib lub sij hawm, ua ntej nws thiaj li ntog ib zaug ua waterlogged.
- Abrasivity.
- Xim.
Puas yog pumice ntuj?
Pumice muaj kev nyab xeeb siv rau ntawm lub cev vim nws yog a ntuj mineral thiab yog non-toxic. Nws tuaj yeem siv los tshem tawm grime thiab av nrog rau exfoliate ntawm daim tawv nqaij. Pumice kuj tseem siv rau hauv nws ntuj pob zeb daim ntawv los hnav calluses thiab tshem tawm cov tawv nqaij tuag ntawm ko taw thiab tes.
Pom zoo:
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