Video: Dab tsi yog cov pob zeb tseem ceeb hauv granite?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Granite yog tsim los ntawm quartz thiab feldspar nrog me me ntawm mica , amphiboles, thiab lwm yam minerals.
Tsis tas li ntawd, dab tsi yog 3 lub ntsiab minerals hauv granite?
Nws muaj coarse nplej ntawm quartz (10-50%), poov tshuaj feldspar , thiab sodium feldspar . Cov zaub mov no ua rau ntau tshaj 80% ntawm pob zeb. Lwm cov zaub mov muaj xws li mica (muscovite thiab biotite) thiab hornblende (saib amphibole).
Tsis tas li ntawd, cov khoom ntawm granite yog dab tsi? Granite yog ib qho nyuaj, ntxhib-grained pob zeb ua rau feem ntau ntawm lub ntiaj teb. Nws muaj qhov tseem ceeb ntawm peb cov ntxhia : quartz, alkali feldspar (uas muaj alumina thiab silica) thiab plagioclase feldspar (uas muaj sodium thiab calcium). Nws kuj muaj me me ntawm cov ntxhia xws li hornblende thiab biotite mica.
Tsis tas li ntawd, muaj pes tsawg minerals nyob hauv granite?
Hais lus nruj, granite yog lub pob zeb uas tsis muaj zog nrog ntawm 20% thiab 60% quartz los ntawm ntim, thiab tsawg kawg 35% ntawm tag nrho cov feldspar suav nrog alkali feldspar, txawm hais tias feem ntau lo lus " granite "yog siv los xa mus rau ntau yam ntawm cov pob zeb ntxhib-grained igneous pob zeb uas muaj quartz thiab feldspar.
Dab tsi minerals nyob rau hauv liab granite?
Pink granite, zoo li lwm cov granites yog cov pob zeb intrusive igneous feem ntau muaj feldspar , quartz , mica & amphibole cov ntxhia.
Pom zoo:
Dab tsi yog qhov txawv ntawm cov pob zeb tsis foliated thiab foliated metamorphic pob zeb?
Foliated metamorphic pob zeb xws li gneiss, phyllite, schist, thiab slate muaj ib txheej txheej los yog banded zoo li uas yog tsim los ntawm raug tshav kub thiab qhia siab. Non-foliated metamorphic pob zeb xws li hornfels, marble, quartzite, thiab novaculite tsis muaj txheej txheej lossis banded zoo li
Dab tsi yog pob zeb tsim cov ntxhia pob zeb?
Cov pob zeb tsim cov zaub mov yog: feldspars, quartz, amphiboles, micas, olivine, garnet, calcite, pyroxenes. Minerals tshwm sim nyob rau hauv ib lub pob zeb nyob rau hauv me me yog hu ua "accessory minerals"
Lub npe rau lub pob zeb nruab nrab ntawm cov pob zeb uas txias heev yog dab tsi?
Extrusive igneous pob zeb
Dab tsi yog cov pob zeb niam txiv ntawm cov pob zeb metamorphic?
Metamorphic pob zeb Metamorphic pob zeb Texture Niam txiv pob zeb Phyllite Foliated Shale Schist Foliated Shale, granite thiab volcanic pob zeb Gneiss Foliated Shale, granite thiab volcanic pob zeb Marble Nonfoliated Limestone, dolostone
Cov pob zeb hauv av twg tuaj yeem tsim cov pob zeb zoo li lub raum?
Hematite (los yog haematite) Kuj tseem muaj ntau hom hematite, qee yam yog: raum ore, ib qho loj, botryoidal (lumpy) lossis reniform (lub raum zoo li tus) daim ntawv; specularite, micaceous (flaky) daim ntawv; oolitic, ib daim ntawv sedimentary tsim los ntawm cov nplej me me; liab ochre, ib daim ntawv liab earthy