Lunar anorthosite tau pom thawj zaug los ntawm cov pob zeb tawg hauv qhov chaw regolith qauv thaum lub sijhawm Apollo 11 lub hom phiaj (Hoo li al., 1970), thiab pob zeb anorthosite tau pom thawj zaug thaum lub sijhawm Apollo 15 txoj moo zoo (James, 1972).
Puas pom anorthosite hauv ntiaj teb?
“Anorthosite tsis tshua muaj nyob hauv ntiaj teb,”Rickman hais. Nws tsis tshua muaj, txawm li cas los xij, kom pom qhov ze li ntawm ntshiab, siab-calcium hom anorthosite-anorthite-uas zoo li cov tshuaj muaj pes tsawg leeg ntawm anorthosite los ntawm lub hli. Pob zeb pom nyob rau hauv lub Stillwater Complex los ze heev.
Anorthosite tsim li cas?
Hloov chaw, bas altic magma tsim cov magma loj ntawm lub hauv paus ntawm lub crust thiab fractionates loj npaum li cas ntawm mafic minerals, uas tog rau hauv qab ntawm lub chamber. Lub co-crystallizing plagioclase crystals ntab, thiab nws thiaj li tau muab tso rau hauv lub crust li anorthosite plutons.
anorthosite siv rau dab tsi?
Anorthosite yog ib qho yuav luag monomineralic, feldspathic pob zeb nrog ntau yam kev lag luam siv (Table 1). Anorthosite massifs paub txog host tseem ceeb ore depos- nws xws li ilmenite thiab yog, nyob rau hauv ntau qhov, zoo heev qhov chaw rau high-zoo pob zeb aggregate thiab kuj rau dimension- pob zeb.
Lub hli yog anorthosite ntau npaum li cas?
Nyob hauv lunar anorthosites Ca-cov ntsiab lus yog ze rau 100%. Yuav kom muaj labradorescence, feem pua ntawm calciumyuav tsum nyob rau hauv thaj tsam ntawm 48-58%. Cov nyhuv ntawm labradorescence yog tshwm sim los ntawm kev tawg ntawm plagioclase crystals rau hauv ntau yam sib txawv lamellae sib txawv (calcium thiab sodium nplua nuj) muaj pes tsawg leeg.
