Cov cav hluav taws xob feem ntau muab faib ua peb pawg raws li lawv cov hlau sab hauv thiab cov npib tsib xee hlau cov ntsiab lus: cov pob zeb hlau, hlau kav hlau, thiab pob zeb hlau. Cov hlau thiab nickel hlau cov ntsiab lus hauv cov pob zeb hlau yog qhov tsawg dua los sis sib npaug li 30%. Cov hlau thiab npib tsib xee hlau cov ntsiab lus ntawm cov pob zeb cov kav hlau yog ntawm 30% thiab 65%. Cov hlau thiab npib tsib xee hlau cov ntsiab lus ntawm cov kav hlau yog ntau dua lossis sib npaug li 95%. Cov iav meteorites tsis muaj cov khoom siv hlau.
Feem ntau cov meteorites yog chondrites (91.5% ntawm tag nrho), ntawm cov chondrites zoo tib yam yog feem ntau (80% ntawm tag nrho). Lub chondrite yog tus cwj pwm los ntawm coob tus ntawm cov millimeter rau sub-millimeter silicate spheres sab hauv (saib duab). Chondrites yog cov teeb meem tseem ceeb tshaj plaws nyob rau hauv kab ntiajteb, thiab ncaj qha rau cov dej ntawm lub hnub qub nebula. Lawv qhov nruab nrab cov tshuaj lom neeg nruab nrab yog cov tshuaj lom neeg muaj pes tsawg leeg hauv lub hnub ci. Lub hnub qub pob zeb loj tshaj plaws hauv lub ntiaj teb yog Jilin Ordinary Chondrite uas tau poob rau hauv kuv lub teb chaws' s lub xeev Jilin xyoo 1976. Lub meteorite No. 1 hnyav txog 1770 kg.
Achondrites, stony-hlau meteorites, thiab hlau meteorites yog hu ua ke ua cov meteorites sib txawv. Lawv yog cov khoom lag luam ntawm qhov sib txawv thiab crystallization ntawm chondrites los ntawm kev kub siab melting, thiab sawv cev cov qauv ntawm cov qib sib txawv hauv cov asteroids. Sab hauv qauv ntawm cov asteroids zoo ib yam li lub ntiaj teb. Nws muab faib ua peb txheej txheej, nrog cov khoom siv hlau ua hlau (hlau txheej hlau) hauv plawv, pob zeb-hlau sib xyaw mantle txheej (pob zeb-hlau hlau) hauv nruab nrab, thiab pob zeb ua pob zeb ua pob zeb (achondrite) hauv nruab nrab. Meteorite). Lub ntiaj teb hlau loj tshaj plaws nyob rau hauv lub ntiaj teb yog Hoba hlau meteorite los ntawm Namibia, Africa, hnyav txog 60 tons. Lub tshuab hlau hlau tau pom nyob hauv Yinniugou, Nroog Qinggou, Altay Cheeb Tsam, Xinjiang, hnyav txog 28 tons thiab yog lub hlau loj thib peb hauv ntiaj teb.