Hlau nplaum Qhia Taw Qhia
Magnetite hais txog qhov ore ntawm oxide ntxhia magnetite. Puas yog cov kab ke siv hluav taws xob equiaxed. Lub muaju yog octahedral thiab dodecahedron. Lub ntsej muag ci ntsa iab muaj kab txaij. Feem ntau ntau cov aggregates. Hlau dub, lossis xim xiav tsaus nti indigo xim. Lub streaks yog xim dub thiab semi-nws yog xim hlau. opaque. Tsis muaj cleavage. Qhov txhaem tsis tiaj tus. Hardness 5.5 ～ 6.5. Qhov ceev 5.16 ~ 5.18g / cm3. Nrog muaj zog hlau nplaum. Txig. Tsis muaj qab ntxiag thiab qab qab. Nws yog feem ntau tsim hauv cov pob zeb magmatic thiab pob zeb metamorphic.