Cov ntxhia hematite yog lub hauv paus rau ntuj liab hlau oxide. Hematite yog muab los ntawm Greek lo lus hema, uas txhais tau hais tias ntshav, thiab lub npe hu ua "bloodstone" hauv tebchaws Greece thaum ub (Theofrastus, c. 325 BC), txhais tau hais tias cov pob zeb hauv av yog cov ntshav liab. Hematite yog ib qho tseem ceeb hlau ore, thiab nws cov ntshav liab hmoov xim qiv nws tus kheej zoo siv los ua xim. Hematite yog ib qho ntawm lub ntiaj teb cov xim qub tshaj plaws, tau siv los ntawm txhua qhov kev vam meej loj thiab lub sijhawm.
Qhov chaw
Hematite tshwm sim nyob rau hauv cov xwm li nodules los yog earthen masses es tsis yog muaju. Daim ntawv crystalline muaj xim ntawm steel-grey mus rau dub, whereas crypto-crystalline hematite yog npub liab mus rau ci liab. Cov ntxhia pob zeb no tuaj yeem pom nyob rau hauv ntau qhov kev tso nyiaj.
Muaj ntau ntau hom hematite, ob qho uas tsim nyog siv los ua cov xim: oolitic hematite, uas yog lub ntiaj teb friable tsim los ntawm cov nplej me me ntawm cov xim liab tsaus uas yog lustrous thiab greasy rau qhov kov; thiab hematite sawv, zoo-crystalline thiab crypto-crystalline daim ntawv ntawm hematite ntawm cov xim liab, uas feem ntau ntsib nyob rau hauv friable earthen masses los yog reniform aggregates ntawm bladed crystals nyob rau hauv ib ncig kev npaj muab cov tsos ntawm ib tug sawv. Liab hlau oxides (hematite) deposits tuaj yeem pom thoob plaws ntiaj teb thiab tau siv ntev los ua cov xim.
