Maginetiti
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Maginetiti ni madini yenye rangi nyeusi-kijivu yenye tabia ya sumaku. Kikemia ni oksidi ya feri (chuma) yenye valensi za 2+ na 3+. Fomula yake ni Fe3+2Fe2+O4.
Inatokea mara nyingi kwa umbo la fuwele zenye urefu wa karibu sentimita 1 na kona 8. Kiwango cha feri (chuma) hufikia asilimia 72 kwa hiyo ni malighafi muhimu kwa kutengeneza chuma.
Viungo vya Nje[hariri | hariri chanzo]
- Mineral galleries
- Powder X-Ray Diffraction (XRD) Pattern Archived Aprili 16, 2009 at the Wayback Machine.
- Bio-magnetics
- History of Magnetite Mining in the NJ Highlands
- Magnetite mining in New Zealand Accessed 25-Mar-09
- Magnetite mining in Santa Cruz Archived Machi 20, 2007 at the Wayback Machine.
- Peruvian sand dunes