See alumina biological ceramics (page 840).
Natural materials and products -> Mineral materials
materials(材料)
pyrrhotite(磁黄铁矿)
magnetite(磁铁矿)
composition(复合)
olivine(橄榄石)
peridotite(橄榄岩)
ferrochromium(铬铁)
chromite(铬铁矿)
pyrite(黄铁矿)
gabbro(辉长岩)
pyroxene(辉石)
pyroxenolite(辉石岩)
massive structure(块状构造)
refractory(耐火材料)
serpentinite(蛇纹岩)
ferrotitanium(钛铁)
ilmenite(钛铁矿)
iron(铁)
native platinum(自然铂)