Haematite is a special case of the more general ilmenite structure.

赤铁是更为一般的钛铁构中一个特的情况。

Quartz, zircon, magnetite, gold are major constituents of littoral placers in Shandong province, while shell, ballstone, ilmenite, rutile being secondary.

山东砂以石英、锆英石、磁铁、砂金等为主,其次为贝壳、球石、钛铁、金红石等。