In silicate minerals and magnetites existed isomorph tin.

硅酸盐矿和铁矿中都存在类质同象态锡。

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

山东省滨海砂矿以石英、锆英石、铁矿、砂金等主,其次、球石、钛铁矿、金红石等。

Apart from magnetite and almandine garnet, the skarn also contains these minerals: idocrase, actinolite, epidote, fluorite and andradite (another garnet mineral).

主要构成矿除铁矿和铁铝榴石外，矽卡岩尚有其他矿山石，阳起石，绿帘石，萤石及钙铁榴石。

Evolving process of hub dynamo which used in bicycle is presented. The performance of magnetite viz. ferrimagnetism or NdFeB is analyzed. The prospect of marketing is viewed.

摘要介绍了自行车上使用的花鼓式发电机的演变过程，分析了所用石，即铁氧体或钕铁硼的性能优劣，并进行了市场前景展望。

For sinter with 25% and 50% MAC fines the iron oxides mainly consisted of hematite and magnetite, the bonding phase were mainly dicalcium silicate, glassiness, and a few amount of calcium ferrite.

配比25%和50%的两种烧结矿中铁氧化均以赤铁矿、铁矿主，粘结相主要以铁酸钙、硅酸二钙和玻璃质主，但铁酸钙数量不多。