The exoplanet's atmosphere condenses out minerals such as enstatite, corundum, spinel, and wollastonite.

这颗系外行星气冷凝后产生矿，如：顽火辉石、刚玉、尖石和硅灰石。

The development and application of raw minerals and products of spinels are also briefly introduced.

尖石其它应用，如尖石轴承及颜料等也取得了发展。

It`s made from periclasite,magnesite aluminium spinel,chrome ore as raw material.

以方镁石、镁铝尖石、铬矿为主相中性耐火制品。

From all possible members of the spinel groups， hercynite and galaxite， were found to be the most efficient.

在所有可能尖石矿族成员中，铁铝尖石和锰铝尖石被发现是最有效(添加剂)。