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

以方镁、镁铝尖、铬矿为主相中性耐火制品。

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

这颗系外行星冷凝后产生矿物，：顽火辉、刚玉、尖硅灰。

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

尖其它应用，尖轴承及颜料等也取得了较发展。

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

在所有可能尖矿族成员中，铁铝尖锰铝尖被发现是最有效(添加剂)。