长石的

The sunstone theory was first proposed in 1966 by the Danish archaeologist Thorkild Ramskou.

关于（使用）日长石（导航）理论，最初是由丹麦考古学家托尔德·拉姆斯库于1966年提出。

Cumulate plagioclase appears abruptly at the base of the F unit, which rests on an erosional disconformity .

堆积斜长石在位于侵蚀假整合之上F单底突然出现。

The albite component increases while anorthic component decreases in detrital plagioclase.The plagioclase turned into an end - member component of albite.

斜长石碎屑中钠长石组逐渐增多，钙长石组逐渐减少，最终钠端钠长石。

Therefore, the albitization of plagioclase is shown in the early stage of diagenesis and albitization of potash feldspar appears only in the late stage of diagenesis.

因此，斜长石钠长石化可见于岩早期，而钾长石钠长石化只发生于岩晚期。

Depending on the chemical composition the structural parameters of the melilite vary in the range between gehlenite and mernite.Melilitic separation and melilite as a primary phase are very rare.

黄长石结构参数，按其化学是在钙铝黄长石和镁黄长石之间变化，黄长石作为原始矿物相在碱性矿渣中比较罕见。