英语语法分析

Feldspar; leucite; nepheline and nepheline syenite; fluorspar.

长石；白榴石；霞石及霞石正长岩；萤石(氟石)。

The light - colored minerals of K -rich volcanic rocks in this area are alkaline feldspar, leucite and nepheline.

本区富钾火山岩中浅色矿物有碱性长石、白榴石和霞石。

Leucite tephrite was derived from the more enriched mantle source with lower degree of partial melting of mantle source than alkaline olivine basalt.

相对于碱性橄榄玄武岩，白榴石碱玄岩来自于更加富集的地幔源区，其地幔的部分熔融程度相对较低。