释义 |
LamprophyresBNC²³⁶²¹³⁺¹ 基本例句 煌斑岩 By means of microscopic measurement and linear programming, the mineral contents of lamprophyres in the Zhenyuan gold ore field, Yunnan Province, have been measured. 利用镜下实测法和线性规划法统计了云南镇沅金矿区煌斑岩中矿物的实际含量。 chemyq Evidence from major elements showed that the lamprophyres are potassic and potassium- rich calc- alkaline ones. 岩石化学特征表明岩石均为钾质-富钾质钙碱性煌斑岩; cnki Finally, the prospecting criteria and direction of lamprophyres are analysed. 对煌斑岩出露区的找矿标志以及本区的找矿方向作了分析。 cnki Low REE group and high REE group lamprophyres are10% and4% partial melting of the metasomatic enriched mantle. 低 REE组和高 REE组煌斑岩分别是交代富集地幔约10%和4%部分熔融的产物。 cnki Perhaps there are no lamprophyre magmas, and lamprophyres derive from common basic magmas which are contaminated by the crust in their source or the process of emplacement. 而煌斑岩原始岩浆可能并不存在,煌斑岩是普遍类型的基性岩浆在源区或侵位过程中遭受地壳混染的衍生物; cnki |