A type of lamprophyre, characterized by essential analcite, barkevikite (an alkali amphibole), and/or augite. There is no feldspar present in this type of lamprophyre.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。