贺兰山含砂泥质板岩的矿物组成对其定名贺兰石的影响

Mineral Composition of Sand-Bearing Argillaceous Slate in Helan Mountain and Its Inffuence on the Naming of Helan Stone

本文系统总结了贺兰石矿区的含砂泥质板岩中的主、次矿物和少量矿物种类及其赋存特征,讨论了这些矿物对其定名“贺兰石”的影响。研究结果表明石英碎屑的粒级和含量、氧化铁质(褐铁矿)的赋存状态是影响含砂泥质板岩定名贺兰石的关键因素。本研究有助于贺兰石产业制定科学的分类规则,有益于正确评价贺兰石的品质级别,对贺兰石加工企业具有一定的参考意义。

In this paper, species and occurrence characteristics of the primary, secondary and minor minerals in sand-bearing argillaceous slate of Helan stone mining area are summarized, and the inffuence of these characteristics on the naming of Helan stone is discussed. It is believed that the size and content of quartz particles, and the occurrence state of iron oxide(limonite) are the key factors inffuencing the naming of sand-bearing argillaceous slate as Helan stone. This study is helpful for helan stone industry to formulate scientific classification rules, is beneficial to correctly evaluate the quality grade of Helan stone, and has certain reference significance for Helan stone processing enterprises.