rhombic quartz

• 长石

rhombic quartz的用法和样例：

例句

1. The China fir grows well at basalt and quartz sandstone, but poor at clay and sand-shale.
   其中以玄武岩与石英砂岩发育的土体上的杉木生长最好，依次为长石石英砂岩与变余砂岩，而以煤系砂页岩和第四纪红色粘土上的杉木生长最差。
2. Oxalic acid diluted in hot water will remove the iron oxide from such specimens as microcline, quartz, and fluorite.
   草酸稀释后，在热水，将可消除氧化铁从这些标本为钾长石，石英，萤石。