There are gold, silver, iron, manganese, molybdenum, uranium, mica, vermiculite, quartzrock, feldspar, granite, marble, barite and mineral water, and so on.
主要有金、银、铁、锰、钼、铀、云母、蛭石、石英石、钾长石、花岗岩、大理石、重晶石和矿泉水等。
2
European monks would take a piece of clear rock, often quartz, and place it on top of the reading material.
欧洲的僧侣们会拿一块透明的石头，通常是石英，放在阅读材料的上面。
3
The intense heat of the impact would produce heat-shocked quartz in many types of rock.