How to Use "quartz" with Example Sentences

1. He gives the counter-example of a quartz crystal .
2. Both shatter cones and shocked quartz are considered strong evidence of meteorite impacts .
3. Salt , snowflakes , and the quartz in your watch are all crystals .
4. It is mainly used for medium and fine crushing , especially in crushing iron ore and quartz stone .
5. In their natural state , oil sands are made of quartz sand covered by layers of water and bitumen .