Here's why:
* Physical weathering: Quartz is very hard (7 on the Mohs hardness scale) and resistant to abrasion. It doesn't easily break down into smaller pieces due to physical forces like wind, water, or ice.
* Chemical weathering: Quartz is chemically inert. It doesn't readily react with acids or other chemicals in the environment. This makes it very resistant to chemical breakdown.
Other resistant minerals:
While quartz is the most common, other minerals can also be resistant to weathering, including:
* Feldspar: Some varieties are more resistant than others.
* Garnet: A hard and chemically inert mineral.
* Diamond: The hardest natural mineral.
* Titanium minerals: Like rutile and ilmenite.
It's important to note that even these resistant minerals can be weathered over very long periods. The rate of weathering depends on factors like the climate, the presence of other minerals, and the type of weathering process.
