* Sand: Sand is primarily made of tiny rock fragments, often quartz. It's already a product of weathering and erosion.
* Salt: Salt (halite) is a mineral that forms through the evaporation of saltwater.
How they interact:
* Salt can be found in sandstone: Salt can get trapped within sand grains during sediment deposition. This can lead to the formation of evaporite sandstones or halite-bearing sandstones.
* Salt can form rocks: When saltwater evaporates, salt crystals form, eventually accumulating to form rock salt (halite) deposits.
Important Note: While sand and salt can exist in the same environment and even be present within the same rock, they don't directly combine to form a new type of rock. They're separate components within the overall rock formation.