sandstone has rounded grain so the water can get into a gaps between the grain quartzite have interlocking crystals
fine grained
SmallestshalesiltstonesandstoneconglomerateLargest
Fine-grained sedimentary rocks are classified by grain size and range from those composed of sub-microscopic particles (chert) to those with sand-sized particles (sandstone).
Sandstone.
Coarse is ruff/hard, and fine grain is smooth/ soft!
They are eather fine grain or course grain. Granite are course Grain, Basalts are fine grains.
Coarse is ruff/hard, and fine grain is smooth/ soft!
The crystal form is hexagonal, but the grain shape is rounded.
Fine grain, rough and soft
Sandstone is not a very lustrous stone found in the earth's crust. It is rated dull to subvitreous which means it has little shine.
fine grained