Can someone compare quality or desireability of quartz to wind up clocks?
Sandstone has medium sized grains: the grains are visible but larger than silt clay or mud sized particles, yet are smaller than pebbles and cobbles. Yes, a sandstone would feel rough to the touch, about what 80 grit sandpaper would feel like. Sandstone is a sedimentary rock and would be deposited in layers, although depending on your hand sample or the process by which the sandstone was deposited, layers my not be visible. As for quartz, it is one of the most common minerals on Earth. The two most common elements in Earths crust are Silicon (Si) and Oxygen (O). The formula for quartz is SiO2. Concerning Australia, it's a very big place!! Can you provide us with a more specific and much smaller geographic range for describing what is common where?
quartz is the main contents of sandstone (quartz is the minerals and sandstone is the rock) is sandstone is rough? it depend on grains size meanly fine or course usually not rough it is friable yes sandstone Layery and constitutes what called formation
