how much quartz is in a 1 ton boulder of quartzite?
quartz and sandstone are two completely different types of stone. Quartz is a hard stone and sandstone is softer. Quartz has a shimmering effect in it sandstone is matt.
tuff is leftover from volcanoes and it's soft. Quartz is a real rock and it's harder. I would choose quartz sandstone, any day.
