Eric Walker added Millions of years ago hot water was trapped inside this crystal as it cooled and contracted... this vapor bubble was formed inside the quartz. : interestingasfuck to Quartz

Eric Walker added Quartz - Wikipedia to Quartz

Eric Walker added r/geology - Giant Arkansas Quartz Crystal to Arkansas and Quartz

Eric Walker added a number of links to Quartz, and added Quartz to Silica and Minerals and gems

Eric Walker added Quartz and Silicon dioxide - Wikipedia to Silica, and added Silica to Silicon dioxide

Eric Walker added a number of topics and a number of links to Minerals and gems, and added Minerals and gems to Geology, Natural resources and Atoms, molecules, chemicals, minerals, materials and compounds