[img]https://encrypted-tbn0.google.com/images?q=tbn:ANd9GcTaL3P0kjxhzhqDhZOLWKYyr5uesXQc63l_ZctiJ1JkPye6cYHI[/img] 1. Name 3 minerals that have this arrangement of silicon-oxygen tetrahedra. 2. What type of cleavage is common in minerals with this structure? 3. What is the name for this group of silicates? 4. What is the ratio of silicon to oxygen in this group of silicates?