Rocks and Minerals Defining Minerals: Composition and crystal structure by Anne E. Egger, Ph.D. Reading Quiz Teach with this 1. Which of the following is NOT part of the definition of a mineral? naturally formed solid produced organically specific chemical composition 2. Wood is considered a mineral. true false 3. Steno's contribution to the science of mineralogy was the observation that the size of a crystal doesn't affect the angles between crystal faces. the size of crystals changes with the angles between the crystal faces. quartz crystals are composed of silicon and oxygen. quartz has a distinctive crystal color. 4. The earliest study of minerals was conducted by Agricola, who mostly described minerals in relation to medicine. mining practices. chemical composition. crystal structure. 5. A rock is just another name for a mineral. true false 6. Minerals that are found on other planets might be able to tell us if life was ever present on that planet. if water was ever present on that planet. if volcanoes ever erupted on that planet. all of the choices 7. Three minerals called kyanite, andalusite, and sillimanite all have the same chemical composition (Al2SiO5), but they look very different. Which of the following is the most likely reason for this? The atomic structures of the three minerals are different. The locations where these minerals occur are different. The three minerals contain different impurities. Three different people named the same mineral. 8. Specific minerals can be created under any situation, as long as the compounds that make it up are present. true false Score Quiz
