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Name ________________________________________ Ch 5 Mineral Test Review 1. Name the 5 “rules” that define a mineral. 11. Which mineral property is illustrated by the peeling of muscovite mica into thin, flat sheets? _______________________________________ _______________________________________ _______________________________________ _______________________________________ _______________________________________ 2. Which physical characteristic of a mineral is least useful when identifying minerals? _______________________________________ 12. Scratching a mineral against a glass plate is a method used for determining which physical property of a mineral? _______________________________________ _______________________________________ 13. Why do all minerals have crystal shapes? 3. What two elements are present in all silicate minerals? _______________________________________ _______________________________________ 14. Which mineral in the form of sand can be used to manufacture glass? 4. What is a native element or native mineral? _______________________________________ 5. Which of the following is an example of a native element: Halite, Ice, Oxygen, or Copper? _______________________________________ 6. Which two elements are the most abundant by weight in the Earth’s crust? _______________________________________ 7. Name the mineral that is made of CaCO3 (calcium carbonate) and has rhombohedral cleavage with a monoclinic crystal shape. _______________________________________ 8. Which mineral exhibits fracture, has a hardness of 7 (scratches glass), and a composition of SiO2? _______________________________________ 9. Moh’s scale would be useful in identifying what physical property of a mineral? _______________________________________ 10. Which physical property describes the color of the powdered form of the mineral? _______________________________________ _______________________________________ 15. Which mineral can be identified by smell? _______________________________________ 16. Name any mineral that occurs as a compound and explain what makes it a compound: _______________________________________ 17. Rocks are made of minerals; minerals are made of elements; what are elements made of? _______________________________________ 18. What property includes the descriptions glassy, pearly or earthy? _______________________________________ 19. What mineral is known as “fool’s gold”? _______________________________________ 20. Known for their resistance to being scratched, what physical property is shared by all gemstones, such as diamonds, rubies and emeralds? _______________________________________ Read the given mineral and its chemical composition and identify its mineral group. __________________________ Silver-- Ag __________________________ Sulfur-- S __________________________ Talc-- Mg3Si4O10(OH)2 __________________________ Chalcopyrite-- CuFeS2 __________________________ Calcite-- CaCO3 __________________________ Gypsum-- CaSO4 __________________________ Halite-- NaCl __________________________ Corundum-- Al2O3 __________________________ Hematite-- Fe2O3 ___________________________ Mica-- KAl3Si3O10(OH)2 __________________________ Barite-- BaSO4 ___________________________ Fluorite-- CaF __________________________ Galena-- PbS ___________________________ Dolomite-- CaMg(CO3)3 Mineral or not? Write yes or no. If no, explain why. • Gold - ______________________________________________ • Water - _____________________________________________ • Sugar - _____________________________________________ • Ice - _______________________________________________ • Halite (salt) - _________________________________________ • Gemstones - _________________________________________ • Coal - ______________________________________________ • Synthetic stones - _____________________________________ Use the mineral kit (if available to you) to answer the following questions: Ex 1 6 7 12 13 2 8 14 3 9 15 4 10 16 5 11 17 1. The Mineral in container #1 is Calcite. Does this mineral exhibit Fracture or Cleavage? Explain. _________________________________________________________________________________________________ 2. The Mineral in container #3 is Galena. What is the general Luster of this mineral?_____________________________ 3. The Mineral in container #4 is Quartz. Is its Hardness greater than or less than 5.5? Explain. _________________________________________________________________________________________________ 4. The Mineral in container #6 is Talc. What color is its Streak?______________________________________________ 5. The Mineral in container #7 is Hematite. What color is its Streak? __________________________________________ 6. Mineral #9 is Limonite. Does this mineral exhibit Fracture or Cleavage? Explain. _________________________________________________________________________________________________ 7. The Mineral in container #10 is Graphite. Is its Hardness greater than or less than 2.5? Explain. _________________________________________________________________________________________________ 8. Mineral #13 is Bauxite. What is the general Luster of this mineral?__________________________________________