1. Which mineral is mined for its iron content? A) hematite B) fluorite C) galena D) talc

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Beverly Parks
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1 1. Which mineral is mined for its iron content? A) hematite B) fluorite C) galena D) talc 2. Which material is made mostly of the mineral quartz? A) sulfuric acid B) pencil lead C) plaster of paris D) window glass 3. Which mineral can be found in all samples of rhyolite and andesite? A) pyroxene B) quartz C) biotite D) potassium feldspar 4. Which mineral is the major component of drywall? A) talc B) calcite C) muscovite mica D) selenite gypsum 5. The three statements below are observations of the same rock sample: The rock has intergrown crystals from 2 to 3 millimeters in diameter. The minerals in the rock are gray feldspar, green olivine, green pyroxene, and black amphibole. There are no visible gas pockets in the rock. This rock sample is most likely A) sandstone B) gabbro C) granite D) phyllite 6. Which two rocks have the most similar mineral composition? A) marble and rhyolite B) limestone and basalt C) quartzite and rock salt D) granite and phyllite 7. Which is an accurate statement about rocks? A) Rocks are located only in continental areas of the Earth. B) Rocks seldom undergo change. C) Most rocks contain fossils. D) Most rocks have several minerals in common.

8. The data table below gives characteristics of the gemstone peridot.

Which characteristic do samples of the mineral pyroxene normally exhibit?

Which mineral is commonly used as a food additive? A) calcite B) talc C) halite D) fluorite 10.

2 8. The data table below gives characteristics of the gemstone peridot. Peridot is a form of the mineral A) pyrite B) pyroxene C) olivine D) garnet 9. Which characteristic do samples of the mineral pyroxene normally exhibit? A) yellow to amber color B) bubbling in hydrochloric acid C) cleaves at 56 and 124 D) hardness of 5 to Which mineral is commonly used as a food additive? A) calcite B) talc C) halite D) fluorite 10. Base your answer to the following question on the data table below and on your knowledge of Earth science. The table provides information about four minerals, A through D. The diagram below represents a sample of mineral A. Mineral A is most likely A) garnet B) galena C) olivine D) halite 11. Which mineral will scratch fluorite, galena, and pyroxene? A) graphite B) calcite C) olivine D) dolomite

Base your answers to questions 13 and 14 on the diagram below, which shows the results of three different physical tests, A, B, and C, that were performed on a mineral. 13. Which mineral was tested?

3 Base your answers to questions 13 and 14 on the diagram below, which shows the results of three different physical tests, A, B, and C, that were performed on a mineral. 13. Which mineral was tested? A) amphibole B) quartz C) galena D) graphite 14. The luster of this mineral could be determined by A) using an electronic balance B) using a graduated cylinder C) observing how light reflects from the surface of the mineral D) observing what happens when acid is placed on the mineral 15. The mineral graphite is often used as A) a lubricant B) an abrasive C) a source of iron D) a cementing material 16. A student created the table below by classify six minerals into two groups, A and B, based on a single property. Which property was used to classify' these minerals? A) color B) luster C) chemical composition D) hardness

4 17. A human fingernail has a hardness of approximately 2.5. Which two minerals are softer than a human fingernail? A) calcite and halite B) sulfur and fluorite C) graphite and talc D) pyrite and magnetite 18. Base your answer to the following question on the photograph below. The photograph shows several broken samples of the same colorless mineral. Which physical property of this mineral is most easily seen in the photograph? A) fracture B) hardness C) streak D) cleavage 19. Which mineral leaves a green-black powder when rubbed against an unglazed porcelain plate? A) galena B) graphite C) hematite D) pyrite 20. What is the hardness of Sulfur? A) 6.5 B) 2 C) 3 D) Which mineral shows no cleavage, has a hardness of 7, and a composition of SiO2? A) Graphite B) Garnet C) Halite D) Quartz 22. Which texture best describes an igneous rock that formed deep underground? A) glassy B) vesicular C) fine grained D) coarse grained 23. Mineral crystals of quartz, biotite mica, and amphibole are produced primarily by the A) chemical reaction of elements in seawater B) cooling and solidification of magma C) deposition of sediments by a glacier D) metamorphism of bituminous coal 24. What is the color and type of rock that forms oceanic crust at mid-ocean ridges? A) light colored and igneous B) light colored and sedimentary C) dark colored and igneous D) dark colored and sedimentary 25. Which igneous rock is dark colored, cooled rapidly on Earth's surface, and is composed mainly of plagioclase feldspar, olivine, and pyroxene? A) obsidian B) rhyolite C) gabbro D) scoria 26. Which process could lead directly to the formation of pumice rock? A) precipitation of minerals from evaporating seawater B) metamorphism of unmelted rock material C) deposition of quartz sand D) explosive eruption of lava from a volcano 27. Which three minerals are most commonly found in the igneous rock granite? A) amphibole, calcite, and hematite B) amphibole, biotite mica, and gypsum C) plagioclase feldspar, pyroxene, and olivine D) plagioclase feldspar, potassium feldspar, and quartz 28. For an igneous rock to be classified as rhyolite, it must be light colored, be fine grained, and contain A) quartz B) calcite C) pyroxene D) olivine 29. A fine-grained igneous rock contains 11% plagioclase, 72% pyroxene, 15% olivine, and 2% amphibole. This rock would most likely be classified as A) granite B) rhyolite C) gabbro D) basalt

5 30. Olivine and pyroxene are commonly found in igneous rocks that are A) felsic, with low density B) felsic, with high density C) mafic, with low density D) mafic, with high density 31. Rhyolite and granite are alike in that they both are A) fine-grained B) dark-colored C) mafic D) felsic 32. Which property would be most useful for identifying igneous rocks? A) kind of cement B) mineral composition C) number of minerals present D) types of fossils present 33. Compared to basalt, granite is A) lighter in color B) greater in density C) more mafic in composition D) more fine grained in texture 34. Which characteristic of an igneous rock would provide the most information about the environment in which the rock solidified? A) color B) texture C) hardness D) streak 35. A nonvesicular rock is made entirely of green 2-millimeter-diameter crystals that have a hardness of 6.5 and show fracture, but notcleavage. The rock is most likely A) shale B) phyllite C) dunite D) schist 36. Which mineral will scratch glass (hardness = 5.5), but not pyrite? A) gypsum B) fluorite C) orthoclase D) quartz 37. An unidentified mineral that is softer than calcite exhibits a metallic luster and cubic cleavage. This mineral most likely is A) galena B) pyrite C) halite D) pyroxene 38. Which mineral scratches dolomite and is scratched by olivine? A) galena B) quartz C) potassium feldspar D) muscovite mica 39. Which mineral has a hardness of and makes a good electrical insulator? A) Pyroxene B) Biotite Mica C) Gypsum D) Magnetite 40. Which mineral has a greater hardness? A) Galena B) Olivine C) Garnet D) Biotite Mica

6 Answer Key Mineral and Igneous Rock F A 2. D 3. C 4. D 5. B 6. D 7. D 8. C 9. D 10. B 11. C 12. C 13. A 14. C 15. A 16. B 17. C 18. D 19. D 20. B 21. D 22. D 23. B 24. C 25. D 26. D 27. D 28. A 29. D 30. D 31. D 32. B 33. A 34. B 35. C 36. C 37. A 38. C 39. B 40. C

Review - Unit 2 - Rocks and Minerals

Review - Unit 2 - Rocks and Minerals Base your answers to questions 1 and 2 on the diagram below, which shows the results of three different physical tests, A, B, and C, that were performed on a mineral.