Give It Some Thought Chapter 3

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Pasco-Hernando State College *

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Geology

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Apr 3, 2024

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ABIGAIL WALDEN Give It Some Thought 1. Using the geologic definition of mineral as your guide, determine which of the items in this list are minerals and which are not. If something in this list is not a mineral, explain. 1. Gold nugget- A gold nugget is a mineral. 2. Seawater- Seawater is not a mineral because it is not a solid substance. 3. Quartz- Quartz is a mineral. 4. Cubic Zirconia- Cubic Zirconia is not a mineral because it is made in a lab. 5. Obsidian- Obsidian not a mineral because it has no orderly crystalline structure. 6. Ruby- Ruby is a mineral. 7. Glacial ice- Glacial ice is a mineral. 8. Amber- Amber is a mineral. 2. Assume that the number of protons in a neutral atom is 92 and the atomic mass is 238.03. ( Hint: Refer to the periodic table in Figure 3.5 to answer this question.) 1. What is the name of the element? The name of the element is Uranium. 2. How many electrons does it have? Uranium has 92 electrons. 3. Referring to the accompanying photos of five minerals, determine which of these specimens exhibit a metallic luster and which have a nonmetallic luster. Metallic – The choices B, C, and E have a metallic luster. Nonmetallic- The choices A and D have a nonmetallic luster. 4. Gold has a specific gravity of almost 20. A 5-gallon bucket of water weighs 40 pounds. How much would a 5-gallon bucket of gold weigh? A five-gallon bucket of gold would weigh 800 lbs. 5. Examine the accompanying photo of a mineral that has several smooth, flat surfaces that resulted when the specimen was broken. 1. How many flat surfaces are present on this specimen? There are 6 flat surfaces present on this specimen. 2. How many different directions of cleavage does this specimen have? There are 3 different directions of cleavage on this specimen. 3. Do the cleavage directions meet at 90-degree angles? The cleavage directions do not meet at 90-degree angles. 6. Each of the following statements describes a silicate mineral or mineral group. In each case, provide the appropriate name: 1. The most common member of the amphibole group is hornblende. 2. The most common light-colored member of the mica family is Muscovite. 3. The only common silicate mineral made entirely of silicon and oxygen is Quartz. 4. A silicate mineral with a name based on its color are Garnet and Olivine. 5. A silicate mineral characterized by striations is Labradorite. 6. Silicate minerals that originate as a product of chemical weathering is Clay.

ABIGAIL WALDEN 7. What mineral property is illustrated in the accompanying photo? The mineral property that is illustrated in this photo is cleavage.

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