Term
| What is true of the density of a mineral? |
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Definition
| Each mineral has its own characteristic denisty which does not change. |
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Term
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Definition
| Jewelry, mechanical parts, and grinding and polishing materials (like sandpaper). |
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Term
| What kind of mine is used when ores occur in veins? |
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Definition
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Term
| Is weight used to identify minerals? |
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Definition
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Term
| What mineral is a number 9 on the Mohs Hardness Scale? |
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Definition
| Corundum - it breaks in hexagonal pieces and can be ground up for sandpaper. |
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Term
| What term is used for how a mineral reflects light? |
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Definition
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Term
| What state of matter is a mineral? A solid, liquid, or a gas? |
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Definition
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Term
| What is the name of a narrow band of minerals that lie between rock layers? |
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Definition
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Term
| The process of removing a metal from an ore is called? |
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Definition
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Term
| A hard, colorful crystal that has a glassy luster is called a? |
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Definition
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Term
| True/False? Some minerals were once living things. |
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Definition
| FALSE!! They must be INORGANIC. |
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Term
| True/False? All minerals have a crystal structure. |
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Definition
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Term
| True/False? Most minerals can be identified by their color alone. |
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Definition
| False. Color is a poor choice to use. Many minerals are the same color. |
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Term
| True/False? A mineral always contains certain elements in definite proportions. |
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Definition
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Term
| True/False? Very few minerals are compounds. |
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Definition
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Term
| True/False? A mineral can scratch any mineral harder than itself. |
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Definition
| False. Softer than itself, yes! |
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Term
| True/False? Each piece of a mineral has the same crystal structure. |
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Definition
| True. Think about salt, they are all perfect cubes. |
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Term
| True/False? Minerals can form when solutions evaporate. |
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Definition
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Term
| True/False? If lava cools quickly, it forms minerals with small crystals. |
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Definition
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Term
| True/False? The map of an ore deposit helps miners decide how to mine the ore. |
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Definition
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Term
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Definition
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Term
| What is calcite used for? |
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Definition
| Microscopes and other optical equipment. |
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Term
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Definition
| Watches and other timepieces. |
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Term
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Definition
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Term
| What term describes a mineral's ability to split easily along flat surfaces? |
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Definition
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Term
| What term describes a mineral's ability to glow under ultraviolet light? |
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Definition
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Term
| What term describes the way a mineral looks when it breaks? |
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Definition
| Fracture - it will not break evenly. |
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Term
| The term for the color of a mineral's powder. |
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Definition
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Term
| What is the term for a ranking of minerals from the softest to the hardest? |
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Definition
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Term
| The term for the repeating pattern of a mineral's particles in a solid. |
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Definition
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Term
| A substance composed of a single kind of atom. |
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Definition
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Term
| A rounded hollow rock that is often lined with mineral crystals. |
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Definition
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Term
| A mixture in which one substance is dissovled in another. |
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Definition
| Solution - like salt dissolved in water. |
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Term
| Much of the world's copper is contained in this mineral ore. |
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Definition
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Term
| A rock that contains a metal or economically useful material. |
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Definition
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Term
| A solid mixture containing at least one metal. |
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Definition
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Term
| Any hard, colorful mineral that has a brilliant or glassy luster. |
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Definition
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Term
| The process in which an ore is melted to separate the useful metal from other elements. |
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Definition
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Term
| The softest known mineral. |
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Definition
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Term
| A solid with flat sides that meet at sharp edges and corners is called? |
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Definition
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Term
| A substance that keeps its shape because its particles can't flow easily. |
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Definition
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Term
| Why does the superstition exist that the Hope Diamond is bad luck to own? |
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Definition
| A lot of people who owned it died violent and odd deaths. Misfortune happened to a lot of owners, like overthrowing of government, divorce, and illness. |
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Term
| What five qualities MUST something have in order to be called a mineral? |
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Definition
| 1. Naturally occurring; 2. inorganic; 3. solid; 4. crystal structure; 5. definite chemical composition |
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Term
| Why can't color alone be used to identify most minerals? |
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Definition
| A lot of minerals are the same or similar colors. Color can be misleading. It might be one color on the outside, but its streak may be a totally different color. The streak will tell the TRUE inside color and is better to use. |
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Term
| What can affect the size of crystals formed from magma? |
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Definition
| The rate at which it cools can affect it. If it cools slowly the crystals will be larger. The amount of gas the magma has can affect crystal size. Often very quick drying magma with a lot of gas can have NO crystals. The chemical composition of the magma can affect the crystal size. |
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Term
| What does synthetic mean? |
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Definition
| man-made; Man-made gems are NOT minerals!! They are not naturally occurring. |
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