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Earth Science Ch. 3

Chapter Test

QuestionAnswer
Gems are prized for their great rarity and beauty
Minerals can be identified based on their physical and chemical properties
Minerals are comprised of one or more ________? Elements
When is a mineral classified as an ore? Profitable and Useful
Five Characteristics of a Minerals Natural occurring, Solid, Definite Chemical Composition, Inorganic, and Crystalline Form
__________________ is one of the softest minerals. Talc
What physical characteristic does Muscovite mica have when peeled off in flat sheets? Cleavage
When would a mineral no longer be classified as an ore? When it can no longer be mined at a profit
Minerals that have a shiny surface are said to have ____________. Metallic luster
______________ is the most common mineral in nails and screws. Iron
Facts about gemstones durable, can be made by humans, valued for their rarity
______________ has a metallic property and is rare. Platinum
Why should you test several properties when identifying minerals? Minerals can share one or more properties
List properties of luster pearly, metallic, glassy
List properties of streak white, black, gray
List properties of cleavage thin sheets
List properties of hardness #1-10 Mohs Hardness
A mineral is an inorganic ______________ with a unique crystal structure. solid
Some minerals are formed when ________ cools. magma
_____________ alone usually is not used to identify a mineral. color
When liquid evaporates, particles of any dissolved minerals stay behind and form ______________. crystals
Tests for hardness and streak help _____________ minerals identify
____________is described as either metallic or nonmetallic. luster
Created by: Jodom
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