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Chapter 9.2 Minerals

Minerals Vocabulary Ch 9.2 GHS Earth Science

QuestionAnswer
Mineralogists Earth Scientists who use special equipment to identify minerals
Characteristics of Minerals Color, Luster, Streak, Cleavage and Fracture, Hardness, Crystal Shape, Density
Luster Light reflected from the surface of a mineral
Streak The color of the mineral in powdered form
Cleavage Tendency to split easily along the flat surfaces
Fracture Minerals break unevenly into irregular pieces
Hardness The ability to resist scratching; Mohs hardness scale (1-10)
Density The ratio of mass to volume; D = m/V
Special properties of minerals Magnetism, Flourescence and Phosphorescence, Double refraction, Radioactivity
Flourescence Ability to glow under ultraviolet light
Phosphorescence Minerals that continue to glow after being exposed to ultraviolet light
Refraction Light rays beng as they pass through transparent minerals
Double refraction Produces a double image of any object viewed through them
Created by: kahereth
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