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Minerals A mineral is a naturally occurring, inorganic solid, with a definite structure and composition.
Mineral formation Magma crystals from solution
Mineral Composition Groups Silicates: contain silicon and oxygen
Mineral Identification (physical properties) Appearance Hardness Luster Color Streak Cleavage vs Fracture
Appearance What does the mineral look like?
Hardness How easily a mineral can be scratched Mohs Hardness scale
Mohs Hardness Scale SoftestHardness of Common Objects Talc1 Gypsum2fingernail (2.5) Calcite3piece of copper (3.5) Fluorite4iron nail (4.5) Apatite5glass (5.5) Feldspar6steel file (6.5) Quartz7streak plate (7) Topaz8 Corundum9 Diamond10 Hardest
Luster How light reflects off the surface of a mineral. Examples: metallic, dull, pearly, glassy, silky
Color The color of the mineral.
Streak The color of a mineral when it is powdered. Use streak with metallic minerals. Hematite
Cleavage vs Fracture Cleavage is when a mineral breaks along a smooth flat surface. If a mineral fractures the break is random or jagged.
Mineral Identification Luster: metal or nonmetal metals we streak test, then test hardness nonmetals we test hardness, starting with glass: is the mineral harder or softer than glass
Use of Minerals Gems: rare and beautiful minerals of value. Ores: contain useful minerals that can be mined at a profit.
Chapter 4 - Minerals.
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Minerals. What is a mineral? A mineral is a naturally occurring, inorganic crystalline solid with a repeating structure and constant chemical composition.
Minerals Unit 3 Notes. What is a mineral? A mineral must be all of the following: Naturally occurring Inorganic solid (not living) Definite structure.
FIRST LESSON IN GEOLOGY Minerals and Mineral Identification.
IDENTIFYING MINERALS. Mineral Identification Geologist test physical and chemical properties to identify minerals Color Luster Texture Streak.
Minerals Section 1 Minerals.
Chapter 3 MINERALS.
DSL #27 Identify each statement as either True or False Fossil fuels formed millions of years ago from decayed plants and animals Most places.
Minerals. What is a Mineral? A mineral is inorganic. Minerals are naturally occurring. Minerals are solids. Minerals have a crystal structure. Minerals.
TOPIC 11 Minerals, Rocks and Mineral Resources
MINERALS Chapter 3. Section 1 What is it? 1. Naturally occurring- formed by processes on or outside Earth with NO input from humans 2. Inorganic- Not.
Minerals. What is a mineral? 5 Characteristics of a mineral Naturally Occurring Naturally Occurring Inorganic (Not Living) Inorganic (Not Living) Always.
CHAPTER 3 MINERALS Minerals - Over 4,000 on Earth - 5 common characteristics 1. Formed naturally.
Unit 5:. Minerals are: Solid Formed in nature Inorganic Of a definite composition Composed of a particular crystal structure.
Minerals. What are minerals? Naturally occurring Inorganic Solid Specific chemical compositions Made up of specific compounds or elements
Minerals Mar Minerals are all non-living solid material most minerals are rare. Like gold common minerals are found throughout the earth’s crust.
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