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What is a Mineral
What is a Mineral? A mineral is a naturally occurring, inorganic solid with a specific chemical composition and a definite crystalline structure.
Characteristics of a Mineral1. Solid 2. Naturally occurring 3. Inorganic (not made by living things) 4. Definite chemical composition 5. Definite crystal structure.
Crystal Systems There are six crystal systems: Cubic TetragonalHexagonal Orthrombic Monoclinic Triclinic
Ways that minerals can formMinerals can form in one of two ways: From magma From a solution
Minerals from Magma Magma is the molten or melted material found beneath Earth’s surface. Differences in density will force some magma up toward the Earth’s surface.
Minerals from Magma ContinuedIf the magma cools quickly, the mineral crystals will be small. If the magma cools slowly, the mineral crystals will be large.
Minerals from SolutionsMinerals can form from solutions in one of two different ways: Crystallization from a supersaturated solution. Evaporation of liquid from a supersaturated solution.
Mineral Groups There are about 3000 minerals that can be found in the Earth’s crust. Only 30 of these minerals are common. Most common minerals are referred to as rock forming minerals.
Mineral Groups ContinuedMost of the minerals found in the Earth’s crust are made of 8 common elements 1. O 5. Ca 2. Si 6. Na 3. Al 7. K 4. Fe 8. Mg
Mineral Groups ContinuedThe mineral groups we will concentrate on in this class are as follows: Silicates Carbonates Oxides Sulfides Sulfates Halides Native Elements
Silicates Silicates are compounds that contain silicon and oxygen.Make up approximately 96% of the minerals found. Feldspar and Quartz are silicates.
Carbonates Carbonates are minerals composed of one or more metallic elements with carbonate. Carbonate = CO3 Calcite, dolomite and rhodochrosite are carbonates.
Carbonates Continued Carbonates are the primary minerals find in rocks such as limestone, coquina, and marble.
Oxides Oxides are compounds of oxygen and a metal.Hematite and Magnetite are common iron oxides.
Sulfides Sulfides contain sulfur plus one or more other elements.Pyrite is an example of a sulfide.
Sulfates Sulfates contain the compound sulfate. Sulfate = SO4Anhydrite is an example of a sulfate.
Halides Halides are made up of chloride or fluoride combined with calcium, sodium or potassium. Halite is an example of a halide.
Native element mineralsNative element minerals are made up of one element only. Silver and Copper are examples of native element minerals.
Objectives Vocabulary Define a mineral. Describe how minerals form.
Unit 5: Minerals.
Minerals Write down what you know about minerals.
With a partner near you…
2.2 Minerals Textbook, pp
Minerals. A Mineral is… Naturally Occurring – made by nature – not by man.
What is a Mineral?.
A mineral is a naturally occurring, inorganic, solid, with a definite chemical composition, and an ordered atomic arrangement. Minerals are naturally.
Ch 4. Minerals.
Mineral Formation. Methods of Formation Crystals may form from magma cooling Cools slow = large crystals Cools quickly = small crystals Confined space.
What is a Mineral? Identifying Minerals.. You may think that all minerals look like gems. But, in fact, most minerals look more like rocks. Does this.
MINERALS What are minerals used for? Have you ever put salt on your food? Chromoly bicycle frames Jewelry (silver, gold, precious stones) Computer chips.
Chapter 3 Minerals of Earth’s Crust
Introduction to Minerals
Earth Science 2.2 Minerals.
Earth Science Notes MINERALS. Definition of a Mineral A mineral is a naturally occurring, inorganic, homogeneous solid with a definite chemical composition.
Minerals Chapter 4. What is a mineral Mineral- a naturally occurring, inorganic solid with a specific chemical composition and a definite crystalline.
Kinds of Minerals.
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