We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byFrida Molden
Modified over 2 years ago
Unit 9 Rocks and Minerals
Topic: Minerals Key terms: Matter Elements Atoms Mineral
Mineral Uses Quartz
How many different minerals are there? 4,000 known minerals, according to the International Mineralogical Association International Mineralogical Association International Mineralogical Association
Elements ---- ---- ----
Atoms mmmmade of three particles PPPProtons=Positive(+) NNNNeutrons=Neutral(0) EEEElectrons=Negative(-)
Take out ESRT pg 1
Atoms make up Elements… Elements make up MINERALS!!!
What is a mineral? 1)Solid 2)Inorganic: not, or never was, living
3) Definite chemical composition Elements that make up the mineral Example: Mineral Halite (aka Salt) Composition: Sodium (Na) & Chlorine (Cl) Chemical Formula: NaCl
4) Crystalline structure The pattern of molecules repeated throughout the mineral – gives a mineral it’s properties! gives a mineral it’s properties!
5) Naturally Occurring
Silicon Tetrahedron - -
Review: What is a mineral? ---- ---- ---- ---- ----
Final Question: Can water, H 2 O, ever be considered a mineral? If so, how?
Topic: Identifying Minerals Key Term: Color Streak Hardness Luster Cleavage Fracture
Look at the last page of ESRT to find the minerals you need to know.
On the mineral chart Elements that make up the minerals
Tests for Identifying Minerals
Test 1: Color Test
*Color is not the best property to use when identifying a mineral. Why? 1) - 2) -
Test 2: Luster Luster -
Metallic - Non-metallic -
Luster Metallic dullglassypearly Non-Metallic All minerals
Luster Examples of Metallic Luster Pyrite, Galena
Luster Examples of Non- Metallic Luster (Dull) Earthy Corundum Glassy Quartz Pearly Opal
Find Hematite on mineral chart What is unique about hematite’s luster? Either
Test 3: Streak Test The streak - We use a streak plate
Where is streak on the chart? Look under Distinguishing characteristics to find streak
Pyrite is a brassy yellow, but in a powder is green-black
What is the color of hematite's streak?
Test 4: Hardness Test A mineral’s hardness is -
Hardness Test Mohs Scale of Hardness (1-10) 1.Talc6.Feldspar 2.Gypsum7.Quartz 3.Calcite8.Topaz 4.Fluorite9.Corundum 5.Apatite10.Diamond
Hardness Tools Fingernail 2.5 Penny 3.5 Iron Nail4.5 Glass Plate5.5 Steel File6.5 Streak Plate7
Hardness Test Talc = hardness of 1 Diamond = hardness of 10
Test 5: The way a mineral breaks 1) Cleavage -
Basal Cleavage: Mica
Cubic Cleavage: Halite
Rhombohedral Cleavage: Calcite
2) Fracture- - Rose Quartz
Splintery Fracture: Hornblende
Conchoidal Fracture: Obsidian
The check indicates if a mineral has fracture or cleavage
Watch out for Crystals Pyrite – looks like flat surfaces, however these crystals did not break, they grew into this shape.
Other identification tests
HCl Acid Calcite Acid Test for Calcite and Dolomite HCl— bubbles or fizzes
Smell Test for Sulfur Smells like rotten eggs
Magnetism for Magnetite
Taste Test for Halite
Optical Properties – Double refraction Mineral – Iceland Spar Calcite
Fluorescence: some minerals glow under ultraviolet light Franklinite from Franklin, New Jersey
Compare Diamond and Graphite Graphite Chemical Composition is Carbon (C) Diamond Can we use a diamond like we use graphite?
Arrangement of atoms
Aim: What are the properties of minerals? What is a mineral? A mineral is a: naturally occurring, inorganic, solid that has a crystal structure and a.
Aim: How can we identify minerals?
What is a Mineral?. To be considered a mineral, the object MUST possess all 5 of the following characteristics…
What are minerals? Think about the last time you walked on dirt.
Chapter 2: Properties of Minerals (2.3)
Open Book - Answer questions Page 95: 1 and 2 Page 101: 2 and 3 Page 107: 30, 31.
Minerals The Building Blocks of Rocks. Natural Beauties The Hope Diamond.
Properties of Minerals
Minerals. 4 requirements to be considered a mineral: 1. Naturally Occurring (not manmade)
Chapter 3 Minerals. Mineral Naturally occurring Inorganic Solid Definite structure – crystalline – solid in which the atoms are arranged in a repeating.
Minerals. What is a Mineral? Solid Solid Naturally Occurring Naturally Occurring Inorganic Inorganic Definite Crystal Structure Definite Crystal Structure.
Do Now / Vocab Mineral Naturally occurring, inorganic solid, with specific chemical composition and crystal structure Crystal Solid where atoms or.
From The Town Of Bedrock, Its a Place Right Out Of History.
Minerals, Rocks, and Mineral Resources
What is a mineral? Naturally occurring Naturally occurring Solid substance Solid substance Orderly crystalline structure Orderly crystalline structure.
© 2017 SlidePlayer.com Inc. All rights reserved.