9Each mineral has characteristic properties that can be used to identify it. LusterStreakColorHardnessDensityCrystal StructureCleavage and FractureSpecial Properties
10Luster- How the material reflects light 3 main types of lusterMetallic-shiny, bright and reflectiveLooks like a metalExample : silver, copper, etc
11Waxy , Greasy or Pearly Pollucite Glassy – example: quartz, tourmalineResinous (like resin or sap from a tree) –example: sphaleriteGreasy or waxy –example: turquoiseSphaleriteNepheline and cancrinite
12Silky Silky – having the look of silk, fine parallel fibers of mineral example: asbestosStelleriteGypsum
13StreakThe color of powder form of the mineral left on a porcelain plate called a streak plate (must be softer than the porcelain)The streak color is not effected by environment so it more reliable than color
14Hardness Hardness How easily the mineral can be scratched Can be compared to the hardness of other minerals by using the Mohs scale
22Color Color by itself IS NOT sufficient to identify a mineral The same mineral can be found in a variety of colorsThings that change colorImpuritiesExposure to air or water (other elements)
23How Do Minerals form??? Organic Process Crystalized from Solutions Crystalized as lava or Magma Cool
24Organic Minerals Different animals produce shells and skeletons. Examples: Clams and Coral can produce calcite.
25Solution MineralsSolution – a mixture in which a substance is dissolved in another.Two Forms of solution MineralsEvaporation- when the water in salt water evaporates it leaves halite.Hot Water solution- Hot water can dissolve elements and compounds that form minerals once the cool.
26Magma and Lava Formations Minerals form once hot magma or lava cool.MagmaCools slowly below the surface and forms large crystals.Example: Quartz, mica and tourmaline
27Properties of Minerals Complete the graphic organizer to show how a geode forms in four steps.
28Log: 1/27Read Lab WorksheetOpen book for HW check. Trade with someone at your table.What is the purpose of determining a minerals streak Color?
30Log: 1/30Read and answer questions form planet diary page 44
31How do Geologist Classify p.45 To Study rock samples geologist observe the rock’s mineral composition, color and texture.
32Mineral Composition and Color Rock can be composed of one mineral or more.Rock- forming minerals.20 different minerals make up majority of the rock found in the Earth Crust.Granite- light color with high silica (made with silicone and oxygen) content.Basalt- dark color, low silica ,tiny mineral crystals
33Texture- look and feel of rocks surface. Grain ShapeGrains-give the rock textureGrain PatternGrain Size
34Rock OriginsRocks are classified by the way they formed.Three Main GroupsRock TypesFormIgneous-Cooling magma or lavaSedimentaryWhen small remains of plants and animals are pressed togetherMetamorphicWhen rock are changed by heat or pressure.Changed by chemical reaction
35Log: 1/31 Read lab What safety things do you need for this lab? How many drops of wax go into the hot water?What is the spoon used for?Show me your ready by prepping your desk.
36Igneous Rock Classification Origin and TextureOriginExampleGrainCrystalsMineral CompositionExtrusiveLava cooling quicklyBasaltFineSmall CrystalsLow in silicaIntrusiveMagma Hardening slowlyGraniteCorseLarge CrystalsHigh silica
37Igneous RockIgneous Rock Origins and TexturesThe texture of igneous rock varies according to its origin.
38Igneous Rock Used Tools Building Materials Kitchen and bathroom countersWalk waysIgneous Rock Used
39Log: 2/6 What are the 3 main types of sedimentary rock? What is weathering?
41Sedimentary Rocks How Sedimentary Rock Forms Sedimentary rocks form through a series of processes over millions of years.
42Sedimentary RocksPut the terms listed in the word bank in the proper sequence to show how mountains can change into sedimentary rock.
43Clastic Rocks Formed from rock fragments Classified by size of fragments
44Sedimentary Rocks pg 55 Organic Rocks How do coal and limestone form? Organic rocks form from living things such as plants and animal remains.
45Chemical Rocks Examples Limestone formed from calcite Halite Forms When minerals dissolved in water solution crystalizes.Evaporation salt water minerals.
46Sedimentary Rocks Form Sequence Major Types Examples Using a sequence of eventsWeathering or erosionDepositionCompactionCementationOrganicChemicalClasticCoal LimestoneLimestone and haliteShale, sandstone, conglomerate
47Metamorphic Rocks Form Major Types Examples Used Igneous or sedimentary change due to heat or pressure.(other metamorphic rocks)Foliated (parallel grains)Non-foliated (random grains)Granite >GneissQuartzite> sandstoneMarbleslate
48Metamorphic Rocks Metamorphic Rock Great heat and pressure can change one type of rock into another. Are these types of rock sedimentary, igneous, or metamorphic? Which rock can form from the other rock?
49The Rock Cycle The Rock Cycle Through melting, weathering and erosion, and heat and pressure, the rock cycle constantly changes rocks from one type into another type.
50The Rock Cycle The Rock Cycle and Plate Tectonics New rock forms on the ocean floor at the mid-Atlantic ridge. Here, two plates move apart.