earths materials

Download EARTHS MATERIALS

Post on 24-Feb-2016

33 views

Category:

Documents

0 download

Embed Size (px)

DESCRIPTION

EARTHS MATERIALS. ROCKS AND MINERALS. MINERALS VS ROCKS. MINERAL is a naturally occurring inorganic solid with a crystal structure and a characteristic chemical composition. These are the building blocks of rocks. Granite is an example you can see the individual crystals. - PowerPoint PPT Presentation

TRANSCRIPT

EARTHS MATERIALS

EARTHS MATERIALSROCKS AND MINERALSMINERALS VS ROCKSMINERAL is a naturally occurring inorganic solid with a crystal structure and a characteristic chemical composition.These are the building blocks of rocks. Granite is an example you can see the individual crystals

Properties of MineralsCrystal structure: The arrangement of the atoms.The difference in the crystal structuresbetween these two minerals offers anidea of thediversity ofcrystalline forms.

ColorColor: Some can be deceptive like quartz.

StreakStreak: Scrape the mineral on an unglazed porcelain plate and observe the color.

http://faculty.chemeketa.edu/afrank1/rocks/minerals/streak.htmLusterMetallic/Nonmetallic Luster The luster of a mineral is the way its surface reflects light. Most terms used to describe luster are self-explanatory: metallic, earthy, waxy, greasy, vitreous (glassy), adamantine (or brilliant, as in a faceted diamond). It will be necessary, at least at first, only to distinguish between minerals with a metallic luster and those with one of the non-metallic lusters.

http://faculty.chemeketa.edu/afrank1/rocks/minerals/luster.htmDensityMass / volume

Please see chart on page 667 HardnessHardness is the resistance of a mineral to scratching. Diamond is the hardest mineral with a rating of 10.

Fracture and CleavageFracture: how a mineral breaksCleavage: a type of fracture where the mineral splits along regular well defined planes.

Do Data analysis pg 667Section assessment pg. 669Rocks and the Rock cycleThree major groups of rocksIgneousSedimentaryMetamorphicThis is based on how they are formed

http://sharksrulescienceiscool.weebly.com/rocks--minerals.html

Igneous rockThis rock forms from magmaThis forms when molten material cools and solidifies either inside the earth or on the surface.Intrusive is under the earth, like graniteExtrusive is on the surface of the earth., like basaltVolcanic neckA volcanic neck is a cylindrical-shaped landform standing above the surface created by magma solidifying in the vent of a volcano. Erosion of the sides of the volcano exposes the neck.This is a volcanic intrusion that is exposed as the surrounding soil erodes

SedimentaryA rock that forms over time as sediment is squeezed and cemented together.Three types:ClasticChemicalOrganicClastic RocksMade from the broken fragments of other rocks.

Chemical RockMinerals precipitate out of a solution

Iron Ore is a chemical sedimentary rock that forms when iron and oxygen (and sometimes other substances) combine in solution and deposit as a sediment. Hematite (shown above) is the most common sedimentary iron ore mineral. The specimen shown above is about two inches (five centimeters) across.

http://geology.com/rocks/sedimentary-rocks.shtml20Organic Rock

Coal is an organic sedimentary rock that forms from the accumulation and preservation of plant materials, usually in a swamp environment.

http://geology.com/rocks/sedimentary-rocks.shtmlMetamorphicRock change by temperature, pressure or chemical reaction with hot water.The original rock can be any type. The results is a new type of rock. It can also have a new mineral content. A new texture

Rock Cycle

Rock labhttp://www.rockhounds.com/rockshop/rockkey/index.html#graniteTo help Identify rocks you brought from home.The End