Geo Midterm

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    • Fluorite
    • Vitreous Luster
    • Hardness: 4
    • Octahedron Cleavage (4 planes)
    • White Streak
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    • Talc
    • Pearly Luster (Greasy Feeling)
    • Hardness 1
    • Basal Cleavage
    • White Streak
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    • Gypsum:
    • Pearly/Vitrious Luster
    • White, Grey orangish or light brown
    • Basal cleavage
    • Hardness 2
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    • Calcite
    • Vitreous Luster
    • Hardness 3
    • Rhombohedral Cleavage
    • White Streak
    • FIZZES IN ACID!!!!
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    • Apatite
    • Earthy Dark Luster
    • Can be Green, Brown, Blue, Purple
    • Poor Basal Cleavage
    • White Streak
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    • Corrundum
    • Barrel Shaped: some striations
    • Redish
    • Hardness: 9
    • Irregular Fracture
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    • Hematite
    • Earthy Luster
    • Color: Red/brown
    • Hardness: 5-6
    • Irregular Fracture
    • Red Streak
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    • Galena
    • Bright Metallic Luster
    • Shiny lead grey
    • Hardness 2.5
    • Perfect Cubic clevage
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    • Hematite: Metallic
    • Red Streak
    • Color: Steel Grey
    • Irregular Fracture
    • Hardness 5-6
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    • Magnetite
    • Black Color
    • Hardness 6
    • MAGNETIC
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    • Garnet
    • Black Red Soccer Ball:
    • Hardness: 6.5-7.5
    • White Streak
    • Irregular Fracture
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    • Chlorite
    • Hardness: 2.5
    • Vitreous to earthy luster
    • White Streak
    • Basal Cleavage
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    • Halite
    • Vitreous Luster
    • Hardness: 2.5
    • White Streak
    • Cubic Cleavage
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    • Calcite
    • Vitreous Luster
    • Hardness: 2.5
    • White to clear color
    • White streak
    • Rhombohedral Cleavage
    • FIZZES IN ACID
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    • Olivine
    • Vitreous to Earthy Luster
    • Hardness: 6.5-7
    • Greenish yellow color
    • White streak (normally to hard)
    • Fracture: Irregular
    • Green Mass
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    • Augite
    • Vitreous Luster
    • Black-Dark green
    • Hardness: 5-6
    • White Streak
    • Cleavage: 90 degrees
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    • Hornblende
    • Vitreous Luster
    • Hardness 5.5-6
    • Dark grey/blackish rock with yellow bits
    • White Streak
    • Cleavage at 54 and 124
    • Look for 6 sided crystal for mineral
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    • Biotite
    • Vitreous Luster
    • Hardness: 2.5-4
    • Black/brown dark green
    • Cleavage: Basal
    • THIN ELASTIC SHEETS
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    • Ca-Plagioclase
    • Vitreous Luster
    • Hardness: 5.5-6.5
    • Dark grey/grey
    • Streak white
    • Cleavage: 2 at 90 degrees
    • LOOK FOR STRIATIONS
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    • Na-Plagioclase
    • Vitreous Luster
    • Hardness: 5.5-6.5
    • White/salmon
    • Streak white
    • Cleavage: 2 at 90 degrees
    • LOOK FOR STRIATIONS
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    • Orthoclase
    • Vitreous
    • Hardness: 5.5-6.5
    • Clearish Yellow
    • White streak
    • Cleavage: 2 planes at 90 degrees
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    • Muscovite
    • Vitreous to Pearly Luster
    • Hardness: 3.5
    • Clearish Silver yellow
    • White Streak
    • Cleavage: Basal
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    • Name: Granite
    • Texture: Phaneritic Intrusive
    • Silica Content: Felsic
    • Composition: Orthoclase, Quartz
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    • Name: Basalt
    • Texture: Aphanitic
    • Silica Content: Mafic
    • Composition: Ca-Plagioclase, Augite
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    • Name: Peridotite
    • Texture: Phaneritic
    • Silica Content: Ultra-Mafic
    • Composition: Olivine, Augite
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    • Name: Andesite
    • Texture: Aphanitic
    • Silica Content: Intermediate
    • Composition: Na/Ca-Plagioclase, Hornblende
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    • Name: Gabbro
    • Texture: Intrusive Phaneritic
    • Silica Content: Mafic
    • Composition: Ca-Plagioclase, augite (olivine may make it look greenish)
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    • Name: Rhyolite
    • Texture: Extrusive Aphanitic
    • Silica Content: Felsic
    • Composition: Quartz, Orthoclase, Na-Plagioclase
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    • Name: Granite Pegmatite
    • Texture: Intrusive Pegmatitic
    • Silica Content: Felsic
    • Composition: Quartz, Orthoclase, Na-Plagioclase
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    • Name: Scoria
    • Texture: Vesicular
    • Silica Content: Intermediate
    • Composition: Na/Ca-Plagioclase, Hornblende
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    • Name: Rhyolite Tuff Breccia
    • Texture: Pyroclastic
    • Silica Content: Felsic
    • Composition: Quartz, Orthoclase, Na-Plagioclase
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    • Name: Coquina
    • Type: Chemical
    • Texture: Bioclastic
    • Sorting: Poor
    • Fizzes in acid
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    • Name: Arkose
    • Type: Clastic
    • Grain size/shape: sub-rounded/med fine sand
    • Sorting: Poor
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    • Name: Micrite
    • Type: Chemical
    • Texture: Microcrystalline
    • Grain size/shape: silt/clay
    • Fizzes in acid
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    • Name: Chert
    • Type: Chemical
    • Texture: Microcrystalline
    • Grain size/shape: silt/clay
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    • Name: Quartz Sandstone
    • Type: Clastic
    • Grain size/shape: Fine/rounded
    • Sorting: Poor
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    • Name: Shale
    • Type: Clastic
    • Grain size/shape: silt/clay 
    • Thin Layered cleavage
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    • Name: Rock Gypsum
    • Type: Chemical - Crystalline
    • Grain Size/Shape: very fine/sub-angular
    • Gooey in water
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    • Name: Conglomerate
    • Type: Clastic
    • Grain shape/size: sub-rounded pebbles
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    Name: Rock Salt
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    • Name: Oolithic Limestone
    • Type: Chemical - Crystalline
    • Small rounded spheres
    • Fizzes in acid
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    • Name: Greywacke
    • Type: Clastic
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    • Name: Fossiliferous Limestone
    • Type: Chemical - Crystalline
    • Has fossils in it
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    • Name: Dolostone
    • Type: Chemical - Crystalline
    • Silt/clay
    • Reacts to acid 
    • has deep holes
Author
PLAINE
ID
360557
Card Set
Geo Midterm
Description
Updated