Geology Lab Test 1

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Olivine.
Luster: nonmetallic.
Hardness: 6.5 to 7.
Streak: none.
Breakage: fracture
Color: greenish

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Terms in this set (56)

Olivine.
Luster: nonmetallic.
Hardness: 6.5 to 7.
Streak: none.
Breakage: fracture
Color: greenish

$Image: Olivine. Luster: nonmetallic. Hardness: 6.5 to 7. Streak: none. Breakage: fracture Color: greenish$

Pyroxene
Luster: nonmetallic
Hardness: 6
Streak: none
Breakage: 2d @90 degrees
Color: Black

Biotite
Luster: nonmetallic
Hardness: 2.5-3
Streak: none
Breakage: 1 perfect cleavage
Color: dark green/black

Plagioclase
Luster: nonmetallic
Hardness: 6
Streak: none
Breakage: 2 good cleavages
Color: light blue/white

Muscovite
Luster: nonmetallic
Hardness: 2.5
Streak: white
Breakage: 1 perfect cleavage
Color: clear/translucent

Orthoclase
Luster: nonmetallic
Hardness: 6
Streak: none
Breakage: 2 good cleavages
Color: pink, red, brown

Quartz
Luster: nonmetallic
Hardness: 7
Streak: none
Breakage: fracture
Color: light colored (pink, smoky, blue, etc.)

$Image: Quartz Luster: nonmetallic Hardness: 7 Streak: none Breakage: fracture Color: light colored (pink, smoky, blue, etc.)$

Gypsum
Luster: nonmetallic
Hardness: 2
Streak: white
Breakage: 1-3 cleavages
Color: clear/white

Calcite
Luster: nonmetallic
Hardness: 3
Streak: white
Breakage: 3 cleavages
Color: white (has impurities)
Rhombus shaped

Halite
Luster: nonmetallic
Hardness: 2.5
Streak: white
Breakage: cubic cleavage
Color: clear/white
Salty

Talc Luster: nonmetallic Hardness: 1 Streak: white Breakage: 1 cleavage Color: goldish white Pearl likeChlorite Luster: nonmetallic Hardness: 2-2.5 Streak: green Breakage: 1 cleavage Color: Greenish/BlackGarnet Luster: nonmetallic Hardness: 7.5 Streak: none Breakage: fracture/ 12-24 sided crystals Color: brownish greenGarnet Luster: nonmetallic Hardness: 7.5 Streak: none Breakage: fracture/ 12-24 sided crystals Color: reddish brownFluorite Luster: nonmetallic Hardness: 4 Streak: white Breakage: 4 cleavages Color: purpleLimonite Luster: nonmetallic Hardness: 1-5 Streak: orange brown Breakage: fracture Color: yellow brown Looks like petrified woodGalena Luster: metallic Hardness: 2.5 Streak: grey/black Breakage: perfect cubic cleavage Color: dark grey/ black High densitySphalerite Luster: metallic Hardness: 4 Streak: PALE yellow Breakage: perfect cleavage Color: pale yellowHematite Luster: submetallic Hardness: Streak: reddish brown Breakage: fracture Color: brownHematite Luster: nonmetallic Hardness: Streak: reddish brown Breakage: fracture Color: RedMagnetite Luster: nonmetallic Hardness: 6 Streak: black Breakage: fracture Color: black MagneticPyrite Luster: metallic Hardness: 6 Streak: black Breakage: fracture Color: brass yellow Fools goldDolomite Luster: nonmetallic Hardness: 3.5 Streak: none Breakage: 3 cleavages Color: yellow/brown Powder reacts with HClSulfur Luster: nonmetallic Hardness: 2.5 Streak: yellow Breakage: fracture Color: pale yellow smells like sulfurCorundum Luster: nonmetallic Hardness: 9 Streak: none Breakage: some cleavage Color: red/brown/blackApatite Luster: nonmetallic Hardness: 5 Streak: pale colored Breakage: poor cleavage Color: green brownGraphite Luster: nonmetallic Hardness: 1-2 Streak: black Breakage: 1 cleavage Color: dark grey/ black low density- smudges easilyGranite Igneous Texture: Phaneritic Felsic: 75%- quartz, k-feldsapr Mafic: 25%- amphiboleDiorite Igneous Texture: Phaneritic Felsic: 50%- plagioclase Mafic: 50%- biotite, amphiboleGabbro Igneous Texture: Phaneritic Felsic: 5%- plagioclase Mafic: 95%- pyroxene, amphibole, olivineBasalt Igneous Texture: Aphanitic Felsic: 0 Mafic: 100%- pyroxene, amphibole, olivineAndesite Igneous Texture: Aphanitic Felsic: 40%- plagioclase Mafic: 60%- biotite, pyroxeneAndesite Porphyry Igneous Texture: Aphanitic with phenocryst Felsic: 30%- plagioclase Mafic: 70%- biotite, pyroxeneRhyolite Igneous Texture: Aphanitic Felsic: 100%- Quartz, orthoclase Mafic: 0Obsidian Igneous Texture: Glassy No MineralsScoria Igneous Texture: Vesicular No Minerals Dark ColoredPumice Igneous Texture: Vesicular No Minerals Light ColoredShale Sedimentary Texture: Clay (very fine grained) Mineral(s): quartz and clay ClasticQuartz Sandstone Sedimentary Texture: Sand (med grained) Mineral(s): quartz with minor accessory minerals ClasticGraywacke Sedimentary Texture: sand (med grained) Mineral(s): quartz and rock fragments ClasticConglomerate Sedimentary Texture: Gravel (coarse grained) Mineral(s): Rounded fragments- quartz and chert ClasticBreccia Sedimentary Texture: Gravel (coarse grained) Mineral(s): Angular fragments- quartz and chert ClasticChalk Sedimentary Texture: clay soft Mineral(s): calcite Non-Clastic positive HCl reactionMicrite Sedimentary Texture: micro crystalline Mineral(s): calcite Non-Clastic Positive HCl reaction Conchoidal Fracture ***Don't mistake for chert***Fossiliferous Limestone Sedimentary Texture: abundant fossils Mineral(s): calcite Non-Clastic Visible shells/fossils positive HCl reactionDolostone Sedimentary Texture: small holes Mineral(s): calcite Non-Clastic Positive HCl reactionChert Sedimentary Texture: microcrystalline Mineral(s): quartz Non-Clastic Does NOT react with HCl Very dense, feels waxyRock Gypsum Sedimentary Texture: fine crystalline Mineral(s): gypsum Non-Clastic Can scratch with fingernailSlate Metamorphic Texture: foliated Minerals: chlorite, micaPhylite Metamorphic Texture: Foliated Minerals: mica, chlorite, quartzSchist Metamorphic Texture: Foliated Minerals: pyroxene, amphibole, quartz, mica, chloriteGneiss Metamorphic Texture: foliated Minerals: feldspar, quartz, amphibole, pyroxene Distinct bandsGneiss Metamorphic Texture: foliated Minerals: mica, quartz, amphibole, pyroxeneQuartzite Metamorphic Texture: Non foliated Minerals: quartzMarble Metamorphic Texture: non foliated Minerals: calcite, dolomite (limestone)Schist Metamorphic Texture: Foliated Minerals: quartz, feldspar, amphibole, pyroxene, mica

Geology Lab Test 1

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