Geology Tutorial exam (copy)

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56 Terms

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Galena
Mineral, Metallic, black streak, very soft, 90 cleavage, high specific gravity
Mineral, Metallic, black streak, very soft, 90 cleavage, high specific gravity
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Magnetite
Mineral, Sub metallic, black streak, can be cut by a knife, magnetic
Mineral, Sub metallic, black streak, can be cut by a knife, magnetic
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chalcopyrite
Mineral, Submetallic (gold), Greenish black streak, can be cut by a penny, low specific gravity
Mineral, Submetallic (gold), Greenish black streak, can be cut by a penny, low specific gravity
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Graphite
Mineral, submetallic, dark grey streak, can be cut by a nail, low specific gravity
Mineral, submetallic, dark grey streak, can be cut by a nail, low specific gravity
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Pyrite
Mineral, submetallic, dark grey streak with a gold tinge, can be cut by a nail, bladed, looks like gold
Mineral, submetallic, dark grey streak with a gold tinge, can be cut by a nail, bladed, looks like gold
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hematite
Mineral, rust-red earthy, red streak, can be but by nail
Mineral, rust-red earthy, red streak, can be but by nail
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Goethite
Mineral, dull, brown yellow streak, can be cut by the knife, round crystal habit, conchoidal
Mineral, dull, brown yellow streak, can be cut by the knife, round crystal habit, conchoidal
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Calcite
Mineral, waxy-vitreous, colorless/white streak, can be cut by the penny, reacts to HCl, (double refraction if see-through)
Mineral, waxy-vitreous, colorless/white streak, can be cut by the penny, reacts to HCl, (double refraction if see-through)
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Talc
Mineral, pearly (or waxy and dull), colorless/white streak, very soft
Mineral, pearly (or waxy and dull), colorless/white streak, very soft
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corundum
Mineral, (brown)Silky Earthy-(pink)vitreous, colorless streak(pink)-brown streak(brown) ,very hard
Mineral, (brown)Silky Earthy-(pink)vitreous, colorless streak(pink)-brown streak(brown) ,very hard
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apatite
Mineral, vitreous, white streak, can be cut by a knife, contains veins of cream colour
Mineral, vitreous, white streak, can be cut by a knife, contains veins of cream colour
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gypsum
Mineral, pearly, white streak, very soft, massive flat habit
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Quartz
Mineral, glassy/silky, no streak, many colours: Colorless, Smoky Gray, Milky White, Pink
Mineral, glassy/silky, no streak, many colours: Colorless, Smoky Gray, Milky White, Pink
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fluorite
Mineral, vitreous, white powder/colourless streak, can be cut by a knife, has a rainbow shine in the light
Mineral, vitreous, white powder/colourless streak, can be cut by a knife, has a rainbow shine in the light
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plagioclase feldspar
Mineral, (supposed to be pearly but looks earthy and waxy), white streak, Can come in multiple colours: Black and grey with a blue shimmer or White w/ brown veins
Mineral, (supposed to be pearly but looks earthy and waxy), white streak, Can come in multiple colours: Black and grey with a blue shimmer or White w/ brown veins
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chlorite
Mineral, dull, White/grey streak, very soft, has orange undertones
Mineral, dull, White/grey streak, very soft, has orange undertones
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biotite
Mineral, vitreous, glass shard like streak, very thin looks like film
Mineral, vitreous, glass shard like streak, very thin looks like film
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muscovite
Mineral, vitreous, white streak, very thin looks more like tin foil, has green in it
Mineral, vitreous, white streak, very thin looks more like tin foil, has green in it
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kyanite
Mineral, vitreous, white streak, has copper red veins, long crystal habit
Mineral, vitreous, white streak, has copper red veins, long crystal habit
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staurolite
Mineral, dull, orange areas streak orange, very hard
Mineral, dull, orange areas streak orange, very hard
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potassium feldspar
Mineral, a dull face with slightly waxy sides, has a sulfur smell when streaked, white streak, can be cut by a nail, has a grey accent colour
Mineral, a dull face with slightly waxy sides, has a sulfur smell when streaked, white streak, can be cut by a nail, has a grey accent colour
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Garnet
Mineral, vitreous with earthy patches, white streak, can be cut by a nail
Mineral, vitreous with earthy patches, white streak, can be cut by a nail
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pyroxene
Mineral, dull, white/grey streak, army grey green with dark grey accents
Mineral, dull, white/grey streak, army grey green with dark grey accents
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amphibole
Mineral, vitreous and earthy, red streak, can be cut by a nail, can contain red
Mineral, vitreous and earthy, red streak, can be cut by a nail, can contain red
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olivine
Mineral, vitreous with earthy bottom, dark grey streak, very hard
Mineral, vitreous with earthy bottom, dark grey streak, very hard
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diorite
Igneous, Phaneritic, equigranularity, intermediate, intrusive
Igneous, Phaneritic, equigranularity, intermediate, intrusive
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Gabbro
Igneous, phaneritic, mafic, intrusive
Igneous, phaneritic, mafic, intrusive
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Obsidian
Igneous, glassy, conchoidal, mafic intrusive
Igneous, glassy, conchoidal, mafic intrusive
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syenite
Igneous, small crystal, phaneritic, equigranularity, felsic, intrusive
Igneous, small crystal, phaneritic, equigranularity, felsic, intrusive
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andesite porphyry
Igneous, Porphyritic, intermediate, intrusive
Igneous, Porphyritic, intermediate, intrusive
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Granite
Igneous, coarse texture, felsic, intrusive
Igneous, coarse texture, felsic, intrusive
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Basalt
Igneous, compact, fine-grained, and glassy, black in color and weather to dark green or brown
Igneous, compact, fine-grained, and glassy, black in color and weather to dark green or brown
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Pumice
Igneous, low specific gravity, contains a lot of empty gas bubbles
Igneous, low specific gravity, contains a lot of empty gas bubbles
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Rhyolite
Igneous, color is relatively light – usually light pink or light gray, is dense, with no bubbles or air pockets
Igneous, color is relatively light – usually light pink or light gray, is dense, with no bubbles or air pockets
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Diabase
Igneous, fine- to medium-grained, dark gray to black, intrusive
Igneous, fine- to medium-grained, dark gray to black, intrusive
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Rhyolite porphyry
Igneous, Porphyritic, color is relatively light – usually light pink or light gray
Igneous, Porphyritic, color is relatively light – usually light pink or light gray
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Scoria
Igneous, no crystals, It is typically dark in color, bubbles
Igneous, no crystals, It is typically dark in color, bubbles
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Breccia
Sedimentary, smooth, pink with black specs, no pores,

chaotic rock type, well sorted
Sedimentary, smooth, pink with black specs, no pores, 

chaotic rock type, well sorted
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conglomerate
Sedimentary, lots of variety of rocks sizes, and colours
Sedimentary, lots of variety of rocks sizes, and colours
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Sandstone
Sedimentary, quartz crystals, yellow/cream coloured, sandy texture
Sedimentary, quartz crystals, yellow/cream coloured, sandy texture
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Shale
Sedimentary, smooth, sheet like cleavage, black or dark brown
Sedimentary,  smooth, sheet like cleavage, black or dark brown
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Coal
Sedimentary, smooth, sheet like cleavage, black or dark brown
Sedimentary, smooth, sheet like cleavage, black or dark brown
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fossiliferous limestone
Sedimentary, dark brown, smooth fossils components, light brown between fossils -small quartz crystals
Sedimentary, dark brown, smooth fossils components, light brown between fossils -small quartz crystals
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micritic limestone
Sedimentary,smooth ,light grey/brown ,silty,conchoidal
Sedimentary,smooth ,light grey/brown ,silty,conchoidal
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coquina
Sedimentary, -variety of colours spanning white to orange -composed of shells -porous -poorly sorted
Sedimentary, -variety of colours spanning white to orange -composed of shells -porous -poorly sorted
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Chert
Sedimentary, conchoidal, Dark grey -smooth -can have fossils
Sedimentary,  conchoidal, Dark grey -smooth -can have fossils
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Dolostone
Sedimentary, plant/shell shaped fossils , light grey, porous
Sedimentary, plant/shell shaped fossils , light grey, porous
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evaporite
Sedimentary, smooth -translucent -white and grey -crystals are a conglomerate
Sedimentary, smooth -translucent -white and grey -crystals are a conglomerate
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Marble
Metamorphic, granoblastic, can see quartz, low grade
Metamorphic, granoblastic, can see quartz, low grade
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quartzite
Metamorphic, quartz and feldspar visible, granoblastic
Metamorphic, quartz and feldspar visible, granoblastic
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schist
Metamorphic, schistose slaty, muscovite biotite and mica visible,
Metamorphic,   schistose slaty, muscovite biotite and mica visible,
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Gneiss
Metamorphic, biotite feldspar staurolite are visible,

gnessic texture
Metamorphic, biotite feldspar staurolite are visible, 

gnessic texture
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Amphibolite
Metamorphic, granoblasitc, biotite feldspar staurolite are visible
Metamorphic, granoblasitc,  biotite feldspar staurolite are visible
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slate
metamorphic, fine grained, clay mineral, slatey
metamorphic, fine grained, clay mineral, slatey
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skarn
metamorphic, granoblastic, Garnet crystal calcite Epidote can be found inside
metamorphic, granoblastic,  Garnet crystal calcite Epidote can be found inside
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folded pyllite
metamorphic, phyllitic slatey, fine grained, pyrite Quartz staurolite andalusite can be found inside
metamorphic,  phyllitic slatey, fine grained,  pyrite Quartz staurolite andalusite can be found inside