Geology
Hunter5865
PracticeLab5.pdf
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Take Test: Lab 5 - Metamorphic Rock
Test Information Description
Instructions
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QUESTION 1
Metamorphic Rock Identification
Instructions Observe and record the texture, and composition of each of the rock specimens provided. Describe your own observations; do NOT simply copy the composition or texture shown in your laboratory manual. With the texture and compositional information identify each of the rocks, and then look up the probable parent rocks in your laboratory manual, textbook, or using the table shown below. Use the following guidelines for completing your Metamorphic Rock Identification Form below: 1. Texture – The term texture refers to the size, shape, and orientation of the minerals, particles, and other substances that make up a rock. There are two major textural groups in metamorphic rocks: a. Foliated – In this texture, the mineral crystals in the rock are aligned with each other. This alignment may be displayed as parallel planes along which the rock splits, by overlapping sheets of platy minerals such as micas and chlorite, or by alternating layers of light and dark minerals. Foliation is seen in metamorphic rocks that have minerals with elongate crystals that grow perpendicular to the direction of tectonic stress. This is particularly evident in mica and amphibole minerals. Foliated texture is further subdivided based on the presence or absence of pronounced color banding in the rock. Rocks without distinct alternating bands of light and dark minerals are described as non-color banded, whereas rocks with alternating bands of dark and light minerals are described as color banded. Color banding is also referred to as gneissic foliation. Foliated textures are further described on the basis of the grain (crystal) size in the rock. Examples of complete descriptions of foliated metamorphic rocks include: “foliated, non-color banded, very fine-grained” for slate, “foliated, color-banded, coarse-grained” for gneiss, and “foliated, non-color banded, fine-grained” for phyllite. b. Nonfoliated – In this texture, the mineral crystals in the rock have grown in many directions and most do not show alignment. As a result, nonfoliated rocks commonly appear massive and structureless with only a few lines of impurities through the rock. These rocks may break across, rather than around, mineral grains to produce a scaly surface on the specimen. Nonfoliated textures are further described on the basis of the grain (crystal) size in the rock. Examples of complete descriptions of nonfoliated metamorphic rocks include “nonfoliated, medium-grained” for a quartzite, and “nonfoliated, coarse-grained” or “nonfoliated, medium-grained” for marble.
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You may find the Recognition of Metamorphic Rock Textures flow chart useful in identifying textures in metamorphic rocks.
2. Composition – Indicate the mineral composition of the rock based on observations with a hand lens and, if needed, physical or chemical tests. Identify and list all visible minerals present, including the color of each mineral. 3. Rock Name – Use the Classification of Metamorphic Rocks chart to determine the name for each of the rocks. For schists, include the dominant or distinctive visible mineral. Examples of some of the names given to schists include garnet schist, chlorite schist, biotite schist, and muscovite schist. 4. Probable Parent Rock(s) – All metamorphic rocks are formed by the action of heat and/or pressure on pre-existing igneous, sedimentary, or metamorphic rocks. The pre-existing rock is called either the parent rock or the protolith. Refer to Table 7.2 on page 186 of your textbook and to Section 7.5 on pages 186- 187 of your laboratory manual or to the figure below for parent rock(s). Indicate the name(s) of the probable parent rock(s) in the last column of the metamorphic rock identification form.
1. What are the two main types of metamorphic rock textures?
Foliated and nonfoliated
Metamorphic and non-metamorphic
Fine-grained and coarse-gained
Clastic and biochemical
QUESTION 2
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B.
Sample 1: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
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B.
C.
D.
E.
QUESTION 3
Material Mineral Scratched Fingernail No 2.5 Copper Coin Yes 3.2 Knife Blade Yes 5.1 Window Glass Yes 5.5 Steel File Yes 6.5
Sample 1 Streak: White Relative Hardness
H = 3.0 Breakage: See question below Mineral Color: Colorless or white, yellow, red, purple, brown, gray, etc. or other colors due to impurities Specific Gravity: 2.71 - Density low Luster: Nonmetallic Other Properties: Reacts vigorously in contact with dilute hydrochloric acid (HCl)
Gypsum
Talc
Calcite
Muscovite
Dolomite
1 points Save Answer
QUESTION 4 1 points Save Answer
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Sample 1: What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
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B.
C.
D.
E.
F.
G.
H. I.
J.
K.
QUESTION 5
Sample 1: What is the likely protolith for this rock?
Shale or mudstone
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite Basalt or other mafic rocks
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Peat, lignite, bituminous coal
Basalt, gabbro, or peridotite
Sandstone
Limestone
Dolostone
Conglomerate
Any rock type
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A.
B.
QUESTION 6
Sample 2: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
1 points Save Answer
QUESTION 7
Material Mineral Scratched Fingernail Yes 2.5 Copper Coin Yes 3.2 Knife Blade Yes 5.1 Window Glass Yes 5.5 Steel File Yes 6.5
Mineral 1 Streak: white Relative Hardness Test
Breakage: Look at question below Streak Color: white
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B.
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Mineral Color: white, grey, silvery Specific Gravity: 2.76–3.0 One plane of perfect cleavage Luster: Nonmetallic Other Properties: Cleavage flakes are elastic
Gypsum
Talc
Calcite
Muscovite
Biotite
A.
B.
C.
D.
E.
QUESTION 8
Material Mineral Scratched Fingernail No 2.5 Copper Coin No 3.2 Knife Blade No 5.1 Window Glass No 5.5 Steel File No 6.5
Mineral 2 Streak: white
Relative Hardness Test
H = 7.0 - 7.5 Luster: Nonmetallic
Breakage: Fracture
Color: dark red
Specific Gravity: 3.1–4.3 - Density medium
Other Properties: N/A
Quartz
Amphibole
Pyroxene
Plagioclase
Garnet
1 points Save Answer
QUESTION 9
Sample 2:
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What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Garnet Muscovite schist
Garnet Biotite schist
Garnet chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
QUESTION 10
Sample 2: What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te
Sandstone
Limestone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous
1 points Save Answer
QUESTION 11 1 points Save Answer
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A.
B.
Sample 3: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
QUESTION 12
Material Mineral Scratched Fingernail No 2.5 Copper Coin Yes 3.2 Knife Blade Yes 5.1 Window Glass Yes 5.5 Steel File Yes 6.5
Sample 3 Streak: White Relative Hardness
H = 2.5–3.0 Breakage: One plane perfect cleavage. Mineral Color: Dark brown, greenish-brown, blackish-brown Specific Gravity: 2.7–3.3 - Density medium Luster: Nonmetallic Other Properties: Cleavage flakes are elastic
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B.
C.
D.
E.
Gypsum
Talc
Calcite
Muscovite
Biotite
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
L.
M.
N.
O.
QUESTION 13
Sample 3: What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
1 points Save Answer
A.
B.
C.
D.
E.
F.
G.
QUESTION 14
Sample 3: What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
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H.
I.
J.
K.
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
QUESTION 15 1 points Save Answer
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A.
B.
Sample 4: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
A.
B.
C.
D.
E.
QUESTION 16
Material Mineral Scratched Fingernail No 2.5 Copper Coin No 3.2 Knife Blade No 5.1 Window Glass No 5.5 Steel File No 6.5
Sample 4
Streak: White Relative Hardness
Breakage: Fracture with conchoidal fracture Mineral Color: Colorless or white, yellow, red, purple, brown, gray, etc. or other colors due to impurities Specific Gravity: 2.65 - Density low Luster: Nonmetallic Other Properties: N/A
Olivine
Orthoclase
Plagioclase
Quartz
Calcite
1 points Save Answer
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B.
C.
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H.
I.
J.
QUESTION 17
Sample 4: What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Migmatite
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K.
L.
M.
N.
O.
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
QUESTION 18
Sample 4: What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
1 points Save Answer
QUESTION 19 1 points Save Answer
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A.
B.
Sample 5: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
QUESTION 20
Material Mineral Scratched Fingernail No 2.5 Copper Coin Yes 3.2 Knife Blade Yes 5.1 Window Glass Yes 5.5 Steel File Yes 6.5
Mineral 1 Streak: White Relative Hardness
H = 2.5–3.0 Breakage: One plane perfect cleavage. Mineral Color: Dark brown, greenish-brown, blackish-brown Specific Gravity: 2.7–3.3 - Density medium Luster: Nonmetallic Other Properties: Cleavage flakes are elastic
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B.
C.
D.
E.
Gypsum
Talc
Calcite
Muscovite
Biotite
A.
B.
C.
D.
E.
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I.
J.
K.
L.
M.
N.
O.
QUESTION 21
Sample 5: This rock contains bands of plagioclase, quartz, and biotite. What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
1 points Save Answer
A.
B.
C.
D.
E.
F.
QUESTION 22
Sample 5: What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
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G.
H.
I.
J.
K.
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
A.
B.
QUESTION 23
Sample 6: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
1 points Save Answer
A.
B.
QUESTION 24
Sample 6: This rock has a sheen. What is this metamorphic rock?
Amphibolite
1 points Save Answer
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D.
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Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
QUESTION 25
Sample 6: What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
1 points Save Answer
QUESTION 26 1 points Save Answer
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A.
B.
Sample 7: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
A.
B.
C.
D.
E.
F.
G.
H.
QUESTION 27
Sample 7: This rock contains the mineral serpentine. What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
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J.
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N.
O.
Glaucophane schist (blueschist)
Gneiss
Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
QUESTION 28
Sample 7: What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
1 points Save Answer
QUESTION 29 1 points Save Answer
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A.
B.
Sample 8: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
QUESTION 30
Material Mineral Scratched Fingernail Yes 2.5 Copper Coin Yes 3.2 Knife Blade Yes 5.1 Window Glass Yes 5.5 Steel File Yes 6.5
Sample 8 Streak: Pale green to grey Relative Hardness
H = 2.0 – 2.5
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Breakage: One plane cleavage
Mineral Color: Various shades of green
Specific Gravity: 2.6–3.3 - Density medium Luster: Nonmetallic
Other Properties: Cleavage sheets are flexible but not elastic
Biotite
Muscovite
Amphibole
Chlorite
Talc
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E.
F.
G.
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J.
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L.
M.
N.
O.
QUESTION 31
Sample 8: What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
1 points Save Answer
A.
B.
QUESTION 32
Sample 8: What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
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C.
D.
E.
F.
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I.
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K.
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
A.
B.
QUESTION 33
Sample 9: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
1 points Save Answer
QUESTION 34
Sample 9 Mineral 1
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Material Mineral Scratched
Fingernail No 2.5
Copper Coin No 3.2
Knife Blade No 5.1
Window Glass No 5.5
Steel File Yes 6.5
Streak: white Relative Hardness Test
H = 6.0 - 6.5
Breakage: Two planes of cleavage at 60o and 120o Mineral Color: Black to dark green or brown Specific Gravity: 2.9 - Density medium Luster: Nonmetallic luster Other Properties: This mineral is typically very shiny in appearance. Pyroxene tend to appear dull.
What is Mineral 1?
Biotite
Muscovite
Amphibole
Chlorite
Pyroxene
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B.
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D.
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L.
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N.
O.
QUESTION 35
Sample 9: What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
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A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
QUESTION 36
Sample 9: What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
1 points Save Answer
QUESTION 37 1 points Save Answer
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B.
Sample 10: What is the texture of this metamorphic rock?
Foliated (Slatey cleavage)
Nonfoliated
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QUESTION 38
Sample 10: What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
1 points Save Answer
A.
QUESTION 39
Sample 10: What is the likely protolith for this rock?
1 points Save Answer
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Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
A.
B.
QUESTION 40
Sample 11: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
1 points Save Answer
A.
B.
QUESTION 41
In the above photograph Feature 1 indicates an igneous rock of granitic composition. What does this rock indicate?
The rock is not metamorphic but igneous in origin.
The metamorphic rock has undergone partial melting.
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QUESTION 42
Sample 11: What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Gneiss - Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
1 points Save Answer
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J.
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QUESTION 43
Sample 11: What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
1 points Save Answer
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A.
B.
QUESTION 44
Sample 12: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
1 points Save Answer
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QUESTION 45
Sample 12: What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Gneiss - Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
1 points Save Answer
QUESTION 46
Sample 12:
1 points Save Answer
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B.
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What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
QUESTION 47 1 points Save Answer
6/30/2021 Take Test: Lab 5 - Metamorphic Rock – Physical Geology (...
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A.
B.
Sample 12: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
QUESTION 48
Material Mineral Scratch ed Fingernail No 2.5 Copper Coin No 3.2 Knife Blade Yes 5.1 Window Glass Yes 5.5 Steel File Yes 6.5
Sample 13 Streak: white
Relative Hardness Test
H = 3.0-3.5
Breakage: Three planes of cleavage not at 90o Mineral Color: White, light gray, tan Specific Gravity: 2.84–2.86 - Density low Luster: Nonetallic Other Properties: Reacts quietly to dilute hydrochloric acid (HCl) only when powdered.
Calcite
Quartz
Gypsum
Dolomite
Fluorite
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QUESTION 49
Sample 13: What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Gneiss - Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
1 points Save Answer
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QUESTION 50
Sample 13: What is the likely protolith for this rock?
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
1 points Save Answer
6/30/2021 Take Test: Lab 5 - Metamorphic Rock – Physical Geology (...
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B.
QUESTION 51
Copy of
Sample 14: What is the texture of this metamorphic rock?
Foliated
Nonfoliated
1 points Save Answer
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QUESTION 52
Sample 14: What is this metamorphic rock?
Amphibolite
Quartzite
Slate
Phyllite
Muscovite schist
Biotite schist
Chlorite schist (greenschist)
Glaucophane schist (blueschist)
Gneiss
Gneiss - Migmatite
Marble (calcite)
Marble (dolomite)
Metaconglomerate
Anthracite
Serpentinite
1 points Save Answer
A.
QUESTION 53
Sample 13: What is the likely protolith for this rock?
1 points Save Answer
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B.
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J.
K.
Mudstone, or shale
Mudstone, shale, or slate
Mudstone, shale, slate, or phyllite
Mudstone, shale, slate, phyllite, schist, granite, or diorite
Basalt, gabbro, or perido�te Sandstone
Limestone
Dolostone
Conglomerate
Mafic igneous rocks such as basalt and gabbro, or clay-rich sedimentary rocks
Peat, lignite, bituminous coal
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