Color Index: ● Texture: ● ● Felsic (light) Intermediate (medium) Mafic (dark) · Phaneritic (coarse-grained) Aphanitic (fine-grained) Porphyritic (coarse-grained porphyroclasts in a fine-grained matrix) Glassy (no visible grains) Porous (visible holes/bubbles) Color Index Texture BIN 1 Rock ID Color Specific gravity Are the rocks in Bin 1 intrusive or extrusive? Proportions of light and dark minerals Volume percent of minerals 100 90- 80- 70- 60- 50 40 30 20 10 0 Sample 1A felsic 70 phaneritic Light colored Low specific gravity Felsic Orthoclase Quartz Muscovite 65 cm cm in cm Na-r Chapter 5 Sample 1A in S ←S Intermediate Biotite Plagioclase ←S Amphibole Chapter 5 Sample 1B StraboSpot Chapter 5 Sample 1C 60 55 Percent of silica by weight StraboSpot Sample 1B intermediate StraboSpot Phaneritic Mafic Pyroxene 50 Sample 1C mafic phaneritic Dark colored High specific gravity 45 Ultramafic Olivine 40
Color Index: ● Texture: ● ● Felsic (light) Intermediate (medium) Mafic (dark) · Phaneritic (coarse-grained) Aphanitic (fine-grained) Porphyritic (coarse-grained porphyroclasts in a fine-grained matrix) Glassy (no visible grains) Porous (visible holes/bubbles) Color Index Texture BIN 1 Rock ID Color Specific gravity Are the rocks in Bin 1 intrusive or extrusive? Proportions of light and dark minerals Volume percent of minerals 100 90- 80- 70- 60- 50 40 30 20 10 0 Sample 1A felsic 70 phaneritic Light colored Low specific gravity Felsic Orthoclase Quartz Muscovite 65 cm cm in cm Na-r Chapter 5 Sample 1A in S ←S Intermediate Biotite Plagioclase ←S Amphibole Chapter 5 Sample 1B StraboSpot Chapter 5 Sample 1C 60 55 Percent of silica by weight StraboSpot Sample 1B intermediate StraboSpot Phaneritic Mafic Pyroxene 50 Sample 1C mafic phaneritic Dark colored High specific gravity 45 Ultramafic Olivine 40
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
Related questions
Question
geology, need rock IDs and correct the table if you can
Transcribed Image Text:Color Index:
●
Texture:
●
●
Felsic (light)
Intermediate (medium)
Mafic (dark)
·
Phaneritic (coarse-grained)
Aphanitic (fine-grained)
Porphyritic (coarse-grained porphyroclasts in a fine-grained matrix)
Glassy (no visible grains)
Porous (visible holes/bubbles)
Color Index
Texture
BIN 1
Rock ID
Color
Specific gravity
Are the rocks in Bin 1 intrusive or extrusive?
Proportions of
light and dark
minerals
Volume percent of minerals
100
90-
80-
70-
60-
50
40
30
20
10
0
Sample 1A
felsic
70
phaneritic
Light colored
Low specific gravity
Felsic
Orthoclase
Quartz
Muscovite
65
cm
cm
in
cm
Na-r
Chapter 5 Sample 1A
in
S
←S
Intermediate
Biotite
Plagioclase
←S
Amphibole
Chapter 5 Sample 1B
StraboSpot
Chapter 5 Sample 1C
60
55
Percent of silica by weight
StraboSpot
Sample 1B
intermediate
StraboSpot
Phaneritic
Mafic
Pyroxene
50
Sample 1C
mafic
phaneritic
Dark colored
High specific gravity
45
Ultramafic
Olivine
40
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