you mentioned that the rocks mentioned are wrong, please let me know
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
you mentioned that the rocks mentioned are wrong, please let me know
Transcribed Image Text:Color Index
Texture
BIN 2
Rock ID
Are the rocks in Bin 2 intrusive or extrusive?
Color
Specific gravity
Proportions of
light and dark
minerals.
Volume percent of minerals
100
90-
80-
70
60
50
40
30
20-
10-
0
70
Sample 2A
Light colored
Low specific gravity
Felsic
Orthoclase
0
Quartz
Muscovite
cm
65
1
Z
cm
Z
in
Na-rich
cm
in
2
Intermediate
Plagioclase
Biotite
Amphibole
Chapter 5 Sample 2A
60
55
Percent of silica by weight
S
Sample 2B
Chapter 5 Sample 2B
S
StraboSpot
3 4 5 6 7
Chapter 5 Sample 2C
S
Mafic
Pyroxene
StraboSpot
http://strabospot org
facebook.com/StraboSporSystem
50
StraboSpot
Sample 2C
Dark colored
High specific gravity
45
Ultramafic
Olivine
40
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