Geology Reference
In-Depth Information
25
ı
C,
P
Table 1.1
Main crust and mantle minerals and mechanical parameters at
STP
conditions (
T
D
D
0.1 MPa)
¡
[Kg m
3
]
v
p
[ms
1
]
v
s
[ms
1
]
Mineral
Sym
Formula
K
S
[GPa]
[GPa]
Ref.
Quartz
Qtz
SiO
2
2,646
5,980
4,040
37
43
2
K
-Feldspar
Kfs
KAlSi
3
O
8
2,543
6,080
3,290
57
28
2
Plagioclase
Pl
NaAlSi
3
O
8
CaAl
2
Si
2
O
8
2,751
6,820
3,580
81
35
2
Hornblende
Hbl
(Ca,Na)
2-3
(Mg,Fe,Al)
5
Si
6
(Al,Si)
2
O
22
(OH)
2
3,224
7,090
4,030
92
52
2
Biotite
Bt
K(Mg,Fe)
3
AlSi
3
O
10
(OH)
2
2,765
5,210
2,770
47
21
2
Muscovite
Ms
KAl
2
(Si
3
Al)O
10
(OH)
2
2,804
5,520
3,180
48
28
2
Clinopyroxene
Cpx
Ca(Mg,Fe)Si
2
O
6
3,277
C
380XFe
7,710
4,370
113
C
7XFe
67
6XFe
1
Orthopyroxene
Opx
(Mg,Fe)SiO
3
3,204
C
799XFe
7,870
4,700
104
77
24XFe
1
Olivine
Ol
(Mg,Fe)
2
SiO
4
3,222
C
1,182XFe
8,310
4,800
129
82
31XFe
1
Garnet
Grt
(Fe,Mg)
3
Al
2
(SiO
4
)
3
3,562
C
758XFe
8,657
4,821
175
C
1XFe
90
C
8XFe
1
Garnet
Grt
Ca
3
(Al,Fe)
2
(SiO
4
)
3
3,595 C 265XFe
9,250
5,450
169 11XFe
104 14XFe
1
“-Spinel
“-Sp
(Mg,Fe)
2
SiO
4
3,472
C
1,240XFe
9,410
5,480
174
114
41XFe
1
”-Spinel
”-Sp
(Mg,Fe)
2
SiO
4
3,548
C
1,300XFe
9,530
5,540
184
119
41XFe
1
Spinel
Spl
FeCr
2
O
4
5,090
8,209
4,542
203
105
3
Spinel
Spl
MgAl
2
O
4
3,585
9,670
5,440
197
108
3
Spinel
Spl
FeAl
2
O
4
4,280
8,630
4,400
210
84
3
Perovskite
1,070XFe 10,066 5,743 266 153 1
Perovskite Pv CaSiO
3
4,130 9,763 5,501 227 125 1
Magnesiowüstite Mw (Mg,Fe)O 3,583
C
2,280XFe 7,732 4,425 163
8XFe 131
77XFe 1
¡ is density.
v
p
and
v
s
are, respectively, the
P
and
S
waves velocity.
K
S
is the adiabatic bulk modulus. is the rigidity modulus.
X
Fe
is the molar fraction of iron:
X
Fe
Pv
(Mg,Fe)SiO
3
4,104
C
D
[Fe]/([Mg]
C
[Fe]). Ref.: [1]
D
Duffy and Anderson (
1989
); [2]
D
Hacker and Abers (
2004
); [3]
D
Lee (
2003
).
v
p
and
v
s
of mantle minerals are either from Anderson
(
1989
) or determined by elastic moduli and density
