Geology Reference
In-Depth Information
Table D.3: Values of H
f
, E, grain boundary G
IC
and K
IC
, and for selected
minerals at 298 K, according to Tromans and Meech (2004). - continued from
previous page.
Mineral
Formula
H
f
(kJmol
1
)
E
(GPa)
G
IC
(Jm
2
)
K
IC
(MPa
m
1=2
)
(Jm
2
)
Coesite
SiO
2
-1853.93
157.06
3.0434
0.691
1.5217
Silica (quartz) glass SiO
2
-1851.55
72.845
3.7215
0.521
1.8608
Ice-Ih (270 K)
H
2
O
-977.215
9.03
1.2738
0.1072
0.6369
Ice-Ih (257 K)
H
2
O
-976.867
9.184
1.3031
0.1094
0.6515
Ice-Ih (237.5 K)
H
2
O
-976.296
9.591
1.2742
0.1105
0.6371
End of the table
Table D.4: Shape factors of minerals (Tavares and King, 1998)
Sample
Density,
(g=cm
3
)
Shape fac-
tor,
Surface
rough-
ness factor,
F
r
Alumina
3.6
0.524
1.24
Glass
2.25
0.524
1.24
Apatite
3.21
0.45
1.305
Barite
4.38
0.45
1.305
Chromite
4.42
0.446
1.309
Corundum
4
0.444
1.311
Feldspar
2.61
0.489
1.269
Fluorite
3.1
0.392
1.366
Galena
7.4
0.505
1.256
Gilsonite
1.07
0.367
1.397
Halite
2.32
0.51
1.252
Hematite
5.24
0.408
1.348
Magnetite
5.12
0.52
1.244
Pyrite
4.9
0.411
1.345
Quartz
2.65
0.476
1.281
Resinite
1.09
0.404
1.353
Sphalerite
4.1
0.406
1.35
Basalt
2.59
0.367
1.397
Coal
1.4
0.448
1.307
Copper ore
2.83
0.413
1.343
Gold ore
2.85
0.407
1.349
Iron ore
3.8
0.395
1.363
Limestone
2.72
0.386
1.373
Taconite
3.65
0.363
1.402
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