tabel 1 kerentanan magnet dalam beberapa batuan dan mineral
TRANSCRIPT
Tabel 1 Kerentanan magnet dalam beberapa batuan dan mineral (Telford, 1990., dan Parasnis, 1973).
Tipe
BatuanKerentanan
(x 103)
Tipe
MineralKerentanan
(x 103)
Dolomite
0 – 0.9
Graphite
0.1
Limestones
0 – 0.3
Quartz
-0.01
Sandstones
0 – 20
Rock salt
-0.01
Shales
0.01 – 15
Gypsum
-0.01
Amphibolite
0.7
Calcite
-0.001 – 0.01
Schist
0.3 – 3.0
Coal
0.02
Phyllite
1.5
Clays
0.2
Gneiss
0.1 – 25
Chalcopyrite
0.4
Quartzite
4.0
Siderite
1 – 4
Serpentine
3 – 17
Pyrite
0.05 – 5
Granite
0 – 50
Limonite
2.5
Rhyolite
0.2 – 35
Hematite
0.5 – 35
Dolorite
1 – 35
Chromite
3 – 110
Diabase
1 – 160
Ilmenite
300 – 3500
Porphyry
0.3 – 200
Magnetite
1200 – 19200
Gabbro
1 – 90
Basalts
0.2 – 175
Diorite
0.6 – 120
Peridotite
90 – 200
Tipe
BatuanKerentanan
(x 103)
Tipe
MineralKerentanan
(x 103)
Andesite
160
Porfiri
0.22 – 210