Resistivitas Batuan Dan Mineral

RESISTIVITAS BATUAN DAN MINERAL Tabel 1. Resistivitas Batuan Beku dan Metamorf (Telford, dkk., 1976). Rock Type Granite Granite Porphyry Feldspar Porphyry Albite Syenite Diorit Diorit Porphyry Porphyryte Carbonatized Porphyry Quartz Porphyry Quartz Diorite Porphyry (Various) Dacite Andesite Diabase Porphyry Diabase (various) Lavas Gabbro Basalt Olivine Norite Peridotite Hornfels Schists (calcareous and mica) Tuffs Graphite Schist Slates (various) Gneiss (various) Marble Skarn Quarzites (various)

Resistivity Range (Ωm) 3 x 10 - 106 4.5 x 103 (wet) – 1.3 x 106 (dry) 4 x 103 (wet) 3 x 102 (wet) – 3.3 x 103 (dry) 102 - 106 104 - 105 1.9 x 103 (wet) – 2.8 x 104 (dry) 10 – 5 x 104 (wet) – 3.3 x 103 (dry) 2.5 x 103 (wet) – 6 x 104 (dry) 3 x 102 – 9 x 105 2 x 104 – 2 x 106 (wet) – 1.8 x 105 (dry) 60 - 104 2 x 104 (wet) 4.5 x 104 (wet) – 1.7 x 105 (dry) 103 (wet) - 1.7 x 105 (dry) 20 – 5 x 107 102 – 5 x 104 103 - 106 10 – 1.3 x 107 (dry) 103 – 6 x 104 (wet) 3 x 103 (wet) – 6.5 x 103 (dry) 8 x 103 (wet) – 6 x 107 (dry) 20 - 104 2 x 103 (wet) - 105 (dry) 10 - 102 6 x 102 – 4 x 107 6.8 x 104 (wet) – 3 x 106 (dry) 102 – 2.5 x 108 (dry) 2.5 x 102 (wet) – 2.5 x 108 (dry) 10 – 2 x 108 2

Tabel 2. Resistivitas Batuan Sedimen (Telford, dkk., 1976). Rock Type Consolidated Shales Argillites Conglomerates Sandstones Limestones Dolomite Unconsolidated Wet Clay Marls Clays Alluvium and Sands Oil Sands

Resistivity Range (Ωm) 20 – 2 x 103 10 – 8 x 102 2 x 103 - 104 1 – 6.4 x 108 50 - 107 3.5 x 102 – 5 x 103 20 3 – 70 1 – 100 10 – 800 4 - 800

Tabel 3. Resistivitas logam dan Unsur (Telford, dkk., 1976) Logam/Unsur Range Antimony Arsenic Bismuth Copper Gold Graphite Iron Lead Mercury Molybdenum Nickel Platinum Silver Sulphur Tellurium Tin Uranium Zinc

5 x 10-7 – 10

107 - 1016 10-4 – 2 x 10-3

Resistivity (Ωm) Average 4.5 x 10-7 2.2 x 10-7 1.2 x 10-6 1.7 x 10-8 2.4 x 10-8 10-3 10-7 2.2 x 10-7 9.6 x 10-7 5.7 x 10-8 7.8 x 10-8 10-7 1.6 x 10-8 1014 10-3 1.1 x 10-7 3 x 10-7 5.8 x 10-8

Tabel 4. Resistivitas Mineral (Telford, dkk., 1976). Mineral Argentite Bismuthinite Covellite Chalcocite Chalcophyrite Bornite Marcasite Pyrite Pyrrhotite Cinnabar Molybdenite Galena Millerite Stannite Stibnite Sphalerite Cobaltite Smaltite Arsenopyrite Niccolite Sylvanite Bauxite

Resistivity (Ωm) Range Average -3 4 2 x 10 - 10 1.7 x 10-3 18 – 570 3 x 10-7 – 8 x 10-5 2 x 10-5 -5 3 x 10 – 0.6 10-4 1.2 x 10-5 – 0.3 4 x 10-3 -5 2.5 x 10 – 0.5 3 x 10-3 10-3 – 3.5 5 x 10-2 -5 2.9 x 10 – 1.5 3 x 10-1 -6 -2 6.5 x 10 – 5 x 10 10-4 2 x 107 -3 6 10 - 10 10 3 x 10-5 – 3 x 102 2 x 10-3 3 x 10-7 10-3 – 6 x 103 105 - 1012 5 x 106 1.5 - 107 102 -4 -1 3.5 x 10 – 10 5 x 10-5 -5 2 x 10 - 15 10-3 -7 -3 10 – 2 x 10 2 x 10-5 4 x 10-6 – 2 x 10-5 2 x 102 – 6 x 10-3

Tabel 5. Harga Resistivitas Spesifik Batuan (Suyono, 1978). Material Air Pemasukan Airtanah Silt – Lempung Pasir Pasir dan kerikil Batu Lumpur Batu pasir Konglomerat Tufa Kelompok Andesit Kelompok Granit Kelompok Chert, Slate

Resistivitas (Ωm) 80 – 200 30 – 100 10 – 200 100 – 600 100 – 1000 20 – 200 50 – 500 100 – 500 20 – 200 100 – 2000 1000 – 10000 200 – 2000