Typical resistivities

Typical resistivities

Table
Typical resistivities
material resistivity (ohm-centimetre)
seawater (18 °C) 21
uncontaminated surface water 2(104)
distilled water 0.2–1(106)
water (4 °C) 9(106)
ice 3(108)
Rocks (in situ)
sedimentary
clay, soft shale 100–5(103)
hard shale 7–50(103)
sand 5–40(103)
sandstone (104)–(105)
glacial moraine 1–500(103)
porous limestone 1–30(104)
dense limestone >(106)
rock salt (108)–(109)
igneous 5(104)–(108)
metamorphic 5(104)–5(109)
Rocks (laboratory)
dry granite 1012
Minerals
copper (18 °C) 1.7(10−6)
graphite 5–500(10−4)
pyrrhotite 0.1–0.6
magnetite crystals 0.6–0.8
pyrite ore 1–(105)
magnetite ore (102)–5(105)
chromite ore >106
quartz (18 °C) (1014)–(1016)
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Universalium. 2010.

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