P L. Smedley, D.G. Kinniburgh/ Applied Geochemistry 17(2002 )517-568 Table 4 Typical As concentrations in rocks, sediments, soils and other surficial deposits Rock/sediment type As concentration average and/ No of Reference (mg kg") Ultrabasic rocks(peridotite, dunite, 1.5(0.03-15.8) Basic rocks(basalt) 23(0.18-113 Basic rocks(gabbro, dolerite) 1.5(0.06-28) Onishi and Sandell(1955); termediate(andesite, trachyte, latite) 2.7(0.55.8) Baur and Onishi(1969) Intermediate(diorite, granodiorite, syenite) 1.0(0.09-13.4) Boyle and Jonasson(1973) Acidic rocks(rhyolite) 4.3(3. re and Berrow(1982): Acidic rocks(granite, aplite 1.3(0.2-15) Riedel and Eikmann(1986 Acidic rocks(pitchstone (2.2-122) 5.5(2.2-7.6) 5.5(0.7-11) Phyllite/slate 1.1(<0.1-18.5) 63(0.445) 3-15(upto490 Non-marine shale/mudstone 0-12 4.1(0.6-120) 15 Onishi and Sandell (1955); 2.6(0.1-20.1 Baur and Onishi(1969); 21(0.4-188) 5 Boyle and Jonasson(1973); Iron formations and Fe-rich sediment 1-2900 Cronan(1972): Riedel and Evaporites(gypsum/anhydrite 3.5(0.1-10) Eikmann(1986): Welch et al. Coals 0.3-35,000 (1988): Belkin et al. (2000) Bituminous shale(Kupferschiefer 100-900 Unconsolidated sediments arIous 3(0.6-50) Azcue and Nriagu(1995) Alluvial sand (bangladesh) 9(1.06.2) BGS and DPHE (2001) Alluvial mud/clay(Bangladesh) 6.5(2.7-14.7) BGS and DPHE (2001) River bed sediments( Bangladesh) Datta and Subramanian(1997 Lake sediments, Lake Superi 2.0(0.58.0) Allan and Ball(1990) Lake sediments. British Colombia .5(0.944) Cook et al. (1995) Glacial till. British Colom bia 92(1.9170) Cook et al. (1995) World average river sediments Martin and Whitfield (1983) Stream and lake silt(Canada) Boyle and Jonasson(1973) Loess silts, Argentina 5.4-18 Smedley et al. (2002) Continental margin sediments Legeleux et al. (1994 (argillaceous, some anoxic variou 72(0.1-55) Boyle and Jonasson(1973) Peaty and bog 13(2-36 Ure and Berrow (1982) Acid sulphate cid sulphate Soils near sulph e Soils (Canada) Gustafsson and Tin(1994) 15-45 Dudas(1984): Dudas et al. (1988) 126(2-8000 Boyle and Jonasson(1973) Contaminated surficial deposits Mining.contaminated lake sediment 342(80-1104) Azcue et al.(1994, 1995 ritish Colombia (continued on next page)Table 4 Typical As concentrations in rocks, sediments, soils and other surficial deposits Rock/sediment type As concentration average and/ or range (mg kg
1 ) No of analyses Reference Igneous rocks Ultrabasic rocks (peridotite, dunite, kimberlite etc) 1.5 (0.03–15.8) 40 Basic rocks (basalt) 2.3 (0.18–113) 78 Basic rocks (gabbro, dolerite) 1.5 (0.06–28) 112 Onishi and Sandell (1955); Intermediate (andesite, trachyte, latite) 2.7 (0.5–5.8) 30 Baur and Onishi (1969); Intermediate (diorite, granodiorite, syenite) 1.0 (0.09–13.4) 39 Boyle and Jonasson (1973); Acidic rocks (rhyolite) 4.3 (3.2–5.4) 2 Ure and Berrow (1982); Acidic rocks (granite, aplite) 1.3 (0.2–15) 116 Riedel and Eikmann (1986) Acidic rocks (pitchstone) 1.7 (0.5–3.3) Volcanic glasses 5.9 (2.2–12.2) 12 Metamorphic rocks Quartzite 5.5 (2.2–7.6) 4 Hornfels 5.5 (0.7–11) 2 Phyllite/slate 18 (0.5–143) 75 Boyle and Jonasson (1973) Schist/gneiss 1.1 (<0.1–18.5) 16 Amphibolite and greenstone 6.3 (0.4–45) 45 Sedimentary rocks Marine shale/mudstone 3–15 (up to 490) Shale (Mid-Atlantic Ridge) 174 (48–361) Non-marine shale/mudstone 3.0–12 Sandstone 4.1 (0.6–120) 15 Onishi and Sandell (1955); Limestone/dolomite 2.6 (0.1–20.1) 40 Baur and Onishi (1969); Phosphorite 21 (0.4–188) 205 Boyle and Jonasson (1973); Iron formations and Fe-rich sediment 1–2900 45 Cronan (1972); Riedel and Evaporites (gypsum/anhydrite) 3.5 (0.1–10) 5 Eikmann (1986); Welch et al. Coals 0.3–35,000 (1988); Belkin et al. (2000) Bituminous shale (Kupferschiefer, Germany) 100–900 Unconsolidated sediments Various 3 (0.6–50) Azcue and Nriagu (1995) Alluvial sand (Bangladesh) 2.9 (1.0–6.2) 13 BGS and DPHE (2001) Alluvial mud/clay (Bangladesh) 6.5 (2.7–14.7) 23 BGS and DPHE (2001) River bed sediments (Bangladesh) 1.2–5.9 Datta and Subramanian (1997) Lake sediments, Lake Superior 2.0 (0.5–8.0) Allan and Ball (1990) Lake sediments, British Colombia 5.5 (0.9–44) 119 Cook et al. (1995) Glacial till, British Colombia 9.2 (1.9–170) Cook et al. (1995) World average river sediments 5 Martin and Whitfield (1983) Stream and lake silt (Canada) 6 (<1–72) 310 Boyle and Jonasson (1973) Loess silts, Argentina 5.4–18 Arribe´re et al. (1997); Smedley et al. (2002) Continental margin sediments (argillaceous, some anoxic) 2.3–8.2 Legeleux et al. (1994) Soils Various 7.2 (0.1–55) 327 Boyle and Jonasson (1973) Peaty and bog soils 13 (2–36) 14 Ure and Berrow (1982) Acid sulphate soils (Vietnam) 6–4125 Gustafsson and Tin (1994) Acid sulphate soils (Canada) 1.5–45 18 Dudas (1984); Dudas et al. (1988) Soils near sulphide deposits 126 (2–8000) 193 Boyle and Jonasson (1973) Contaminated surficial deposits Mining-contaminated lake sediment, British Colombia 342 (80–1104) Azcue et al. (1994, 1995) (continued on next page) P.L. Smedley, D.G. Kinniburgh / Applied Geochemistry 17 (2002) 517–568 531