Wood

0.21

0.1–0.35

0.15–1.3

—

Coal

0.29

0.1–1.5

0.15–5.4

—

Concrete

1.00

0.75–1.4

1.0–5.0

0.5–2.2

Fused silica

1.40

1.33–1.46

1.8–5.2

0.8–2.3

Clay

1.40

1.2–1.7

1.6–6.1

0.7–2.6

Silt

1.60

1.4–2.1

1.9–7.5

0.8–3.2

Basalt

1.95

1.4–5.4

1.9–19.0

0.8–7.6

Siltstone

2.04

0.6–4.0

0.8–14.0

0.4–5.7

Limestone

2.29

0.5–4.4

0.7–16.0

0.4–6.3

Syenite

2.31

1.3–5.3

1.7–19.0

0.8–7.5

Amphibolite

2.46

1.4–3.9

1.9–14.0

0.8–5.6

Claystone

2.46

1.6–3.4

2.1–12.0

0.5–9.3

Lava

2.47

0.2–4.5

0.3–16.0

0.2–6.4

Gabbro

2.50

1.6–4.1

2.1–15.0

0.9–5.9

Dolerite (Diabase)

2.64

1.6–4.4

2.1–16.0

0.5–6.3

Granodiorite

2.65

1.3–3.5

1.7–13.0

0.8–5.0

Quartz sand (wet)

2.70

2.4–3.1

3.2–11.0

1.3–4.5

Marble

2.80

2.1–3.5

1.8–13.0

1.2–5.0

Porphyrite

2.82

3.8–10.0

1.5–4.2

Boulder clay

2.90

2.5–3.3

3.4–12.0

1.4–4.8

Diorite

2.91

1.7–4.2

2.3–15.0

1.0–6.0

Slate (perpendicular)

2.91

1.5–3.9

2.0–14.0

0.9–5.6

Gneiss

2.95

1.2–4.7

1.6–17.0

0.7–6.7

Granite

3.05

1.2–4.5

1.6–16.0

0.7–6.4

Eclogite

3.10

2.4–3.4

3.2–12.0

1.3–4.9

Andesite

3.20

1.6–4.7

2.1–17.0

1.0–6.7

Dolomite

3.62

1.6–6.6

2.1–20.0

1.0–9.3

Slate (parallel)

3.80

2.2–5.2

3.0–19.0

1.2–7.4

Peridotite

3.81

5.0–14.0

2.0–5.5

Anhydrite

4.05

1.0–6.0

1.3–20.0

0.6–8.5

Pyroxenite

4.27

3.2–5.1

4.3–18.0

1.7–7.2

Dunite

4.41

3.5–5.2

4.7–19.0

1.9–7.4

Quartzite

4.55

3.1–>8

4.2–20.0

1.7–11.0

Quartz

9.50

6.5–12.5

8.7–20.0

3.5–17.0