Calculate the density of a rock composed of the four


Calculate the density of a rock composed of the four minerals listed below together with their abundances and densities.

Mineral

Abundance by volume, %

Density g/cm3

Olivine

15

3.30

Augite

50

3.20

Plagioclase

25

2.68

Magnetite

10

5.18

Hint: The total mass of the rock is the sum of the masses of its minerals

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Physics: Calculate the density of a rock composed of the four
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