You are given two minerals - goethite (FeO₂H) and orthoclase feldspar (KAISi30g).
Which one would you expect to have the higher density? Calculate their densities
and see if your hypothesis is correct.
Calculate the density of a sample of goethite that weighs 16.84 g with a volume of 4
cm³.
a) 2.81 g/cm³
Ob) 4.21 g/cm³
c) 67.36 g/cm3
d) 7.87 g/cm³