Jory is trying to identify a sample of an unknown mineral. His teacher tells him that it is one of the minerals listed in the table below.
Mineral Hardness
(Mohs scale) Shape Density
(g/cm3) Color Luster Streak Cleavage Fracture
Graphite 1 lamellar veins to earthy masses 2.09-2.23 steel gray metallic black Yes Yes-flaky
Talc 1 flattened or tabular 2.7-2.8 white to green non-metallic white Yes-basal Yes-uneven
Gypsum 2 tabular, bladed or blocky 2.3 white to colorless to gray non-metallic white Yes Yes-uneven
Hematite 6 tabular 5.3 steel gray metallic reddish-brown No Yes-uneven
Pyrite 6 cube, octahedron and pyritohedron 5.00-5.02 golden yellow metallic greenish black No Yes-conchoidal
Quartz 7 two rhombohedrons 2.6-2.65 colorless to several other shades non-metallic white Yes-weak rhombohedral Yes-conchoidal
He measures the mineral's hardness and finds that it is a 6 on the Mohs scale. What could he do next to determine which mineral it is?
A.
identify its luster
B.
measure its density
C.
test its cleavage
D.
measure its volume
Answers: 2
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Jory is trying to identify a sample of an unknown mineral. His teacher tells him that it is one of t...
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