Which common rock forming minerals exhibit cleavage planes at nearly 60°/120°?
A) amphiboles like hornblende
B) feldspars like plagioclase and orthoclase
C) pyroxenes like augite
D) micas like muscovite and biotite
Correct Answer:
Verified
Q65: What is the name of dark-coloured mica?
A)calcite
B)biotite
C)quartz
D)olivine
Q66: Which of the following minerals are silicates?
A)hematite,
Q67: Hornblende and the other amphiboles have what
Q67: Hornblende and the other amphiboles have what
Q68: Which of the following is a single-chain,
Q69: All ferromagnesian minerals contain which two elements?
A)calcium,
Q72: Which of the following minerals is a
Q73: Which common rock forming minerals exhibit a
Q74: Which of the following best characterizes ferromagnesian
Q75: Which element forms the strongest bonds with
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