List of top Geology Questions on Minerals and Rocks

Which of the following minerals is/are formed by the process of residual concentration?
A. Iron,
B. Nickel,
C. Copper,
D. Aluminium. Choose the correct answer from the options given below:
Arrange the following oxides in the decreasing order of their relative abundance in the Earth's crust:
A. \(Al_2O_3\),
B. \(Fe_2O_3+FeO\),
C. \(CaO\),
D. \(SiO_2\). Choose the correct answer from the options given below:
The transformation of Limestone into Marble is an example of which type of metamorphism?
Which sedimentary structure is used to determine the paleo-current direction?
The famous "Gondwana Supergroup" in India is primarily known for its deposits of?
Match the microstructures in Group-I with their characteristics in Group-II. Group-I Group-II
Group-I  Group-II
PCore-mantle 1Radiating fibrous aggregate of K-feldspar with or without quartz
QDecussate2Large strained mineral grains surrounded by fine-grained, recrystallized grains
RSpherulite3Inclusion trails in a porphyroblast curves into the matrix foliation by developing concave outward pattern 
SMillipede 4Randomly oriented mineral grains dominated by crystal faces, such as in sheet silicates 
Which one among the following is the least abundant sedimentary rock in the stratigraphic record?
Which one of the following sequence of index mineral correctly represents the order of increasing metamorphic grade during regional metamorphism of siliceous dolomitic limestones ?
Which of the following rock structure is/are fold (S) ?
Match the minerals in Group-I with the corresponding cleavage types in Group-II.
 Group-I  Group-II
PDiopside1Cubic
QGalena2Octahedral
RCalcite3Prismatic
SFluorite4Rhombohedral
Which one or more of the following minerals shows O:Si ratio of 4:1 in its silicate structure?
Which one of the following is an ultramafic rock?