List of top Geology Questions on Crystallography asked in GATE GG

Which one of the following is NOT a diagnostic parameter in identifying a crystalline phase using powder X-ray diffraction data?
Which of the following statements related to crystal defects is/are CORRECT?
Match the mineral names in Group I with corresponding space groups in Group II.
Group-IGroup-II
P. Diamond1. P63/mmc
Q. Coesite2. R\(\bar{3}\)c
R. Graphite3. Fd\(\bar{3}\)m
S. Calcite4. C2/c
The symmetry elements of a point group are: 3 crystallographic axes of 2-fold symmetry and 3 mirror planes perpendicular to the crystallographic axes. The Hermann – Mauguin notation of the point group is: