Q. Which of the following minerals can scratch Topaz?

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Q. Streak colour and colour of the mineral are always same.

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Q. Which of the following mineral shows phosphorescence?

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Q. Quartz shows which lustre?

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Q. Which among the following shows silky lustre?

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Q. Which mineral group is abundantly found in the earth’s crust?

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Q. Felspar is found abundantly or in majority in which kind of rock?

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Q. The chemical composition of the feldspar group is __________

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Q. In the atomic structure, each oxygen atom is shared by how many tetrahedra?

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Q. The crystallographic system shown by felspar group is __________

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Q. How many groups are the felspar minerals classified into, on the basis of chemical composition?

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Q. The felspar minerals are free from __________

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Q. What is the chemical composition of Orthoclase?

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Q. What is the distinguishing characteristic of microcline and orthoclase?

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Q. Which of the following is not true about plagioclase?

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Q. Microcline can be easily distinguished from orthoclase.

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Q. The mica group minerals show which structure in the microscopic level?

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Q. There is the presence of eminent cleavage in micas.

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Q. What percent of crust do the micas form approximately?

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Q. Which is the less important and more important and less important minerals crystallize respectively?

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