Which of the following is a fluorite deposit?
Show Hint
- Sonapahar, Meghalaya
- Mangampeta, Andhra Pradesh
- Belka Pahar, Rajasthan
- Dongargaon, Maharashtra
The Correct Option is D
Solution and Explanation
Fluorite, also known as calcium fluoride, is a mineral found in many parts of the world. It is commonly used in the production of aluminum and other chemical processes.
Step 2: Identify the Correct Location.
- Dongargaon, located in Maharashtra, is a known fluorite deposit. - Other locations like Sonapahar, Mangampeta, and Belka Pahar are not specifically known for fluorite deposits.
Thus, the correct answer is Dongargaon, Maharashtra. Final Answer: \[ \boxed{\text{Dongargaon, Maharashtra}} \]
Top Questions on Mineralogy
- For a \(2/m\) pyroxene, the extinction angle between the vibration direction and crystallographic axis, X ⊥ c, is 36°. Then the angle Y ⊥ b in degrees will be ............. (In integer)
- IIT JAM GG - 2025
- Geology
- Mineralogy
- A metapelite is composed of muscovite + quartz + K-feldspar + kyanite mineral assemblage. If the muscovite and K-feldspar show solid solution between 'Na' and 'K' end-members, the minimum number of components that defines this metapelitic assemblage is ............. (In integer)
- IIT JAM GG - 2025
- Geology
- Mineralogy
- A mineral displays magenta interference colour (retardation, \( \Delta m = 550 \, \text{nm} \)) under crossed polarized light. If an accessory plate adds retardation of 100 nm, the interference colour observed is:
- IIT JAM GG - 2025
- Geology
- Mineralogy
- Which one of the following minerals has a characteristic pale yellow streak?
- IIT JAM GG - 2025
- Geology
- Mineralogy
- Which one of the following does NOT have a polymorph?
- IIT JAM GG - 2025
- Geology
- Mineralogy
Questions Asked in IIT JAM GG exam
Two boreholes A and B, both inclined towards 270°, penetrate a dipping coal bed at the same point and pass through it entirely in the sub-surface as shown in the figure below. The bed dips towards 270°. The thickness of the coal bed, measured along the borehole A is 10 m and along borehole B is 8 m. The angle between the two boreholes is 20°. The orthogonal thickness \( x \) of the coal bed is ........ m. (Round off to one decimal place)
- IIT JAM GG - 2025
- Applied Geology
A well-developed succession of laminated shale is bound by two volcanic ash beds that were precisely dated as shown in the schematic diagram given below. Assuming a constant sedimentation rate, the age of the fossiliferous limestone bed 65 m above the basal volcanic ash bed is ............ Ma. (Round off to nearest integer)
- IIT JAM GG - 2025
- Stratigraphy
The data tabulated below are for flooding events in the last 400 years.
The probability of a large flood accompanied by a glacial lake outburst flood (GLOF) in 2025 is ........... \(\times 10^{-3}\). (Round off to one decimal place)
Year Flood Size Magnitude rank 1625 Large 2 1658 Large + GLOF 1 1692 Small 4 1704 Large 2 1767 Large 2 1806 Small 4 1872 Large + GLOF 1 1909 Large 2 1932 Large 2 1966 Medium 3 2023 Large + GLOF 1 - IIT JAM GG - 2025
- Applied Geology
A satellite launching vehicle is carrying a lander for Moon mapping.
As shown in the figure below, P is the position where the gravitational forces exerted by Earth and Moon on the vehicle balance out.
The distance \( P \) from the center of the Earth is ........... \(\times 10^5\) km. (Round off to two decimal places)
- IIT JAM GG - 2025
- Applied Geology
The isobaric temperature-composition (T–X) phase diagram given below shows the phase relation between components M and N. The equilibrium melting undergone by the rock R to generate the liquid of composition L is .............. % (In integer )
- IIT JAM GG - 2025
- Applied Geology