Question

Match the mineral deposit types in Group I with the water types in Group II considered dominantly responsible for their origin.

Group I		Group II
P	Porphyry copper deposits	1	Meteoric water
Q	Mississippi Valley Type deposits	2	Groundwater
R	Roll-front uranium deposits	3	Magmatic water
S	Epithermal gold deposits	4	Connate water

• A. P4, Q-3, R-2, S-1
• B. P-3, Q-4, R-1, S-2
• C. P-3, Q-4, R-2, S-1
• D. P-4, Q-1, R-2,S-3

Answer 1

The Correct Option is C

Let's match the mineral deposit types from Group I with the water types from Group II considered dominantly responsible for their origin:

1. Porphyry Copper Deposits: These are typically associated with magmatic water. During the formation of porphyry copper deposits, hydrothermal fluids rich in metals originate from magmatic sources. Hence, Porphyry Copper Deposits should be matched with Magmatic Water (3).
2. Mississippi Valley Type (MVT) Deposits: These are sediment-hosted, lead-zinc deposits typically formed from basinal brines, which are often considered to be connate waters. Connate water is the water trapped in the pore spaces of sedimentary rocks during their formation. Therefore, MVT Deposits align with Connate Water (4).
3. Roll-front Uranium Deposits: These are formed by the movement of uranium-bearing groundwater. Groundwater plays a key role in leaching uranium from host rocks and depositing it in a new location. So, Roll-front Uranium Deposits are associated with Groundwater (2).
4. Epithermal Gold Deposits: These deposits are typically formed from near-surface hydrothermal fluids, largely originating from meteoric water, which is water derived from precipitation (rain, snow, etc.). Hence, Epithermal Gold Deposits are matched with Meteoric Water (1).

Based on the above explanations, the correct matching sequence is: P-3, Q-4, R-2, S-1.

Thus, the correct answer is:

P-3, Q-4, R-2, S-1