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Exploration Geophysics and Mineral Deposits

Description: This quiz covers the fundamental concepts of Exploration Geophysics and Mineral Deposits, including geophysical methods, mineral exploration techniques, and the geology of mineral deposits.
Number of Questions: 15
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Tags: exploration geophysics mineral deposits geology geophysics
Attempted 0/15 Correct 0 Score 0

Which geophysical method is commonly used to detect subsurface structures and anomalies associated with mineral deposits?

  1. Seismic Refraction

  2. Electrical Resistivity

  3. Magnetic Survey

  4. Ground Penetrating Radar


Correct Option: C
Explanation:

Magnetic surveys are widely employed in mineral exploration to identify magnetic anomalies caused by the presence of magnetic minerals, often associated with mineral deposits.

What is the primary objective of mineral exploration?

  1. Identifying potential areas for mining

  2. Assessing the economic viability of mineral deposits

  3. Determining the environmental impact of mining

  4. Developing mining plans and strategies


Correct Option: A
Explanation:

The primary goal of mineral exploration is to locate and identify areas with the potential for economically viable mineral deposits.

Which geological process is responsible for the formation of hydrothermal mineral deposits?

  1. Magmatism

  2. Metamorphism

  3. Hydrothermal Alteration

  4. Weathering


Correct Option: C
Explanation:

Hydrothermal mineral deposits are formed when hot, mineral-rich fluids circulate through rocks, causing chemical reactions that result in the precipitation of valuable minerals.

What is the term used to describe the process of extracting valuable minerals from ores?

  1. Mining

  2. Smelting

  3. Refining

  4. Beneficiation


Correct Option: A
Explanation:

Mining is the process of extracting valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit.

Which geophysical method is commonly used to map subsurface structures and identify potential mineralized zones?

  1. Gravity Survey

  2. Seismic Reflection

  3. Electrical Conductivity

  4. Electromagnetic Induction


Correct Option: A
Explanation:

Gravity surveys measure variations in the Earth's gravitational field, which can be used to infer the presence of subsurface structures and anomalies associated with mineral deposits.

What is the term used to describe the process of separating valuable minerals from waste rock?

  1. Beneficiation

  2. Smelting

  3. Refining

  4. Hydrometallurgy


Correct Option: A
Explanation:

Beneficiation is the process of separating valuable minerals from waste rock or gangue minerals, typically through physical or chemical methods.

Which type of mineral deposit is formed by the accumulation of heavy minerals in placer deposits?

  1. Hydrothermal Deposits

  2. Sedimentary Deposits

  3. Magmatic Deposits

  4. Metamorphic Deposits


Correct Option: B
Explanation:

Sedimentary mineral deposits are formed by the accumulation of heavy minerals, such as gold, platinum, and diamonds, in placer deposits through the processes of erosion, transportation, and deposition.

What is the term used to describe the process of extracting valuable metals from ores using high temperatures?

  1. Smelting

  2. Refining

  3. Hydrometallurgy

  4. Electrometallurgy


Correct Option: A
Explanation:

Smelting is a process of extracting valuable metals from ores by heating them to high temperatures in the presence of a reducing agent, typically coke or charcoal, to separate the metal from impurities.

Which geophysical method is commonly used to detect subsurface cavities, fractures, and voids?

  1. Seismic Refraction

  2. Ground Penetrating Radar

  3. Electrical Resistivity

  4. Magnetic Survey


Correct Option: B
Explanation:

Ground Penetrating Radar (GPR) is a geophysical method that uses high-frequency electromagnetic waves to image the subsurface, allowing for the detection of subsurface cavities, fractures, and voids.

What is the term used to describe the process of purifying metals by removing impurities?

  1. Smelting

  2. Refining

  3. Hydrometallurgy

  4. Electrometallurgy


Correct Option: B
Explanation:

Refining is the process of purifying metals by removing impurities, typically through a series of chemical and physical processes, to obtain a higher purity metal.

Which type of mineral deposit is formed by the replacement of pre-existing rocks by hydrothermal fluids?

  1. Hydrothermal Deposits

  2. Sedimentary Deposits

  3. Magmatic Deposits

  4. Metamorphic Deposits


Correct Option: A
Explanation:

Hydrothermal mineral deposits are formed when hot, mineral-rich fluids circulate through rocks, causing chemical reactions that result in the replacement of pre-existing rocks with valuable minerals.

What is the term used to describe the process of extracting valuable metals from ores using chemical methods?

  1. Smelting

  2. Refining

  3. Hydrometallurgy

  4. Electrometallurgy


Correct Option: C
Explanation:

Hydrometallurgy is a process of extracting valuable metals from ores using chemical methods, typically involving the dissolution of the metal in a solvent followed by precipitation or other chemical reactions to recover the metal.

Which geophysical method is commonly used to detect subsurface structures and anomalies associated with mineral deposits?

  1. Seismic Refraction

  2. Electrical Resistivity

  3. Magnetic Survey

  4. Ground Penetrating Radar


Correct Option: A
Explanation:

Seismic refraction is a geophysical method that uses seismic waves to determine the subsurface structure and identify potential mineralized zones.

What is the term used to describe the process of extracting valuable metals from ores using electrical energy?

  1. Smelting

  2. Refining

  3. Hydrometallurgy

  4. Electrometallurgy


Correct Option: D
Explanation:

Electrometallurgy is a process of extracting valuable metals from ores using electrical energy, typically through electrolysis or electrowinning.

Which type of mineral deposit is formed by the accumulation of organic matter in sedimentary rocks?

  1. Hydrothermal Deposits

  2. Sedimentary Deposits

  3. Magmatic Deposits

  4. Metamorphic Deposits


Correct Option: B
Explanation:

Sedimentary mineral deposits are formed by the accumulation of organic matter in sedimentary rocks, such as coal and oil, through geological processes over millions of years.

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