Mining Geology [IFS (Forest Services) Geology]: Questions 1 - 8 of 16

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Question 1

Appeared in Year: 2017

Describe in Detail Subjective▾

Describe the important aspects of geochemical prospecting (Paper-II)

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Explanation

Aspects of Geo-Chemical Prospecting

The geochemical prospecting is very effective in locating deposits of base metals like Cu, Pb, Zn and oil & gas.

Principles of Geo-Chemical Prospecting

  • The samples of surface soil or sediments are collected and the metal content of the samples are determined by geochemical analysis.
  • The distribution of metal content …

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Question 2

Appeared in Year: 2017

Describe in Detail Subjective▾

Describe the basis for open cost and underground mining. (Paper-II)

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Explanation

Mining

  • Mining is the extraction of valuable minerals or other geological materials from the earth.
  • Once the mineral deposit has been identified through exploration, the industry will make an investment in mine development before the production.
  • Mining techniques are divided into two types, surface mining and sub-surface mining. Surface mining is calle…

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Question 3

Appeared in Year: 2021

Describe in Detail Subjective▾

What is sampling? Describe briefly the techniques of sampling in mineral exploration. (Paper-2)

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Explanation

Sampling is the process of taking a small portion of an object such that consistency of the part shall represent the entire property or only an adjacent portion of the object under assessment.

The sampling objects in geological perspectives are granite hill, limestone deposit, alluvial soil, weathered profile, beach sand, polymetallic nodules, miner…

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Question 4

Appeared in Year: 2021

Describe in Detail Subjective▾

What is ore Beneficiation? Briefly explain floatation method of separation? (Paper-2)

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Explanation

In the ore geology, beneficiation is any process that improves the value of the ore by removing the gangue minerals, which results in a higher quality product. There are many different types of beneficiations, with each step furthering the concentration of the original ore.

Floatation method of separation

From beginning of the 20th century, the flota…

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Question 5

Appeared in Year: 2021

Describe in Detail Subjective▾

Describe the methods of ore reserve estimation. (Paper-2)

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Explanation

  • Mineral resources and ore reserves are characterized = by the quantity (tonnage) and quality (grade of elements) of concentrations of material in or on Earth՚s crust.
  • The mineral reserve is the explored and totally defined part of the deposit at a particular cut-off after completion of detailed exploration. The reserve is estimated with a high level…

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Question 6

Appeared in Year: 2021

Describe in Detail Subjective▾

What are Pathfinder elements? Give a detailed account of geobotanical prospecting. (Paper-2)

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Explanation

Pathfinder Elements

Pathfinder or indicator elements are characteristic parameters in geochemical prospecting. The elements are relatively mobile due to physicochemical conditions of the solutions in which they are found, or may be in a volatile state (gaseous) .

They occur invariably in close association with the primary minerals being sought. These…

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Question 7

Appeared in Year: 2020

Describe in Detail Subjective▾

Describe the following underground mining methods with suitable diagrams (Paper-2)

Room and pillar method

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Explanation

Room and Pillar Method

Pillar mining, or room and pillar or board and pillar mining, is the most accepted type in underground coal mining due to flexibility and low capital cost.

The method is appropriate for narrow (2 - 4 m thick) coal seams, free from stone bands, located at a moderate depth, and having strong supports for roof and floor, which can…

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Question 8

Appeared in Year: 2020

Describe in Detail Subjective▾

Describe the following underground mining methods with suitable diagrams (Paper-2)

Sub-level stopping

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Explanation

Sub-Level Stopping

  • It is a large-scale open stoping method, and referred to as long hole or blast hole stoping.
  • Earlier sublevel stopping is applicable for steeply dipping thick mineralized lenses with regular boundaries.
  • The sublevel stope is designed between two main mine levels at a vertical separation of about 70 m. The haulage drive is at 20 m fr…

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