Lecture 1

Question 1

______an applied science that combines the principles of ______ and _____ to the development of a defined mineral resource.

Answer 1

Mining geology, economic geology, mining engineering

Question 2

Mine geologist study the relationships between 1, 2, 3

Answer 2

geology, ore formation and locate new mineral resources

Question 3

responsibilities of a mine geologist

Answer 3

assessing and analyzing geological data in order to advise on short term and long term mine production plans

Question 4

it is defined as a rock that contains one or more elements or minerals, sufficiently above crustal abundance with potential economic value

Answer 4

mineral deposit, or ore deposit

Question 5

subeconomic materials in a mineral deposit materials that may be profitably mined in the future

Answer 5

mineral resource

Question 6

two broad classification of mineral deposits

Answer 6

metallic and non-metallic mineral deposits

Question 7

deposits of native elements or deposits of copper, zinc, lead , iron and gold which one or more metals can be extracted

Answer 7

metallic mineral deposits

Question 8

deposits of clay, mica, fluorite, asbestos, garnet, etc.), which contain minerals useful on account of their specific physical or chemical properties

Answer 8

nonmetallic (or industrial) mineral deposits

Question 9

minerals of economic interest in a deposit

Answer 9

ore minerals

Question 10

waste materials

Answer 10

gangue

Question 11

refers to a specific volume of material in a mineral deposit that can be mined and marketed at a reasonable profit under the prevailing conditions of the commodity prices, costs and technology

Answer 11

orebody

Question 12

the average concentration of a valuable substance in a mineral deposit

Answer 12

grade or tenor

Question 13

minimum concentration required to achieve the break even point for mine in terms of revenue and costs

Answer 13

cut-off grade

Question 14

a critical step in the evaluation of a mineral deposit because the size of the reserves increases progressively, often exponentially, with decreasing cut-off grade

Answer 14

determination of cut-off grade

Question 15

degree of geologic certainty of existence

Answer 15

measure, inferred, indicated

Question 16

mineral resources can be divide into two categories on the basis of economic feasibility

Answer 16

paramarginal and submarginal categories on the basis of economic feasibility

Question 17

mineral resources can be divide into two categories on the basis of economic feasibility

Answer 17

paramarginal and submarginal categories on the basis of economic feasibility

Question 18

material in the orebody that also used to denote ore-like material (in terms of mineral assemblage) that cannot be mined because of lower grade or other reasons

Answer 18

ore

Question 19

refers to the pattern of distribution of the minerals in a host rock, and it varies from being very subtle (even invisible to the naked eye as in some precious metal deposits) to quite pronounced (as in the case of massive sulfide deposits)

Answer 19

style of mineralization

Question 20

seven commonly used terms for style of mineralization and morphology of mineral deposits

Answer 20

disseminated, stockworks, massive, tabular, vein-type, stratiform, strata-bound

Question 21

seven commonly used terms for style of mineralization and morphology of mineral deposits

Answer 21

disseminated, stockworks, massive, tabular, vein-type, stratiform, strata-bound

Question 22

Mode of occurrence of DISSEMINATED mineralization style

Answer 22

ore minerals dispersed through the host rock

Question 23

Mode of occurrence of STOCKWORKS mineralization style

Answer 23

an interlacing network of small and narrow (cm), close-spaced ore-bearing veinlets traversing the host rock

Question 24

Mode of occurrence of MASSIVE mineralization style

Answer 24

mineralization comprised >50% of the host rock

Question 25

Mode of occurrence of TABULAR mineralization style

Answer 25

an ore zone that is extensive in two dimesions, but has a restricted development in the third dimesion

Question 26

Mode of occurrence of VEIN-TYPE mineralization style

Answer 26

mineralization in veins, commonly discordant to the host rock layering (depositional)

Question 27

Mode of occurrence of STRATIFORM mineralization style

Answer 27

Mineralization confined to a specific bed and, thus, broadly conformable to the host rock layering (depositional)

Question 28

Mode of occurrence of STRATA-BOUND mineralization style

Answer 28

Mineralization discordant to the host rock layering (depositional) but restricted to a particular stratigraphic interval

Question 29

Typical example of DISSEMINATED mineralization style

Answer 29

diamond in Kimberlite pipes

Question 30

Typical example of STOCKWORKS mineralization style

Answer 30

Footwall alteration zone of volcanic-hosted massive sulfide deposits

Question 31

Typical example of MASSIVE mineralization style

Answer 31

volcanic-hosted massive sulfide deposits

Question 32

Typical example of TABULAR mineralization style

Answer 32

sandstone-type uranium deposits

Question 33

Typical example of VEIN-TYPE mineralization style

Answer 33

Base-and precious metal veins

Question 34

Typical example of STRATIFORM mineralization style

Answer 34

Kupferschiefer-type stratiform copper deposits

Question 35

Typical example of STRATA-BOUND mineralization style

Answer 35

mineralized breccia bodies in Mississippi valley-type deposits

Question 36

Natural resources in the form of mineral deposits

Answer 36

Mineral resources

Question 37

Any volume of rock containing an enrichment of one or more minerals

Answer 37

Mineral deposits

Question 38

A natural material from which valuable or useful natural occurs at a sufficient concentration, relative to average rocks, to make it economically worth mining

Answer 38

Ore

Question 39

Ore mineralsusually occur with non-valuable minerals

Answer 39

Gangue