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Geology REHAB > Mineralogy > Flashcards

Mineralogy Flashcards

1
Q

Hardness of diamond

a. 5
b. 10
c. 9
d. 8

A

b. 10

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2
Q

Hardness of corundum

a. 9
b. 4
c. 7
d. 6

A

a. 9

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3
Q

Hardness of talc

a. 4
b. 3
c. 1
d. 2

A

c. 1

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4
Q

Hardness of calcite

a. 5
b. 6
c. 4
d. 3

A

d. 3

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5
Q

Hardness of apatite

a. 6
b. 4
c. 7
d. 5

A

d. 5

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6
Q

Hardness of topaz

a. 8
b. 7
d. 9
c. 6

A

a. 8

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7
Q

Hardness of gypsum

a. 3
b. 2
c. 1
d. 4

A

b. 2

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8
Q

Hardness of quartz

a. 5
b. 7
c. 9
d. 8

A

b. 7

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9
Q

Hardness of orthoclase

a. 9
b. 7
c. 6
d. 8

A

c. 6

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10
Q

Hardness of fluorite

a. 5
b. 3
c. 6
d. 4

A

d. 4

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11
Q

The hardness of masonry drill bit

a. 9.5
b. 9
c. 8.5
d. 8

A

c. 8.5

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12
Q

Hardness of a finger nail

a. 3.5
b. 5.5
c. 2.5
d. 4.5

A

c. 2.5

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13
Q

Hardness of steel nail

a. 7.5
b. 5.5
c. 6.5
d. 8.5

A

c. 6.5

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14
Q

Hardness of a knife/ glass plate

a. 9.5
b. 7.5
c. 4.5
d. 5.5

A

d. 5.5

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15
Q

The hardness of copper penny

a. 3.5
b. 4.5
c. 7.5
c. 6

A

a. 3.5

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16
Q

a homogenous solid possessing long- range, three dimensional, internal orders.

a. mineral
b. rocks
c. crystals

A

c. crystals

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17
Q

a naturally occurring homogenous solid, with definite chemical composition and an ordered atomic arrangement. It is usually formed by inorganic processes.

a. mineral
b. rocks
c. crystals

A

a. mineral

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18
Q

an aggregate of minerals. It can be composed of only one kind of mineral (monomineralic) or of different kinds of minerals

a. mineral
b. rocks
c. crystals

A

b. rocks

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19
Q

minerals which have ornamental value, and which possess the qualities of beauty, durability, rarity, fashionability and portability

a. ore minerals
b. gems
c. industrial minerals

A

b. gems

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20
Q

those minerals from which one or more metals may be extracted at a profit.

a. ore minerals
b. gems
c. industrial minerals

A

a. ore minerals

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21
Q

those minerals which are, themselves, used for one or more industrial purposes such as in the manufacture of electrical and thermal insulators.

a. ore minerals
b. gems
c. industrial minerals

A

c. industrial minerals

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22
Q

Four axes. Three of the axes fall in the same plane and intersect at the axial cross at 120˚ between the positive ends. These three axes, labeled a1, a2, and a3 are of the same length.

a. triclinic
b. monoclinic
c. hexagonal

A

c. hexagonal

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23
Q

The three axes are all equal in length and intersect at three different angles ( any angle but 90°)

a. triclinic
b. monoclinic
c. hexagonal

A

a. triclinic

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24
Q

Three axes, all unequal in length, two of which (a and c) intersect at an oblique angle (not 90°), the third axis (b) is perpendicular to the other two axes.

a. triclinic
b. monoclinic
c. hexagonal

A

b. monoclinic

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25
Q

Three axes, all at right angles, and all three of different lengths

a. isometric
b. tetragonal
c. orthorhombic

A

c. orthorhombic

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26
Q

the three crystallographic axes are all equal in length and intersect at right angles (90o) to each other

a. isometric
b. tetragonal
c. orthorhombic

A
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27
Q

the three crystallographic axes are all equal in length and intersect at right angles (90o) to each other

a. isometric
b. tetragonal
c. orthorhombic

A

a. isometric

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28
Q

Three axes, all at right angles, two of which are equal in length (a and b) and one (c) which is different in length

a. isometric
b. tetragonal
c. orthorhombic

A

b. tetragonal

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29
Q

the resistance that the smooth surface of a mineral offers to scratch

a. cleavage
b. parting
c. fracture
d. hardness

A

d. hardness

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30
Q

ability of a mineral to break along a definite plane surface

a. cleavage
b. parting
c. fracture
d. hardness

A

a. cleavage

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31
Q

the way a mineral breaks when it does not yield along cleavage or parting

a. cleavage
b. parting
c. fracture
d. hardness

A

c. fracture

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32
Q

ability of a mineral to break along planes of structural weakness

a. cleavage
b. parting
c. fracture
d. hardness

A

b. parting

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33
Q

jagged fractures with sharp edges

a. conchoidal
b. hackly
c. fibrous or splintery
d. uneven or irregular

A

b. hackly

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34
Q

smooth, curved fracture resembling the surface of a shell

a. conchoidal
b. hackly
c. fibrous or splintery
d. uneven or irregular

A

a. conchoidal

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35
Q

rough surface

a. conchoidal
b. hackly
c. fibrous or splintery
d. uneven or irregular

A

d. uneven or irregular

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36
Q

the resistance that a mineral offers to breaking, crushing, bending or tearing or its cohesiveness

a. sectile
b. brittle
c. tenacity

A

c. tenacity

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37
Q

can be cut into thin shavings with a knife

a. sectile
b. brittle
c. tenacity

A

a. sectile

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38
Q

breaks or powders easily

a. sectile
b. brittle
c. tenacity

A

b. brittle

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39
Q

can be drawn into wire

a. elastic
b. ductile
c. flexible
d. malleable

A

b. ductile

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40
Q

can be hammered onto thin sheets

a. elastic
b. ductile
c. flexible
d. malleable

A

d. malleable

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41
Q

bends but does not resume its original shape when pressure is applied

a. elastic
b. ductile
c. flexible
d. malleable

A

c. flexible

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42
Q

bends and resumes its original shape upon release of pressure

a. elastic
b. ductile
c. flexible
d. malleable

A

a. elastic

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43
Q

refers to the general appearance of a mineral surface in reflected light

a. luster and transparency
b. non-metallic
c. metallic
d. vitreous

A

a. luster and transparency

44
Q

like glass (e.g. Quartz

a. luster and transparency
b. non-metallic
c. metallic
d. vitreous

A

d. vitreous

45
Q

the brilliant appearance of a mineral like a metal; opaque to light

a. luster and transparency
b. non-metallic
c. metallic
d. vitreous

A

c. metallic

46
Q

light-colored and transmits light at least through thin edges

a. luster and transparency
b. non-metallic
c. metallic
d. vitreous

A

b. non-metallic

47
Q

silk-like (e.g. Serpentine

a. silky
b. resinous
c. pearly
d. greasy

A

a. silky

48
Q

appears as if covered with a thin layer of oil

a. silky
b. resinous
c. pearly
d. greasy

A

d. greasy

49
Q

he luster of a resin (e.g. Sphalerite)

a. silky
b. resinous
c. pearly
d. greasy

A

b. resinous

50
Q

an iridescent pearl-like luster (e.g. Talc)

a. silky
b. resinous
c. pearly
d. greasy

A

c. pearly

51
Q

results, when white light strikes the surface of a mineral, one part of it, is reflected and the other refracted

a. streak
b. color
c. adamantine
d. specific gravity

A

b. color

52
Q

the color of a finely powdered mineral; can be determined by rubbing the mineral on unglazed porcelain or a streak plate

a. streak
b. color
c. adamantine
d. specific gravity

A

a. streak

53
Q

a hard, brilliant luster like that of diamond (e.g. Pb-minerals like Cerussite)

a. streak
b. color
c. adamantine
d. specific gravity

A

c. adamantine

54
Q

the relative density (G) is a number that expresses the ratio between the weight of a substance and the weight of an equal volume of water at 4°C

a. streak
b. color
c. adamantine
d. specific gravity

A

d. specific gravity

55
Q

ability of a mineral to be attracted to hand magnet

a. diamagnetic
b. ferromagnetic
c. paramagnetic
d. magnetism

A

d. magnetism

56
Q

those that are repelled by a hand magnet

a. diamagnetic
b. ferromagnetic
c. paramagnetic
d. magnetism

A

a. diamagnetic

57
Q

those that are attracted to hand magnet

a. diamagnetic
b. ferromagnetic
c. paramagnetic
d. magnetism

A

b. ferromagnetic

58
Q

minerals that contain iron and ore attracted to hand magnet

a. diamagnetic
b. ferromagnetic
c. paramagnetic
d. magnetism

A

c. paramagnetic

59
Q

the variation in color of a mineral when rotated or tilted at different angles in height

a. iridescence
b. play of colors
c. opalescence
d. tarnish

A

b. play of colors

60
Q

includes labradorescence ; is usually due to the refraction and/or reflection of light rays along cleavage, fractures, twin planes, exsolution lamellae, etc. e.g. Labradorite

a. iridescence
b. play of colors
c. opalescence
d. tarnish

A

a. iridescence

61
Q

is the color of the thin surface of film of material which forms as a result of exposure to the atmosphere

a. iridescence
b. play of colors
c. opalescence
d. tarnish

A

d. tarnish

62
Q

results from the regular arrangement of inclusions in the mineral

a. iridescence
b. play of colors
c. opalescence
d. tarnish

A

c. opalescence

63
Q

results from fibers or inclusions arranged in cavities

a. diaphaneity
b. chatoyancy
c. phosphorescence
d. asterism
e. luminescence

A

b. chatoyancy

64
Q

type of fluorescence that persists even after the “energy” or radiation source is removed

a. diaphaneity
b. chatoyancy
c. phosphorescence
d. asterism
e. luminescence

A

c. phosphorescence

65
Q

diffraction of light from regularly arranged inclusions, usually in tetragonal crystals

a. diaphaneity
b. chatoyancy
c. phosphorescence
d. asterism
e. luminescence

A

d. asterism

66
Q

ambient emission of light by a mineral due to the prescence of activators (impurities)

a. diaphaneity
b. chatoyancy
c. phosphorescence
d. asterism
e. luminescence

A

e. luminescence

67
Q

the ability of a mineral to pass light through it

a. diaphaneity
b. chatoyancy
c. phosphorescence
d. asterism
e. luminescence

A

a. diaphaneity

68
Q

Elongated crystals flattened like a knife blade

a. bladed
b. acicular
c. capillary and filiform

A

a. bladed

69
Q

hair-like or threadlike crystals

a. bladed
b. acicular
c. capillary and filiform

A

c. capillary and filiform

70
Q

slender, needlelike crystals

a. bladed
b. acicular
c. capillary and filiform

A

b. acicular

71
Q

Lattice-like groups of slender crystals

a. divergent or radiated
b. dendritic
c. reticulated
d. drusy

A

c. reticulated

72
Q

Arborescent, in slender divergent branches, somewhat plant-like

a. divergent or radiated
b. dendritic
c. reticulated
d. drusy

A

b. dendritic

73
Q

surface covered with a layer of small crystals

a. divergent or radiated
b. dendritic
c. reticulated
d. drusy

A

d. drusy

74
Q

radiating crystal groups

a. divergent or radiated
b. dendritic
c. reticulated
d. drusy

A

a. divergent or radiated

75
Q

radiating individuals terminating in round kidney-shaped masses.

a. columnar
b. bladed
c. fibrous
d. stellated
e. reniform

A

e. reniform

76
Q

an aggregate of many flattened blades

a. columnar
b. bladed
c. fibrous
d. stellated
e. reniform

A

b. bladed

77
Q

Stout, column-like individuals

a. columnar
b. bladed
c. fibrous
d. stellated
e. reniform

A

a. columnar

78
Q

radiating individuals forming star-like or circular groups.

a. columnar
b. bladed
c. fibrous
d. stellated
e. reniform

A

d. stellated

79
Q

aggregate of slender fibers, parallel or radiating

a. columnar
b. bladed
c. fibrous
d. stellated
e. reniform

A

c. fibrous

80
Q

radiating individuals forming spherical or hemispherical groups.

a. colloform
b. mammilary
c. botroyoidal
d. globular

A

d. globular

81
Q

large, rounded masses resembling mammilae, formed by radiating individuals

a. colloform
b. mammilary
c. botroyoidal
d. globular

A

b. mammilary

82
Q

large, rounded masses resembling mammilae, formed by radiating individuals

a. colloform
b. mammilary
c. botroyoidal
d. globular

A

b. mammilary

83
Q

spherical forms composed of radiating individuals without regard to size

a. colloform
b. mammilary
c. botroyoidal
d. globular

A

a. colloform

84
Q

globular forms resembling, as the word derived from the Greek word implies “bunch of grapes”.

a. colloform
b. mammilary
c. botroyoidal
d. globular

A

c. botroyoidal

85
Q

flat, plate-like individuals superimposed upon and adhering to each other.

a. foliated
b. micaceous
c. lammelar or tabular
d. plumose

A

c. lammelar or tabular

86
Q

easily separable into plates or leaves

a. foliated
b. micaceous
c. lammelar or tabular
d. plumose

A

a. foliated

87
Q

fine scales with divergent or featherlike structure

a. foliated
b. micaceous
c. lammelar or tabular
d. plumose

A

d. plumose

88
Q

similar to foliated, but splits onto exceedingly thin sheets, as in micas.

a. foliated
b. micaceous
c. lammelar or tabular
d. plumose

A

b. micaceous

89
Q

pendant cylinders or cone

a. concentric
b. stalactitic
c. granular

A

b. stalactitic

90
Q

A mineral aggregated composed of grains is called _________.

a. concentric
b. stalactitic
c. granular

A

c. granular

91
Q

more or less spherical layers superimposed upon one another about a common center

a. concentric
b. stalactitic
c. granular

A

a. concentric

92
Q

rounded masses about size of peas.

a. pisolitic
b. oolitic
c. banded

A

a. pisolitic

93
Q

mineral in narrow bands of different color or texture

a. pisolitic
b. oolitic
c. banded

A

c. banded

94
Q

small spheres resembling fish roe

a. pisolitic
b. oolitic
c. banded

A

b. oolitic

95
Q

a term used to describe a vesicle in a volcanic rock that is filled with secondary minerals

a. concretions
b. geode
c. massive
d. amygdaloidal

A

d. amygdaloidal

96
Q

rock cavity lined by a mineral mater but not wholly filled.

a. concretions
b. geode
c. massive
d. amygdaloidal

A

b. geode

97
Q

compact material without form or distinguishing features.

a. concretions
b. geode
c. massive
d. amygdaloidal

A

c. massive

98
Q

masses formed by deposition of materials about a nucleus

a. concretions
b. geode
c. massive
d. amygdaloidal

A

a. concretions

99
Q
  • relatively hard, dense, and refractory
  • generally occur as accessory minerals in igneous and metamorphic rocks and as resistant detrital grains in sediments

a. native minerals
b. sulfides
c. oxides

A

c. oxides

100
Q

constitute 3 groups: gold, platinum, iron

a. native minerals
b. sulfides
c. oxides

A

a. native minerals

101
Q
  • Includes the majority of ore minerals
  • most are opaque with distinctive colors and characteristically colored streaks

a. native minerals
b. sulfides
c. oxides

A

b. sulfides

102
Q

the most common mineral group (~25% of known minerals and ~40% of the common ones)

a. carbonates
b. phosphates
c. sulfates
d. silicates

A

d. silicates

103
Q
  • composed of the carbonate ionCO22- and one or more kinds of positive ions

a. carbonates
b. phosphates
c. sulfates
d. silicates

A

a. carbonates

104
Q
  • characterized by PO43-
  • E.g. Apatite Ca5(PO4)3(F,Cl,OH)

a. carbonates
b. phosphates
c. sulfates
d. silicates

A

b. phosphates

105
Q

characterized by presence of SO4 (e.g. anhydrite CaSO4, barite BaSO4)

a. carbonates
b. phosphates
c. sulfates
d. silicates

A

c. sulfates

Geology REHAB (5 decks)

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