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EOSC 220: Rocks 2 know > DIAGNOSTIC PROPERTIES > Flashcards

DIAGNOSTIC PROPERTIES Flashcards

1
Q

Fluorite main identifier

A

purple fluorese

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2
Q

fluorites streak

A

white

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3
Q

fluorites hardness

A

4

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4
Q

bornites nickname

A

“peacock ore”

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5
Q

bornites streak

A

grey - black

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6
Q

Halite taste

A

salt

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7
Q

Halite hardness

A

2.5

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8
Q

Sylvite taste

A

bitter

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9
Q

Sylvite hardness

A

1.5 - 2

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10
Q

scheelite fracture

A

conchoidal to uneven?

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11
Q

scheelite streak

A

white to light yellow

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12
Q

scheelite colour

A

bright orang,e yellow, brown, tan. (ocassionaly others) therefore not diagnostic

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13
Q

apatite streak

A

white

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14
Q

apatite colour

A

it is transparent with vibrant colour

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15
Q

apatites lustre

A

vitreous to subresenous

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16
Q

copper colour

A

copper with greenish blue tarnish

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17
Q

copper lustre

A

metallic

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18
Q

copper specific gravity

A

8.9

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19
Q

sulfur streak

A

yellow

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20
Q

sulfur colour

A

yellow (brownish to greenish yellow range)

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21
Q

Sulfur hardness

A

1.5 - 2.5

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22
Q

Sulfur specific gravity

A

2.0 ish

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23
Q

sulfur scent

A

bad

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24
Q

graphite cleavage

A

1 perfect cleavage plane

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25
Q

graphite lustre

A

metallic sometimes submetallic / earthy

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26
Q

graphite hardness

A

1 - 2

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27
Q

gold colour

A

golden yellow

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28
Q

gold hardness

A

2.5 to 3

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29
Q

gold specific gravity

A

19.3 when pure

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30
Q

galena cleavage

A

perfect at 3 right angles

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31
Q

galena colour

A

bright silver with metallic lustre

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32
Q

galena specific gravity

A

7.4 to 7.6

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33
Q

sphalerite main identifier

A

fire rock through hand lens due to 6 perfect cleavage planes

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34
Q

sphalerite lustre

A

nonmetallic, submetallic, resinous

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35
Q

sphalerite streak

A

white to yellowish brown

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36
Q

cinnabar colour

A

bright red to brownish red

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37
Q

cinnabar specific gravity

A

8 to 8.2

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38
Q

cinnabar main identifier

A

in a bag

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39
Q

molybdenite colour

A

bluish grey to silbver

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40
Q

molybdenite lustre

A

metallic

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41
Q

molybdenite hardness

A

1 - 2

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42
Q

cracked jolly rancher

A

apatite

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43
Q

minecraft salt

A

halite

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44
Q

minecraft himilayan salt

A

sylvite

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45
Q

flakey metallic fish scale

A

molybdenite

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46
Q

covellite hardness

A

1.5 to 2

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47
Q

covellite colour

A

indigo blue, ble, blue, black

48
Q

covellite lustre

A

metallic

49
Q

chalcopyrite streak

A

greenish

50
Q

chalcopyrite bitter ?

A

yes

51
Q

chalcopyrite main description

A

cheap gold spraypaint

52
Q

is chalcopyrite brittle

A

yes

53
Q

is pyrite softer than chalcopyrite

A

no

54
Q

is chalcopyrite softer than pyrite

A

yes

55
Q

pyrrotite colour

A

bronze

56
Q

pyrrhotite magnetism

A

yes

57
Q

pyrrhotite fracture

A

subconchoidal

58
Q

pyrite colour

A

brass yellow (fools gold lol)

59
Q

pyrite hardness

A

6-6.5

60
Q

pyrite specfic gravity

A

4.9-5.2

61
Q

pyrite streak

A

greenish black

62
Q

marcasite form

A

tabular / platey

63
Q

marcasite fracture

A

fibrous

64
Q

arsenopyrite specific gravity

A

high at 5.9 to 6.2 ish

65
Q

aresenopyrite important

A

silvery in colour on freshly broken surfaces

66
Q

chalcocite streak

A

greenish

67
Q

chalcocite tarnish colour

A

might have purple tarnish on a black with green rock

68
Q

is chalcopyrite brittle

A

not that i know of

69
Q

is chalcoite brittle

A

yes maam

70
Q

hematite streak

A

red

71
Q

hematite specific gravity

A

5 to 5.3

72
Q

hematite color

A

black, silver, red, reddish brown, black

73
Q

corundum hardness

A

9

74
Q

corundum shape and system

A

trigonal, takes shape with 6 sides

75
Q

bauxite hardness

A

1 to 3

76
Q

bauxite specific gravity

A

2 to 2.5

77
Q

ilmenite streak

A

verryyyyyyyy black

78
Q

ilmenite magnestism

A

lightly skips when magnet dragged across

79
Q

magnetite magnetism

A

yes

80
Q

magnetite streak

A

black

81
Q

magnetite colour

A

black to silvery grey

82
Q

rutile lustre

A

adamentine to submetallic

83
Q

rutile colour

A

red to reddish brown, black, yellow to gold

84
Q

chromite lustre

A

metallic to submetallic

85
Q

chromite streak

A

dark brown

86
Q

goethite description colour

A

orange rust on black (bright)

87
Q

goethite streak

A

Bright orange

88
Q

goethite look description

A

needle like

89
Q

is pentlandite brittle

A

yes

90
Q

is pentlandite magnetic

A

no

91
Q

my look description of pentlandite

A

fish scaley

92
Q

pentlandite streak

A

light bronze to brown

93
Q

pentlandite colour

A

yellowish bronze

94
Q

gypsum specific gravity

A

2.3

95
Q

gypsum streak

A

white

96
Q

gypsum lustre

A

sugary -> vitreous

97
Q

barite cleavage

A

3 planes at right angles

98
Q

barite lustre

A

vitreous to pearly

99
Q

barite specific gravity

A

4.5 (heavy ish)

100
Q

calcite twinning

A

twinning is frequent

101
Q

calcite streak

A

whitec

102
Q

calcite lustre

A

vitreous

103
Q

rhodochrosite colour

A

pink

104
Q

rhodochrosite hardness

A

3.5 - 4

105
Q

magnesite look

A

marbly look, if not looks like a “rough rock from mideval times”

106
Q

magnesite harness

A

3.5 - 5

107
Q

magnesite streak

A

white

108
Q

dolomite hardness

A

3.5 - 4

109
Q

dolomite streak

A

white

110
Q

dolomite lustre

A

vitreous, pearly

111
Q

malachite colour

A

green

112
Q

malachite hardness

A

3.5 to 4

113
Q

malachite streak

A

green

114
Q

azurite streak

A

light blue

115
Q

azurite lustre

A

vitreous and earthy

116
Q
A

EOSC 220: Rocks 2 know (7 decks)

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