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geology > Diagnostic Properties Of Minerals > Flashcards

Diagnostic Properties Of Minerals Flashcards

1
Q

All 9 minerals have a __ lustre

A

Vitreous

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2
Q

All 9 minerals except ____ have a ____ streak

A

Quartz, white

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3
Q

Quartz streak

A

None

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4
Q

Quartz lustre

A

Shiny

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5
Q

Feldspar lustre

A

Dull

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6
Q

Hornblende lustre

A

Shiny

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7
Q

List all of the minerals with a density less than 3

A

Quartz, feldspar, mica, calcite

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8
Q

List all of the minerals with a density more than 3

A

Augite, hornblende, olivine, garnet, kyanite

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9
Q

List all minerals with hardness less than 4

A

Mica, calcite,

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10
Q

List all minerals with hardness more than 4

A

Quartz, feldspar, augite, hornblende, olivine, garnet, kyanite

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11
Q

Quartz shape

A

Irregular

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12
Q

Quartz colour

A

White or grey

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13
Q

Quartz cleavage/ fracture

A

None/irregular

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14
Q

Feldspar shape

A

Approximately rectangular

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15
Q

Orthoclase feldspar colour

A

Pink

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16
Q

Plagioclase feldspar colour

A

White or grey

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17
Q

Plagioclase cleavage/fracture

A

Two directions

18
Q

Mica shape

A

Sheets/ flakes

19
Q

Muscovite colour

A

White or grey

20
Q

Biotite colour

A

Black

21
Q

Mica cleavage/ fracture

A

Good in one direction

22
Q

Augite shape

A

Square or eight sided in cross section

23
Q

Augite colour

A

Dark green to black

24
Q

Augite cleavage/ fracture

A

Two directions almost at right angles (93 degrees)

25
Q

Hornblende shape

A

Diamond shaped in cross section

26
Q

Hornblende colour

A

Green to black

27
Q

Hornblende cleavage/fracture

A

Two directions about 60 degrees (56 degrees)

28
Q

Olivine shape

A

Rounded

29
Q

Olivine colour

A

Yellow green

30
Q

Olivine cleavage/ fracture

A

Poor/ conchoidal

31
Q

Calcite shape

A

Irregular/ rhombic

32
Q

Calcite colour

A

White, grey or transparent

33
Q

Calcite cleavage/fracture

A

Three directions rhombohedral

34
Q

Garnet shape

A

Rounded/ six sided in cross section

35
Q

Garnet colour

A

Deep red to brown

36
Q

Garnet cleavage/ fracture

A

None/ poor conchoidal

37
Q

Kyanite shape

A

Flat/blades

38
Q

Kyanite colour

A

Blue, white or grey

39
Q

Kyanite cleavage/ fracture

A

Two directions

40
Q

Calcite reacts with:

A

Dilute HCl to produce bubbles

41
Q

Magnetite is

A

Magnetic

geology (15 decks)

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