Diagnostic Properties Of Minerals

Question 1

All 9 minerals have a __ lustre

Answer 1

Vitreous

Question 2

All 9 minerals except ____ have a ____ streak

Answer 2

Quartz, white

Question 3

Quartz streak

Answer 3

None

Question 4

Quartz lustre

Answer 4

Shiny

Question 5

Feldspar lustre

Answer 5

Dull

Question 6

Hornblende lustre

Answer 6

Shiny

Question 7

List all of the minerals with a density less than 3

Answer 7

Quartz, feldspar, mica, calcite

Question 8

List all of the minerals with a density more than 3

Answer 8

Augite, hornblende, olivine, garnet, kyanite

Question 9

List all minerals with hardness less than 4

Answer 9

Mica, calcite,

Question 10

List all minerals with hardness more than 4

Answer 10

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

Question 11

Quartz shape

Answer 11

Irregular

Question 12

Quartz colour

Answer 12

White or grey

Question 13

Quartz cleavage/ fracture

Answer 13

None/irregular

Question 14

Feldspar shape

Answer 14

Approximately rectangular

Question 15

Orthoclase feldspar colour

Answer 15

Pink

Question 16

Plagioclase feldspar colour

Answer 16

White or grey

Question 17

Plagioclase cleavage/fracture

Answer 17

Two directions

Question 18

Mica shape

Answer 18

Sheets/ flakes

Question 19

Muscovite colour

Answer 19

White or grey

Question 20

Biotite colour

Answer 20

Black

Question 21

Mica cleavage/ fracture

Answer 21

Good in one direction

Question 22

Augite shape

Answer 22

Square or eight sided in cross section

Question 23

Augite colour

Answer 23

Dark green to black

Question 24

Augite cleavage/ fracture

Answer 24

Two directions almost at right angles (93 degrees)

Question 25

Hornblende shape

Answer 25

Diamond shaped in cross section

Question 26

Hornblende colour

Answer 26

Green to black

Question 27

Hornblende cleavage/fracture

Answer 27

Two directions about 60 degrees (56 degrees)

Question 28

Olivine shape

Answer 28

Rounded

Question 29

Olivine colour

Answer 29

Yellow green

Question 30

Olivine cleavage/ fracture

Answer 30

Poor/ conchoidal

Question 31

Calcite shape

Answer 31

Irregular/ rhombic

Question 32

Calcite colour

Answer 32

White, grey or transparent

Question 33

Calcite cleavage/fracture

Answer 33

Three directions rhombohedral

Question 34

Garnet shape

Answer 34

Rounded/ six sided in cross section

Question 35

Garnet colour

Answer 35

Deep red to brown

Question 36

Garnet cleavage/ fracture

Answer 36

None/ poor conchoidal

Question 37

Kyanite shape

Answer 37

Flat/blades

Question 38

Kyanite colour

Answer 38

Blue, white or grey

Question 39

Kyanite cleavage/ fracture

Answer 39

Two directions

Question 40

Calcite reacts with:

Answer 40

Dilute HCl to produce bubbles

Question 41

Magnetite is

Answer 41

Magnetic