Minerals

Question 1

Which two minerals are a silicon tetrahedra?

Answer 1

Olivine

Garnet

Question 2

Which mineral has silicon chains?

Answer 2

Pyroxene

Question 3

Which two minerals have silicon sheets?

Answer 3

Mica

Clay

Question 4

Which two minerals have silica frameworks?

Answer 4

Quartz

Feldspar

Question 5

What is a mineral?

Answer 5

A naturally occurring chemical substance having a definite chemical composition and crystalline structure

Question 6

What is the angle between faces in quartz?

Answer 6

60º

Question 7

What is a grain boundary?

Answer 7

The line of contact between mineral crystals in a rock

Question 8

What lustre does galena have?

Answer 8

Metallic

Question 9

What are the eight diagnostic features of minerals?

Answer 9

Colour

Streak

Lustre

Shape

Cleavage and fracture

Hardness

Density

Reaction with acid

Question 10

What is the shape of quartz?

Answer 10

Irregular

Question 11

What is the colour of quartz?

Answer 11

White/grey

Question 12

What is the hardness of quartz?

Answer 12

7

Question 13

What is the cleavage/fracture of quartz?

Answer 13

None/irregular

Question 14

What is the lustre of quartz?

Answer 14

Vitreous/shiny

Question 15

What is the streak of quartz?

Answer 15

None

Question 16

What is the shape of feldspar?

Answer 16

Rectangular

Question 17

What is the shape of mica?

Answer 17

Sheets/flakes

Question 18

What is the shape of augite (pyroxene)?

Answer 18

Square

or eight sided in cross section

Question 19

What is the shape of hornblende?

Answer 19

Diamond shape in cross section

Question 20

What is the shape of olivine?

Answer 20

Round

Question 21

What is the shape of calcite?

Answer 21

Irregular/rhombic

Question 22

What is the shape of garnet?

Answer 22

Rounded

or six sided in cross section

Question 23

What is the shape of kyanite?

Answer 23

Flat/blades

Question 24

What is the colour of augite?

Answer 24

Dark green to black

Question 25

What colour is hornblende?

Answer 25

Green to black

Question 26

What colour is olivine?

Answer 26

Yellow green

Question 27

What colour is calcite?

Answer 27

White Grey Transparent

Question 28

What colour is garnet?

Answer 28

Deep red to brown

Question 29

What colour is kyanite?

Answer 29

Blue White Grey

Question 30

What is the cleavage of feldspar?

Answer 30

Two directions

Question 31

What is the cleavage of mica?

Answer 31

Good in one direction

Question 32

What is the cleavage of augite?

Answer 32

Two at almost 90º

Question 33

What is the cleavage of hornblende?

Answer 33

Two directions at about 60º

Question 34

What is the cleavage of olivine?

Answer 34

Poor

Question 35

What is the cleavage of calcite?

Answer 35

Three directions

Question 36

What is the cleavage of garnet?

Answer 36

None

Question 37

What is the cleavage of kyanite?

Answer 37

Two directions

Question 38

What lustre do all of the minerals have?

Answer 38

Vitreous

Question 39

What streak do all of the minerals excluding quartz have?

Answer 39

White