Chapter 1.2- Properties Of Minerals

Question 1

Which of the following is not used as Primary Identifying properties of minerals?

A. Cleavage
B. Crystal Habit
C. Streak
D. Taste

Answer 1

D. Taste

Question 2

The _____ property that describes the shape of minerals.

Answer 2

Crystal Habit

Question 3

What is a mineral cleavage?

Answer 3

It describes how the mineral breaks under pressure.

Question 4

Most minerals have tendency to break in a preferred direction along smooth surface. Where the Atoms connect it forms a weak point. In example, _______ is a mineral that resistant to breaking but peels quite easily.

Answer 4

Mica

Question 5

True or False

All minerals have cleavage.

Answer 5

False

Not all minerals have cleavage instead,some have fracture

Example. The shatter like glass

Question 6

It is based upon the arrangement of Atoms within the crystalline structure.

Answer 6

Hardness

Question 7

It is a primary property that describes how hard the mineral is.

Answer 7

Hardness

Question 8

What is being used to grade the hardness of a minerals?

Answer 8

Mohs Scale of Hardness

Question 9

True or false

Hardness is graded from 1-20, using Mohs Scale of Hardness

Answer 9

False - Hardness of minerals is graded from 1-10

Question 10

Which of the following is the softest mineral?

A. Calcite
B. Gypsum
C. Talc
D. Fluorite

Answer 10

C. Talc - mohs scale =1

Gypsum =2
Calcite =3
Flourite = 4

Question 11

Which of the following is the hardest minerals?

A. Corundum
B. Topaz
C. Quarts
D. Diamond

Answer 11

D. Diamond= mohs scale is 10

Mohs scale
Quarts = 7
Topaz= 8
Corundum= 9

Question 12

True or false

General classification of hardness is acceptable based on scratch test.

Answer 12

True

Question 13

In scratch test you can consider the mineral as soft if ?

A. Able to scratched with a knife
B. Able to scratched with a fingernail
C. Able to scratch glass with the mineral

Answer 13

B. Able to scratched with fingernail.

Question 14

In Scratch test, a mineral is consider as hard if?

A. Able to scratch rocks with the mineral.
B. Able to scratch wood with the mineral.
C. Able to scratch glass with the mineral.

Answer 14

C. Able to scratch glass with mineral

Question 15

In Scratch test, a medium hardness of mineral is considered if?

Answer 15

Not able to scratched with fingernail, nor able to scratch glass with mineral.

Question 16

It is the property of Minerals that describes the ratio of mineral’s weight to water.

Answer 16

Specific Gravity.

Question 17

It describes the color of the mineral in solid form.

Answer 17

Color

Question 18

True or False

Identifying minerals using color as the sole basis for identification can easily lead to misindentification

Answer 18

True

Because some minerals such as sulfur are distinctly colored– always some shade of yellow–it’s relatively common to find color variation within a same minerals.

Question 19

It determines the color of the minerals in powdered form.

Answer 19

Steak

Question 20

It is a piece of unglazed porcelain that is used to determine the streak of a mineral.

Answer 20

Streak plate

Question 21

Which of the following is not a secondary identifying properties of mineral?

A. Magnetism
B. Specific gravity
C. Flouorescense
D. Taste
E. Reaction to acid
F. Striations
G. Luster

Answer 21

B. Specific gravity

• because it is a primary identifying property.

Question 22

It is being describe using these words

Pearly, waxy, shiny, dull, Earthy, Glassy.

Answer 22

Luster

Question 23

The _____ describes the surface appearance of the mineral.

Answer 23

Luster

Question 24

It describes the inherent magnetic qualities.

Example: magnetite= yes, Quartz = no.

Answer 24

Magnetism

Question 25

It is one of properties of Lapis Lazuli that have the characteristic to glow under a black light.

Answer 25

Fluorescense.

Question 26

Any mineral with calcium carbonate (CaCO³) will fizz when diluted hydrochloric acid (HCl) is dropped on it. What property is being show on the sentence above?

Answer 26

Reaction to Acid

Question 27

It describes the reaction of minerals when exposed to acid.

Answer 27

Reaction to acid

Question 28

It is the property that describes the distinctive marks on the surface of the minerals. These marks are usually parallel lines on the mineral surface. Example is the Field is often heavily striated.

Answer 28

Striations.

Question 29

Some minerals have distinctive taste. And this property is called?

Answer 29

Taste

Question 30

True or false Halite(NaCl) is an example of minerals with taste property.

Answer 30

True Because it is a salt.