GEOLOGY - CHAPTER2 (PPM)

Question 1

This are used by mineralogist in helping determine and identifying a specimen.

Answer 1

Physical Properties of minerals

Question 2

is done by checking for certain mineral properties or characteristics

Answer 2

Mineral Identification

Question 3

It is a property associated by the resistance of a mineral to scratching

Answer 3

HARDNESS

Question 4

A property of minerals
that describes a tendency to break
along smooth, flat planes.
It used to identify minerals based
on the number and angle of these
cleavage planes

Answer 4

CLEAVAGE

Question 5

This occurs when there is only one cleavage plane

Answer 5

Basal or Pinacoidal Cleavage

Question 6

Occurs when there are three cleavage planes intersecting in 90 degrees

Answer 6

Cubic Cleavage

Question 7

Occurs when there are four cleavage planes in a crystal

Answer 7

Octahedral Cleavage

Question 8

It occurs when there are three cleavage planes intersecting at angles that are not 90 degrees

Answer 8

Rhombohedral Cleavage

Question 9

This occurs when there are two cleavage planes in a crystal

Answer 9

Prismatic Cleavage

Question 10

It occurs when there are six cleavage planes in a crystal

Answer 10

Dodecahedral Cleavage

Question 11

A property of minerals that is sometimes purely diagnostic.

For some minerals it is not all diagnostic because some minerals are allochromatic.

Answer 11

color

Question 12

The color produced by a fine powder of the mineral when scratched on a streak plate

Answer 12

Streak

Question 13

It has the appearance of a polished metal

Answer 13

Metallic Luster

Question 14

The mineral is opaque, dull and dark colored

Answer 14

Submetallic Luster

Question 15

It has a glassy appearance

Answer 15

Vitreous

Question 16

It appears resinous

Answer 16

Resinous

Question 17

TYPES OF
NON-METALLIC LUSTER

Answer 17

Vitreous
Resinous
Pearly
Greasy
Silky
Adamantine

Question 18

It has an iridescent pearl-like

Answer 18

Pearly

Question 19

Appears to be covered with a thin layer of oil

Answer 19

Greasy

Question 20

It appears is fibrous.

Answer 20

Silky

Question 21

It has a brilliant luster

Answer 21

Adamantine

Question 22

It refers to the way the atoms that make up the mineral are arranged internally.

Answer 22

Crystalline Structure

Question 23

It refer to the way mineral breaks
The mineral may break into splinters, rough irregularly surfaced pieces as well as shell shaped forms knows as conchoidal fractures.

Answer 23

FRACTURE

Question 24

This refers to the ability of the mineral to hold together when crushed.

Answer 24

TENACITY

Question 25

DIFFERENT FORMS OF TENACITY

Answer 25

Brittle Ductile Flexible Elastic

Question 26

- The mineral is considered brittle when hammered and the result is powder or small crumbs

Answer 26

Brittle

Question 27

The mineral can be flattened by the pounding

Answer 27

Malleable

Question 28

The mineral can be stretched into a wired

Answer 28

Ductile

Question 29

It can be bent but remains in the position after it is bent

Answer 29

Flexible

Question 30

When bent, they spring back to their original position.

Answer 30

Elastic

Question 31

is the ratio of the weight of the mineral to the weight of an equal volume of Water

Answer 31

SPECIFIC GRAVITY-

Question 32

refers to the property of possessing a magnetic force field

Answer 32

MAGNETISM-

Question 33

It describes strong attraction to magnetic fields

Answer 33

FERROMAGNITISM

Question 34

is weak attraction to magnetic fields Most paramagnetic minerals become strongly magnetic when heated

Answer 34

PARAMAGNETISM

Question 35

is the repelling from the magnetic fields

Answer 35

DIAGMAGNETISM

Question 36

It generates magnetic field on its own

Answer 36

MAGNETISM

Question 37

refers to the emission of light (to which the eyes are sensitive) by a mineral that is being stimulated by the absorption of ultraviolet or X-ray radiation.

Answer 37

FLUORESCENCE

Question 38

refers to the emission of light by a mineral after the stimulating source (rays or ultraviolet radiation) has been removed

Answer 38

PHOSPHORESCENCE