Module 3 Flashcards

1
Q

refers to the overall shape or growth pattern of the mineral. It can
be described as equant, elongate and platy.

A

Crystal Habit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

three dimensions of the mineral have about the same length, like that of
a cube or sphere.

A

Equant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

forms prismatic or prism-like crystals that are thicker than the needle
as in a pencil.

A

Elongate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

– looks like a flattened and thin crystal (like plate). (ei. Wulfenite)

A

Platy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

describes the appearance of a mineral when light is reflected from its
surface. It can be described as opaque, transparent, dull, or shiny.

A

Luster

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

is opaque and very reflective like gold and silver.

A

Metallic luster

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

refers to the tendency of minerals to break
along very smooth, flat and shiny surfaces. It can be described as one, two, three,
four or all direction.

A

– Cleavage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

may break along random, irregular
surfaces. It can be classified as conchoidal, uneven, hackly, splintery, and earthy.

A

mineral fracture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

is a measure of the mineral’s resistance to scratching.

A

Hardness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

in 1812 ranked minerals
according to hardness

A

Friedrich Mohs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

_________ minerals will scratch ________ minerals.

A

harder, softer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

He selected ten minerals of distinctly
different hardness that ranged from a very soft mineral (_______) to a very hard
mineral (____________).

A

talc, diamond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

is one of the most obvious properties of a mineral but not reliable alone.

A

Color

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

refers to the color of the mineral in its powdered form, which may or may
not be the same color as the mineral.

A

Streak

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q
  • Some minerals are attracted to a hand magnet.
A

Magnetism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

____ is the only common mineral that is always strongly magnetic.

17
Q

-presence of very thin, parallel grooves. The grooves are present in only
one of the two sets of cleavages and are best seen with a hand lens. They may not
be visible on all parts of a cleavage surface.

A

Striations

18
Q

is the weight of that mineral divided by the weight of an
equal volume of water.

A

Specific Gravity

19
Q

Some minerals have distinctive __________ (halite is salt, and
tastes like it). Some give off a distinctive ________(the powder of some sulfide minerals,
such as sphalerite, a zinc sulfide, smells like rotten eggs), and some have a distinctive
_________ (talc feels slippery).

A

Taste, Odor, Feel

20
Q

show the presence and arrangement of atoms
in minerals.

A

Chemical properties of minerals

21
Q

Some minerals, especially carbonate minerals, react
visibly with acid. When a drop of
____________________________ is placed on calcite, it readily bubbles or effervesces,
releasing carbon dioxide.

A

dilute hydrochloric acid [HCl]

22
Q

____________________ minerals form into sulfuric acid when exposed to air and
water.

A

Metallic sulfide

23
Q

Cuarto (2016) classified minerals according to their chemical
composition using ______________ which divides minerals into eight basic classes. The classes are native elements, silicates, oxides, sulfides, sulfates, halides, carbonates, phosphates, and mineraloids.

A

Dana System

24
Q

These minerals are
naturally occurring in
nature in an uncombined
form with a distinct
mineral structure. It can
be classified as metal,
semimetals and non-
metals.

A

Native Elements

25
This is the largest group of minerals. It contains silicon and oxygen, with some aluminum, magnesium, iron and calcium.
Silicates
26
It is formed from the combination of a metal with oxygen. This group ranges from dull ores like bauxite to gems like rubies and sapphires.
Oxides
27
These are made of compounds of sulfur usually with a metal. They tend to be heavy and brittle.
Sulfides
28
These are made of compounds of sulfur combined with metals and oxygen. It is a large group of minerals that tend to be soft, and translucent.
Sulfates
29
They form from halogen elements like chlorine, bromine, fluorine, and iodine combined with metallic elements. They are very soft and easily dissolved in water.
Halides
30
These are group of minerals made of carbon, oxygen, and a metallic element.
Carbonates
31
They are often formed when other minerals are broken down by weathering. They are often brightly colored.
Phosphates
32
It is the term used for those substances that do not fit neatly into one of the eight classes.
Mineraloid