Minerals 💎

Question 1

What is a mineral?

Answer 1

Natural occurring, inorganic solid that has a crystalline structure and definite chemical composition…

Question 2

Five criteria’s to be a mineral

Answer 2

Solid
Natural
Inorganic
Fixed composition
Crystal structure

SNIFC

Question 3

Minerals are mostly…

Answer 3

Compounds but some are just elements.

Question 4

Compound example

Answer 4

Quartz

Question 5

Element example

Answer 5

Gold, Cobalt, SILVER IS MORE BEAUTIFUL THAN A CAT, copper, Arsenic, Bismuth.

Question 6

How do the minerals often look like when they are found?

Answer 6

Minerals are often dull looking and encased in rock when they are originally found.

Question 7

What can you get when you polish some minerals?

Answer 7

Gemstones

Question 8

How many shapes of mineral are there?

Answer 8

6

Question 9

Where are minerals found?

Answer 9

Minerals are usually found in ore.

Question 10

What is ore?

Answer 10

An ore is a type of rock that contains sufficient minerals and with important elemts like metals that can be economically extracted from the rock.

Question 11

How is the ore extracted?

Answer 11

By mining.

Question 12

How are the ores refined?

Answer 12

By smelting to extract the valuable elements.

Question 13

How are the minerals classified?

Answer 13

Based on their chemical composition, minerals are classified into 8 group.

Question 14

What are the 8 groups of minerals?

Answer 14

Silicates
Native elements
Carbonates
Halides
Oxides
Phosphates
Sulfates
Sulfides

Question 15

How are Minerals Identified?

Answer 15

On the basis of their chemical composition and crystalline structure.

Question 16

Does same mineral has the always same color?

Answer 16

No

Question 17

What is a streak?

Answer 17

A streak is the color of a mineral in powdered form

Question 18

How can you observe the streak of a mineral?

Answer 18

Rub the mineral against a piece of unglazed ceramic tile, this is called a streak plate.

Question 19

What is the streak of a metallic mineral?

Answer 19

A metallic mineral will have a dark streak.

Question 20

What is the streak of a non-metallic mineral?

Answer 20

A nonmetallic mineral will have a very light or no streak.

Question 21

What would cause a mineral to leave no streak?

Answer 21

Minerals that are harder than the streak plate are said to have “no streak” or a “colorless streak.”

Question 22

What is a luster?

Answer 22

Luster is the way a mineral reflects light.

Question 23

What is a metallic luster?

Answer 23

Metallic Luster reflects light like polished metal.

Question 24

What is a non-metallic luster?

Answer 24

Nonmetallic Luster - Does not reflect light like a metal.

Question 25

What are some examples of luster?

Answer 25

Metallic, non-metallic, glassy, waxy, pearly, dull or earthy

Question 26

What is hardness?

Answer 26

The ability of a mineral to resist scratching.

Question 27

What is the Mohs Hardness Scale?

Answer 27

The scale which the hardness of a minerals is rated.

Question 28

How do you test an unknown mineral’s hardness?

Answer 28

You must determine the hardest mineral on the scale that the unknown mineral can scratch.

Question 29

What does the density of a mineral depend on?

Answer 29

The kinds of atoms in the mineral How closely those atoms are packed

Question 30

What is a crystalline structure?

Answer 30

The pattern of atomic structure.

Question 31

How a mineral breaks?

Answer 31

Cleavage and fracture.

Question 32

What kind of break is a cleavage?

Answer 32

When a mineral splits evenly along a flat surface

Question 33

What kind of break is a fracture?

Answer 33

When a mineral breaks in an irregular way. (unevenly)

Question 34

What is a Double Refraction?

Answer 34

These minerals produce a double image of any object viewed through the mineral

Question 35

Why would a mineral be attracted to a magnet?

Answer 35

Contains iron.

Question 36

Wha tis a Fluorescence?

Answer 36

The ability to glow under UV light

Question 37

What is a Phosphorescence?

Answer 37

The mineral glows under UV light, when the light is turned off, the mineral continues to glow

Question 38

How do minerals form?

Answer 38

Formation from organic processes Crystallization from dissolved materials in water Crystallization of cooling magma or lava

Question 39

What is a Formation from organic processes ?

Answer 39

This means a living thing helped create it, but it is not from the living thing itself Examples: Coral and shells are made out of the mineral calcite.

Question 40

What is a Crystallization from dissolved materials in water?

Answer 40

When elements and compounds leave a dissolved solution, crystallization can occur. Evaporation Cooling hot water solutions Geodes

Question 41

What is a Crystallization of cooling magma or lava?

Answer 41

Cooling magma can create igneous rocks - these rocks contain crystalized minerals such as quartz, feldspar and biotite mica.

Question 42

What is a definite crystalline structure?

Answer 42

A crystal is a solid in which atoms or molecules are arranged in a definite pattern that is repeated over and over and over and over again.