Minerals

Question 1

Streak

Answer 1

rubbing on unglazed porcelain observed by the color of its powder

Question 2

luster

Answer 2

how light reflects from surface terms used to describe are metallic, glassy, and dull

Question 3

Mohs Hardness Scale

Answer 3

the softest mineral is talc and the hardest mineral is diamond

Question 4

ability to break

Answer 4

splits easily-cleavage and irregular break- fracture

Question 5

Mohs hardness scale

Answer 5

the softest mineral is talc and the hardest mineral is diamond

Question 6

what is a mineral?

Answer 6

naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition

Question 7

what are the 5 characteristics of a mineral

Answer 7

naturally occurring, inorganic, solid, crystal structure, definite chemical composition

Question 8

list the properties used to identify minerals

Answer 8

streak, luster, crystal system, hardness, ability to break

Question 9

what is used to rank the hardness of minerals

Answer 9

Mohs hardness scale

Question 10

what is the hardness mineral on the scale

Answer 10

diamond

Question 11

what is the softest mineral on the scale

Answer 11

talc

Question 12

what does it mean that a mineral must be inorganic

Answer 12

not man made

Question 13

what is a crystal

Answer 13

any solid material in which the component atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry

Question 14

what is a fracture

Answer 14

when a mineral breaks apart in an irregular way

Question 15

what is cleavage

Answer 15

if a mineral breaks easily along flat surfaces

Question 16

what is the crystallization process

Answer 16

by which atoms are arranged to form a material with a crystal structure

Question 17

Identify two ways minerals can form

Answer 17

crystallization of magma and lava
crystallization of materials dissolved in water

Question 18

what is an ore

Answer 18

a rock that contains a metal or other useful mineral that can be mined and sold for a profit

Question 19

what is the process that takes the ore and makes the mineral useful

Answer 19

metals

Question 20

Gemstones:

Answer 20

hard, a colorful mineral that has a brilliant or glassy luster; once cut and polished, it is called a gem

Question 21

Gem:

Answer 21

a precious or semiprecious stone, especially when cut and polished or engraved