Chapter 2

Question 1

Minerals

Answer 1

Naturally occurring, inorganic, regular crystalline structures with narrowly defined chemical composition.

Question 2

Gemstones

Answer 2

Precious or semi-precious minerals or rocks used for decoration.

Question 3

Crystal Habit

Answer 3

Shape of minerals

Question 4

Lustre

Answer 4

Quality and intensity of light reflected from a mineral. Characterized as metallic and non-metallic.

Question 5

Cleavage and Fracture

Answer 5

Planes of breakage and and whether the surfaces are irregular.

Question 6

Types of Fracture

Answer 6

Irregular, splinter, conchoidal

Question 7

Bonding Forces

Answer 7

Covalent (strongest), Ionic, Metallic, Van der Waals (weakest)

Question 8

Rock Forming Minerals

Answer 8

Crystallize and grow as magma cools, most are silicates.