Presentation is loading. Please wait.

Presentation is loading. Please wait.

Mineral Identification

Similar presentations


Presentation on theme: "Mineral Identification"— Presentation transcript:

1 Mineral Identification

2 What is a Mineral? A naturally occurring, inorganic solid with a definite chemical composition and an orderly arrangement

3 Crystalline Forms The internal arrangement of atoms or ions determines the shape of the crystal

4 How do minerals form? Crystallization – when particles dissolve in a liquid or melt softly and reform in the shape of crystals

5 Rock Forming Minerals Silicate- a member of this group contains silicon and oxygen in their crystal formation Examples: Quartz, Feldspar, Olivine, Mica Nonsilicate – a member of this group does not contain silicon Examples: Calcite, Halite

6 Color

7 The way a mineral reflects or absorbs light at its surface
Luster The way a mineral reflects or absorbs light at its surface Metallic – the shiniest luster Waxy, Silky, Pearly, Vitreous (glassy) Earthy, Dull

8 Streak – the color that it leaves behind

9 Hardness How strong a mineral is compared to other known materials

10 Cleavage Cleavage – breaks with smooth flat surfaces

11 Fracture Fracture - breaks in uneven surfaces

12 Density Mass divided by volume- how tightly the molecules are packed together

13 Other test? Smell – rotten eggs - Sulfur Taste – only if safe - Halite
Chemically Reactive – bubbles in HCl acid - Calcite


Download ppt "Mineral Identification"

Similar presentations


Ads by Google