Opening Look at the following pictures Decide if

  • Slides: 24
Download presentation

Opening: • Look at the following pictures. • Decide if each object is mineral

Opening: • Look at the following pictures. • Decide if each object is mineral or a rock. • Write your answers on the index card provided.

1. Mineral or Rock?

1. Mineral or Rock?

2. Mineral or Rock?

2. Mineral or Rock?

3. Mineral or Rock?

3. Mineral or Rock?

4. Mineral or Rock?

4. Mineral or Rock?

1. Mineral: (Biotite)

1. Mineral: (Biotite)

2. Mineral: (Olivine)

2. Mineral: (Olivine)

3. Mineral: (Quartz)

3. Mineral: (Quartz)

4. Mineral: (Muscovite)

4. Mineral: (Muscovite)

What is a mineral? • A mineral is a naturally occurring, inorganic solid that

What is a mineral? • A mineral is a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition

5 Characteristics that all minerals share 1. 2. 3. 4. 5. Naturally occurring Inorganic

5 Characteristics that all minerals share 1. 2. 3. 4. 5. Naturally occurring Inorganic Solid Crystal structure Definite chemical composition

Naturally Occurring • Naturally Occurring means that the substance must occur in nature, it

Naturally Occurring • Naturally Occurring means that the substance must occur in nature, it can not be created or manufactured by people.

Inorganic means that a mineral can not come from something that was once living.

Inorganic means that a mineral can not come from something that was once living.

Solid A Solid has a definite volume and shape, its particles are tightly packed

Solid A Solid has a definite volume and shape, its particles are tightly packed together and can not move easily.

Definite chemical composition means that a mineral always contains certain elements in definite, or

Definite chemical composition means that a mineral always contains certain elements in definite, or exact, proportions Almost all minerals are compounds in which two or more elements are combined so they no longer have their distinct properties. Some elements occur in a pure form in nature and are considered minerals (almost all are metals such as copper, silver, and gold)

Crystal structure • Crystal structure means the particles that make a mineral line up

Crystal structure • Crystal structure means the particles that make a mineral line up in a pattern that repeats over and over again, this pattern creates a crystal. A crystal has flat sides called faces that meet at sharp edges and corners

Crystal structure

Crystal structure

Watch “Crystals” by Brainpop… 1. What element are diamonds made from? 2. What do

Watch “Crystals” by Brainpop… 1. What element are diamonds made from? 2. What do all crystals have in common?

Groups of Minerals • Minerals are grouped by the elements they are made of.

Groups of Minerals • Minerals are grouped by the elements they are made of. Beryl (Emerald) Calcite Amethyst

Mineral Group Silicates Characteristics n. Contain oxygen & silica n. The most abundant group

Mineral Group Silicates Characteristics n. Contain oxygen & silica n. The most abundant group of minerals MICA Examples Quartz, mica Quartz

Mineral Group Non-Silicates Silver Characteristics n. Make up only 5% of the Earth’s crust

Mineral Group Non-Silicates Silver Characteristics n. Make up only 5% of the Earth’s crust n. Include some of the most important minerals Examples iron, copper, gold, silver, diamonds, rubies Copper Diamond Gold Ruby Iron

How do minerals form? n 1) Cooling of magma (hot, liquid rock and minerals

How do minerals form? n 1) Cooling of magma (hot, liquid rock and minerals inside the earth (from the mantle)) n Fast Cooling = No Crystals (mineraloids) n Medium Cooling = small crystals n Slow Cooling = large crystals

How do minerals form? • 2) Elements dissolved in liquids (usually water)

How do minerals form? • 2) Elements dissolved in liquids (usually water)