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Rocks and Minerals. By: Brianna Shields January 21, 2005. DO NOW. 1. Which group of planets have solid, rocky surfaces? 2. Which object is a “dirty snowball” made of rock, dust and ice, that orbits the sun? 3. What are the bowl shaped areas on the moon called?. GOAL.

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Rocks and minerals

Rocks and Minerals

By:

Brianna Shields

January 21, 2005


Do now
DO NOW

  • 1. Which group of planets have solid, rocky surfaces?

  • 2. Which object is a “dirty snowball” made of rock, dust and ice, that orbits the sun?

  • 3. What are the bowl shaped areas on the moon called?


GOAL

  • To be able to distinguish between a rock and a mineral

  • To know the characteristics used to identify rocks and minerals


Rocks vs minerals

Rock

Hard substance made of one or more minerals

Rocks vs. Minerals


Rocks vs minerals1

Mineral

Occurs in nature

Solid

Definite chemical structure

Crystal shape

Rocks vs. Minerals


Video identifying rocks
VIDEO: Identifying Rocks

  • FOCUS QUESTION:

    • Name five simple properties or tests used to identify minerals



Rocks vs minerals2

Color

DEF: observed coloration

DETERMINED BY:

Look at mineral

Not always reliable

Rocks vs. Minerals


Rocks vs minerals3

Luster

DEF: way it reflects light off its surface

DETERMINED BY:

Observe mineral

Metallic or nonmetallic

Rocks vs. Minerals


Rocks vs minerals4

Hardness

DEF: ability to resist being scratched

DETERMINED BY:

Rub against other minerals on hardness scale

Rub on glass, steel nail or penny

Rocks vs. Minerals



Rocks vs minerals5

Streak

DEF: color of powder scraped off

DETERMINED BY:

Rub on a porcelain tile

Rocks vs. Minerals


Rocks vs minerals6

Density

Click here for Density Simulator

DEF: number of particles in a space

DETERMINED BY:

Mass / volume

Never changes for a mineral

Rocks vs. Minerals


Rocks vs minerals7

Crystal Shape

DEF: shape of atoms in mineral when formed

DETERMINED BY:

Look at small bits of mineral

Rocks vs. Minerals



Rocks vs minerals8

Cleavage or Fracture

DEF: how mineral breaks (layers, jagged, smooth)

DETERMINED BY:

Break mineral (hammer or hands)

Rocks vs. Minerals


Rocks vs minerals9

Other mineral properties

Magnetic

Magnetite

Rocks vs. Minerals


Rocks vs minerals10

Other mineral properties

Glows under UV light

Fluorite, Calcite

Rocks vs. Minerals


Rocks vs minerals11

Other mineral properties

Tastes salty

Halite

Rocks vs. Minerals


Rocks vs minerals12

Other mineral properties

Smells like rotten eggs

Sulfur

Rocks vs. Minerals


Rocks vs minerals13

Other mineral properties

Fizzes in acid

Calcite

Rocks vs. Minerals


Rocks vs minerals14

Other mineral properties

Radioactive

Uraninite

Rocks vs. Minerals











How can a mineral’s density be used to identify the mineral?

Each mineral

has a unique

density that

doesn't change




Assessment
Assessment mineral?

  • Click on the link below to learn about some common uses of minerals

  • Common Uses for Minerals


Assessment1
Assessment mineral?

  • Look at the mineral you are given

  • Describe it’s:

    • Color

    • Luster

    • Hardness

    • Streak

    • Crystal Shape

    • Cleavage or Fracture

    • Other interesting characteristics


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