Mrs. Johnson's Mineral Lesson

Mrs. Johnson's Mineral Lesson

How do scientist identify a mineral?

Objective

• Goal: Test the physical properties of minerals, including hardness, color, luster, and streak 

• Teks: 6.6C

Minerals

• What is a mineral?

• How are minerals classified?

• How do scientist identify a mineral?

What is a mineral?

• Solid

• Naturally occurring (NOT man-made)

• Inorganic (is NOT alive and never was, nonliving)

• Formula (most are formed from compounds of two or more elements)

• Crystal structure

• Can you SNIFC it?

Definition:

A mineral is a naturally formed, inorganic solid that has a definite crystalline structure.

Questions to ask yourself if determining if an item is a mineral or not:

• Is it a non-living material?

• Is it a solid?

• Is it formed in nature?

• Does it have a crystalline structure?

Multiple Choice

Wood

• Yes it's a mineral

• Not a mineral

Multiple Choice

Gold

• Yes it's a mineral

• Not a mineral

Multiple Choice

Fossil

• Yes it's a mineral

• Not a mineral

Multiple Choice

Topaz

• Yes it's a mineral

• Not a mineral

Multiple Choice

Bones

• Yes it's a mineral

• Not a mineral

How are minerals classified?

• by

• using

• their

• physical properties

• 
  

• 
  

Multiple Choice

How are minerals classified?

• by color only

• by their physical properties

• by whatever you say

Physical Properties of Minerals are-

• Color (easy to see)

• Hardness (use Mohs scale)

• Luster (how it reflects light)

• Streak (color of minerals powder when scratched on a streak plate)

• CHLS?

Multiple Choice

All are physical properties of minerals EXCEPT-

• size

• hardness

• luster

• streak

How would you test a mineral to see what mineral it is?

• look at the color

• use Mohs Mineral Hardness scale

• hold it under a lamp to see how it reflects light

• rub it on a streak plate to see the color of the mineral's powder

• CHLS?

Multiple Choice

What does this test?

• Color

• Hardness

• Luster

• Streak

Multiple Choice

What does this test?

• Color

• Hardness

• Luster

• Streak

Multiple Choice

What does this test?

• Color

• Hardness

• Luster

• Streak

Multiple Choice

Can a mineral be classified using only color?

• yes

• no

Summary

Minerals are solid, inorganic, have a crystal structure, and form naturally. Color, hardness, luster, and streak are the physical properties used to classify minerals.