1. 5:57 PM October 24, 2011Sanders Unit 2: Rocks and Minerals 2-2 What Are Mineral Properties?

2. 5:57 PM December 13, 2015Unit 2: Rocks and Minerals Identify Minerals  Physical properties can be used to identify minerals.

3. 5:57 PM December 13, 2015Unit 2: Rocks and Minerals Colors  Color alone cannot be used to identify a mineral.  Quartz comes in many colors.

4. 5:57 PM December 13, 2015Unit 2: Rocks and Minerals Colors  Some minerals have the same color.  This is why you can’t use color as an identifying property.  gold  pyrite  Some minerals have the same color.  This is why you can’t use color as an identifying property.  gold  pyrite

5. 5:57 PM December 13, 2015Unit 2: Rocks and Minerals Streak  The color of the powder left by a mineral is called streak.  The mineral above left a reddish-brown streak, what is it?

6. 5:57 PM December 13, 2015Unit 2: Rocks and Minerals Density  Density or specific gravity can be used to identify minerals.  Prospectors pan for gold because gold has a greater specific gravity than other minerals.  Density or specific gravity can be used to identify minerals.  Prospectors pan for gold because gold has a greater specific gravity than other minerals.

7. 5:57 PM December 13, 2015Unit 2: Rocks and Minerals Mineral Structures  Minerals can be identified by their structure; whether the crystal  cleaves  fractures.

8. 5:57 PM December 13, 2015Unit 2: Rocks and Minerals Hardness  The property of a mineral to resist being scratched is its hardness.  A harder mineral can scratch a softer mineral.  The property of a mineral to resist being scratched is its hardness.  A harder mineral can scratch a softer mineral.

9. 5:57 PM December 13, 2015Unit 2: Rocks and Minerals Luster  The way a mineral reflects light from its surface is called luster.  Metallic  Non-metallic