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MINERALS 2

LESSON 2

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VIDEO LOG: 
IN YOUR NOTEBOOK, RECORD 3 THINGS YOU LEARNED FROM THE VIDEO.

FOR YOUR NOTEBOOK:

Lesson 2:  Mineral Characteristics

Characteristics help us identify minerals.  Here they are:​

  1. Color - Used but unreliable

  2. Hardness - There is a scale called Moh's hardness scale.  You scratch the mineral with other items with known hardness values.  This helps you determine the hardness number of your mineral.

  3. Luster - What type of shine does it have?  How does light reflect off of it?  Describe with:

    1. Metallic​

    2. Non Metallic

      • Pearly​

      • Silky

      • Earthy or Dull

      • Glassy

      • Sparkly

  4. Streak - Color of a mineral's powder.  

  5. Fracture/Cleavage

    1. Fracture​ - When the mineral breaks, it looks irregular or non-uniform

    2. Cleavage - The mineral will break into smooth pieces.  It breaks along straight planes.

  6. Density - A mineral's mass divided by a mineral's volume.

  7. Other Properties - See how it reacts to other chemicals

    • Example:  Calcium filled minerals like Calcite will fizz when you add Hydrochloric Acid.  Dolomite ​is a mineral that is common in areas where we find sink holes.  Entire rows of houses have gone down in Quakertown!

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DRAWING EXERCISE

IN YOUR NOTES

As you work through this slides presentation, simply add drawings to the notes based on what you see.

CHECK IT OUT

READ TO FIND OUT HOW SINKHOLES ARE FORMED

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