Based upon Physical properties.  A solid that has a structure arranged in orderly fixed patterns.

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Presentation transcript:

Based upon Physical properties

 A solid that has a structure arranged in orderly fixed patterns.

 Luster is the appearance of light reflected from the surface of a mineral.  Metallic Luster  Non metallic Luster.

 Although the most obvious, it is the least reliable way to identify a mineral.

 Streak is the color of a mineral in its powdered form by rubbing the mineral across a piece of unglazed porcelain.

 Most useful!  Hardness is the measure of the resistance of the mineral to abrasion.  Use the Moh’s Scale.

 Tendency of a mineral to break along a plane and produce a smooth surface.

 Minerals that do not cleave, fracture.

 Will it be attracted to a magnet?

 Taste- Halite is salty ( DO NOT TASTE IT!)  Texture- rough, smooth, oily, soapy (Talc is “soapy” feeling.  Chemical Reaction to hydrochloric acid. (Calcite).