Lab 3 Chapter Slide

Lab 3 Chapter Slide - MINERALS Naturally occurring...

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MINERALS • Naturally occurring • Crystalline Solid • Inorganic substance • Fairly definite chemical composition • Distinctive physical properties. Examples: Salt ? Sugar ? Water ?
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Each mineral has a unique set of primary diagnostic properties • Determined by observation or performing a simple test How do minerals form? Minerals form through a process called crystallization . This is the growth of a solid from either a liquid or gas. MINERAL FORMATION
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The properties of minerals are: Color, Streak, Luster, Crystal form, Hardness, Cleavage and Fracture . C o l o r (The color of the mineral) Generally unreliable for mineral identification Clarity: (transparent, translucent, opaque) clear foggy can’t transmit light PHYSICAL PROPERTIES OF MINERALS
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C C o o l l o o r r : only in some cases we can rely on it PHYSICAL PROPERTIES OF MINERALS K-feldspar usually has a salmon color Pyrite has a brass yellow ! check your box !
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Streak : Color of a mineral in its powdered form The color of streak left by scratching the mineral on a piece of white tile (or glass)
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This note was uploaded on 02/02/2011 for the course GEOL 101 taught by Professor Knapp during the Fall '08 term at South Carolina.

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Lab 3 Chapter Slide - MINERALS Naturally occurring...

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