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25 Cards in this Set
- Front
- Back
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Mineral ; NIHHDS
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naturally occurring
inorganic homogenous solid definite chemical composition solid ordered internal structure |
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Mineraloid
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naturally occurring, inorganic material that is amorphous
ex. Glass, opal |
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Crystal Forms
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the orderly geometric spatial arrangement of atoms in the internal structure of a mineral
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Polymorphism
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crystallize in more than one configuration, which is dependent on the changes in temperature, pressure or both
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Crystal Habit
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the shapes and aggregates that a certain mineral is likely to form
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Crystal Habits
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Acicular - needle like
Fibrous - thready Bitryoidal - globular ; like grapes |
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Cleavage
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tendency of a mineral to break in particular directions due to zone of weakness in the crystal structure
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Examples of cleavage
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1 direction. - Muscovite
2 directions - Feldspar 3 directions - Halite or Calcite |
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Fractures
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Conchoidal - like glass
Splintery Uneven |
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Color
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caused by absorption or lack of absorption of various weathering light
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Idiochromatic
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one unchangeable color (Sulfur, malachete)
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Allochromatic
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impurities in chemical compositiin
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Streak
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color of a mineral in powdered form
metals : usually dark streak |
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Luster
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ability to reflect light
GLASSY ; PEARLY ; EARTHY; RESINOUS MEATAllIC |
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Hard
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Talc Gypsum Calcite Fluorite Apatite Orthoclase Quartz Topaz Corundum Diamond
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Specific Gravity
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ratio of volume of a substance and the weight of the samr volume of water
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Other Prop
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Magnetism - MAGNETITE
Fluorescence - FLUORITE Reduction yo chemical CALXIUM CARBonate TE |
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Economic importance
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Non renewable
Renewable |
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Non Renewable
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resources that create the resources are very slow
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Renewable
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sources of metals and other materials
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Ores
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useful metallic minerals that can be extracted and which contain useful substances
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Types of Ores
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Bauxite - Al
Chromite - Cr Bornite/Chalcopyrite - Cu Native gold - Au Hematite - Fe Sphalerite - Zn |
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Silicate Group
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largest group of minerals
Nesosilicate Inosilicate Phyllosilicate Tectosillicate |
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Non - silicate group
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Native elements
Oxides Sulfides Sulfates Carbonates Phosphate Halides Hydroxides |
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Most common forming minerals
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Feldspar, quartz, Olivine, Pyroxene, Amphibole , Mica,Clay, and Calcite
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