Term
Olivine Crystal Arrangement |
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Definition
Isolated Crystal Arrangement |
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Term
Pyroxene Crystal Arrangement |
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Definition
Single Chain Crystal Arrangement |
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Term
Amphibole Crystal Arrangment |
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Definition
Double chain Crystal Arrangement |
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Term
What are the six main families of silicate minerals? |
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Definition
(in order of silica content from lowest to highest)
Olivines, Pyroxines, Amphiboles, Micas, Feldspars, and Quarts
Mnemonic: Obese Peculiar Amphibians Mummify Fruit Quietly |
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Term
Silica Content of Olivines |
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Definition
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Term
Silica Content of Pyroxenes |
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Definition
Second Lowest Silica Content |
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Term
Silica Content of Amphiboles |
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Definition
Third Lowest Silica Content |
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Term
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Definition
Third highest silica content |
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Term
Silica content of feldspars |
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Definition
second highest silica content |
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Term
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Definition
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Term
melting point of olivines |
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Definition
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Term
melting point of pyroxenes |
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Definition
second highest melting point |
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Term
melting point of amphiboles |
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Definition
third highest melting point |
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Term
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Definition
third lowest melting point |
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Term
melting point of feldspars |
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Definition
second lowest melting point |
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Definition
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Term
What is the color of Olivines and are they ultramafic, mafic, or felsic |
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Definition
Olivines are green (like an olive) and they are ultramafic |
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Term
what is the color of pyroxenes and are they ultramafic, mafic, or felsic? |
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Definition
Pyroxenes are dark colored and they are mafic |
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Term
What is the color of amphiboles and are they ultramafic, mafic, or felsic? |
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Definition
Amphiboles are generally dark colored but can range in color from colourless to white, green, brown, black, blue, or lavender and they are mafic. |
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Term
What color are micas and are they ultramafic, mafic, or felsic? |
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Definition
Micas are dark to light in color and they are mafic |
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Term
what is the color of feldspars and are they ultramafic, mafic, or felsic? |
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Definition
Feldspars are light colored and felsic |
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Term
What is the color of quarts and is it ultramafic, mafic, or felsic? |
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Definition
Quarts is light in color and is felsic. |
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Term
List the six silicate mineral families in order of density from least dense to most dense |
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Definition
Olivines, Pyroxenes, Amphiboles, Mica, Feldspars, Quarts |
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Term
Would a mafic mineral be more likely to be high in Fe+/Mg content or K+/Na content? |
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Definition
Fe+/Mg content (think basalt coming out of the asthenosphere/mantle also think high melting point of mafic = deeper in the earth |
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Term
Would a felsic mineral be more likely to be Fe+/Mg rich or K+/Na rich? |
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Definition
K+/Na rich, differentiate by knowing that something iron/magnesium rich would have a higher melting point and would be mafic |
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