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A-Level Geology > Mineral data Sheet Annotations > Flashcards

Mineral data Sheet Annotations Flashcards

1
Q

Streak

A

Don’t use streak to identify a mineral if it scratches the streak plate

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2
Q

Feldspars

A

Orthoclase - simple twin 1/2 and 1/2 - can also be grey
Plagioclase - multiple repeated twin looks look stripes - can also be pink

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3
Q

Sedimentary minerals

A

Quartz
Orthoclase Feldspar
Muscovite Mica
Calcite
Clay minerals
Lithic fragments

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4
Q

Evaporates (Salts)

A

Calcite
Halite
Gypsum

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5
Q

Muscovite Mica

A

Bendy - allows it to be a resistant material when rock is being weathered even though it is a soft mineral

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A-Level Geology (3 decks)

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