Minerals Flashcards by Marianne Rolliston

Q

What is the shape of Quartz?

A

Irregular

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Q

What is the color of Quartz?

A

Varies (often white or grey)

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Q

What is the hardness of Quartz?

A

7

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Q

What is the cleavage/fracture of Quartz?

A

None / irregular

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Q

What is the lustre of Quartz?

A

Vitreous / shiny

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Q

What is the density of Quartz?

A

2.7

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Q

What is the streak of Quartz?

A

None

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Q

What is the shape of Feldspar?

A

Approximately rectangular

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Q

What are the possible colors of Feldspar?

A

Pink, white, or grey

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Q

What is the hardness of Feldspar?

A

6

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Q

What type of cleavage/fracture does Feldspar have?

A

Two directions almost at right angles (90°)

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Q

What is the lustre of Feldspar?

A

Vitreous / dull

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Q

What is the density of Feldspar?

A

2.6

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Q

What is the streak color of Feldspar?

A

White

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