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Science > Ch 26 Vocab > Flashcards

Ch 26 Vocab Flashcards

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0
Q

Streak

A

Shows color of a mineral in powder form

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1
Q

Mineral

A

Inorganic solid with crystalline structure

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2
Q

Cleavage

A

The way a mineral breaks along a smooth flat or proffered plane

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3
Q

Fracture

A

The way a mineral breaks unevenly or with irregular surfaces

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4
Q

Luster

A

The way a mineral reflects light

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5
Q

Hardness

A

The Minerals resistance to scratching

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6
Q

Silicates

A

Classification of the mineral group most important by volume of the earths crust

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7
Q

Non-Silicates

A

Minerals that don’t contain silicon

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8
Q

Rock

A

A naturally formed mixture that contains minerals, rock fragments, or volcanic gases

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9
Q

Texture

A

Describes size, shape, and arrangement

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10
Q

Igneous

A

Rocks formed from molten material that cools underground or on earths surface

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11
Q

Intrusive igneous

A

Formed when magma cools slowly below the earths surface

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12
Q

Extrusive igneous

A

Forms when lava or ash erupts and cools quickly on the earths surface

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13
Q

Clasts

A

Small rock and mineral fragments

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14
Q

Pore space

A

Empty space between clasts usually found in sedimentary rocks

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15
Q

Compaction

A

Process of clasts sticking together caused by the weight of overlying material

16
Q

Cementation

A

Is the process of materials precipitate slowly out of water

17
Q

Sedimentary rock

A

Made up of primarily compacted and cemented grains, clasts, or biological material

18
Q

Metamorphic rock

A

Formed when pre-existing rocks were changed by heat and pressure

19
Q

Foliated

A

A metamorphic rock texture where crystals are arranged in layers

20
Q

Non foliated

A

Metamorphic rock texture that has random crystal orientation

21
Q

Rock cycle

A

Continual changing of rocks into different rock types

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