Igneous Rock Test

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Last updated 2:55 PM on 4/10/26

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23 Terms

1

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Pumice

Extrusive

Texture: Aphanitic, vesicular
Composition: Felsic
Minerals: Quartz, glass
Diagnostic: low density, frothy texture

2

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Vesicular Basalt

Extrusive

Texture: aphanitic, vesicular
Composition: mafic
Diagnostic: vesicular gray

3

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Rhyolite

Extrusive

4

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Tuff

Extrusive

5

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Porphyritic Andesite

Extrusive

6

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Massive Basalt

Extrusive

7

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Porphyritic Rhyolite

Extrusive

8

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Dacite

Extrusive

9

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Amydaloidal Basalt

Extrusive

10

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Porphyritic Trachyte

Extrusive

11

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Scoria

Extrusive

12

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Kimberlite

Extrusive

not rotating but know it

13

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Dunite

Intrusive

14

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Pegmatite

Intrusive

15

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Diorite

Intrusive

16

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Diabase/Dolerite

Intrusive

17

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Granite

Intrusive

<p><strong>Granite</strong></p><p>Intrusive</p>

18

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Tonalite

Intrusive

not rotating

19

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Peridotite/Pyroxenite

Intrusive

20

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Syenite

Intrusive

21

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Gabbro

Intrusive

22

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Aplite

Intrusive

23

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Anorthosite

Intrusive