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32 Cards in this Set
- Front
- Back
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Igneous Rock with major minerals:
Quartz K-Feld Na-Feld |
Granite
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Igenous Rock with major minerals:
K-Feld (minor possibly sodalite) |
Syenite
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Igneous Rock with major minerals:
Quartz Na/Ca Feld Hornblende Biotite |
Tonalite
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Igneous Rock with major minerals:
Na/Ca Feld Hornblende |
Diorite
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Colors of Rhyolite:
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White to Redish (can be faint purple)
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Colors of Trachyte:
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White
Light gray Light brown Greenish Orange |
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Colors of Dacite:
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Gray
*sometimes has minor quartz |
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Colors of Andesite:
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Gray
Dark Brown Greenish |
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Rock with these minor minerals:
Hornblende biotite muscovite |
Granite
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Rock with these minor minerals:
Na/Ca Feld Hornblende Biotite feldspathoids (some) Sodalite |
Syenite
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Rock with
Major Minerals: Quartz, Na/Ca Felds, Horn Minor minerals: K-feldspar |
Tonalite
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What is a rock where the entire rock is made up of large crystals, which are generally 1/2 mm to several centimeters in size; no fine matrix material is present.
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Phaneritic
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This rock texture consists of small crystals that cannot be seen by the eye with or hand lens.
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Aphenitic
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This rock texture is composed of at least two minerals having a conspicuous (large) difference in grain size.
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Porphyritic
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What texture?
What Rock type? (aphenitic ground mass) |
Porphyritic Andesite
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What texture?
What Rock type? (aphenitic ground mass) |
Porphyritic Andesite
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What rock texture?
What rock type? (has quartz, K-feld, Na-feld) |
Granite
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What rock type?
(no crystals) |
Rhyolite
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What rock texture?
What rock type? (no crystals in ground mass) |
Porphyritic Andesite
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What rock texture?
What rock type? (no crystals in ground mass) |
Porphyritic Andesite
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What rock type?
(no crystals) |
Dacite
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What rock type?
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Dacite
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What rock texture?
What rock type? (no crystals in ground mass) |
Porphyritic Rhyolite
(although it looks almost black it had a red tint) |
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What rock type?
(Na/Ca Felds, Hornblende) |
Diorite
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What rock type?
(no crystals in ground mass) |
Rhyolite
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What rock texture?
What rock type? (no crystals in ground mass) |
Aphenitic Rhyolite
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What rock texture?
What rock type? (has k-felds) |
Syenite
(I say porphorytic) |
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What rock texture?
What rock type? (no crystals in ground mass) |
Trachyte, porphyritic
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What rock type?
(no crystals in ground mass) |
Trachyte
(greenish) |
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What rock type?
(no crystals in ground mass) |
Trachyte
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Rock with these minor minerals:
Pyroxene Biotite traces of quartz |
Diorite
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What rock type?
(Na/Ca Felds, Hornblende) |
Diorite
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