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Related Flashcards
Cards In This Set
| Front | Back |
 PhaneriticLight Colorlow densityWhite,Gray, Pink; black minerals are rare |
Granite
|
 PhaneriticIntermediate ColorSalt and Pepper;white/black 50-50 |
Diorite
|
 PhaneriticDark ColorNo light minerals; dark grey to black |
Gabbro
|
 AphaniticLight ColorWhite,Grey, Pink |
Rhyolite(Felsite-can't be positively identified)
|
 AphaniticIntermediate ColorDark Grey typical; but other colors too |
Andesite
|
 AphaniticDark ColorDark gray to blackDivergent plate margins (ocean rift centers), mantle hotspots |
Basalt
|
 PhenocrystLight ColorPhenocrysts of orthoclase and/or quartz |
Rhyolite Porphory
|
 PhenocrystIntermediate ColorPhenocrysts of amphibole and/or plagioclase |
Andesite Porphory
|
 PhenocrystDark ColorPhenocrysts of olivine |
Basalt Porphyry
|
 VesicularLight color and light weightwhite to gray; spun-glass look |
Pumice
|
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VesicularDark Color and light weightblack, brown red
|
Scoria
|
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VesicularDark Color and heavyblack, gray to brownish
|
Vesicular Basalt
|
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FragmentalAny color; volcanic fragments cemented togetherSmall, welded volcanic fragments; often stretched out
|
Volcanic Tuff
|
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FragmentalAny color; volcanic fragments cemented togetherAngular volcanic fragments larger than 64mm
|
Volcanic Breccia
|
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PhaneriticLight Green; granular, some blackOlivine and/or Pyroxene; no feldsparvery high density
|
Peridotite
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