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glg101r1_appendix_g_rock_identification[1] - Dark Very Dark...

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Axia College Material Appendix G Igneous Rock Identification Full Name Date Examine the images of the five rocks. Identify as many characteristics as possible and enter the information in the table below. Based upon the observed characteristics, identify each specimen in the last column of the table. You may want to refer to Table 4.1 of Geoscience Laboratory (p. 81). Submit the completed Appendix in the Individual forum. Rock Specimen 1. 2. 3. 4.
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5. Rock Identification Specimen number Color Texture Recognizable Features Rock Name Light Intermediate
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Unformatted text preview: Dark Very Dark Coarse Fine Porphyritic Glassy Vesicular Pyroclastic x x x x x Light colored feldspar ‘floating’ in sea of black fine textured matrix Porphyritic basalt 1. x x x Light, dark gray, feldspars, black gerromageisan minerals Diorite 2. x x black volcanic crystalline rock Basalt 3. x x pink feldspars, black gerrogmagnesian minerals, transparent quartz Granite 4. x x red, black ,dense glass,sharp edges conchoidal fracture Obsidian 5. x x White grayish, glassy, light weight. Pumice...
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  • Spring '10
  • Igneous Rock Identification, Granite, basalt Diorite Basalt, Specimen number Color, Intermediate Texture Recognizable

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