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Rock and Mineral Test Practice

Rock and Mineral Test Practice. Andesite Medium Color – small crystals Andesitic, extrusive, igneous. 2. Coal Low specific gravity – no holes Organic Sedimentary. Conglomerate Made of large sediments Detrital, sedimentary. Coquina Made of shell fragments Organic, sedimentary.

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Rock and Mineral Test Practice

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  1. Rock and Mineral Test Practice

  2. Andesite • Medium Color – small crystals • Andesitic, extrusive, igneous

  3. 2 Coal Low specific gravity – no holes Organic Sedimentary

  4. Conglomerate Made of large sediments Detrital, sedimentary

  5. Coquina Made of shell fragments Organic, sedimentary

  6. Diorite Medium Color - large crystals Andesitic, intrusive, igneous

  7. Gabbro Dark color – large crystals Basaltic, intrusive, igneous

  8. Galena Metallic luster – high specific gravity Mineral

  9. Gneiss Layered – granular Foliated metamorphic

  10. Granite Light-colored, large crystals Granitic, intrusive, igneous

  11. Hematite Red color, dull luster Mineral

  12. Pumice Gas pockets – light-colored Extrusive, granitic, igneous

  13. Quartzite No layers– granular Nonfoliated metamorphic rock

  14. Red Slate Layered – red color Foliated metamorphic

  15. Sandstone Medium sediment size Detrital sedimentary

  16. Schist Layered – flaky Foliated metamorphic

  17. Scoria Gas pockets – dark color Basaltic, extrusive, igneous

  18. Shale Small sediment size Detrital Sedimentary

  19. Biotite Mica Black color – perfect cleavage Mineral

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