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Rock and Mineral Test Practice

Explore a wide variety of rocks and minerals with this informative guide. Understand key characteristics such as color, crystal size, and formation type—covering igneous, sedimentary, and metamorphic rocks. Learn to identify and differentiate andesite, coal, conglomerate, diorite, gabbro, and more. Gain insights into minerals like galena, hematite, and biotite, along with their unique properties. Perfect for students and enthusiasts, this guide provides essential knowledge for rock and mineral identification.

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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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