Across
- 1. magnesium iron silicate with the chemical formula
- 4. the feel, appearance, or consistency of a surface or substance
- 6. a silicate mineral in the common mica group
- 7. formed from the cooling and solidification of molten rock
- 8. contains both silicon and oxygen
- 9. very soft silvery-white metal
- 11. the transformation of some fraction of the mass of a solid rock into a liquid
- 16. any rock derived from magma that was poured out or ejected at Earth's surface
- 17. a key factor in making several parts of the body run smoothly
- 18. a volcanic rock texture characterized by a rock being pitted with many cavitiesPegmatite
- 20. describes the temperature at which minerals crystallize when cooled or melted
- 21. light-colored plutonic rock found throughout the continental crust
- 22. a pale fine-grained volcanic rock of granitic composition, typically porphyritic in texture
- 23. consists of a solid solution between the albite and anorthite end-members
Down
- 2. formed when magma penetrates existing rock, crystallizes, and solidifies underground
- 3. textures occur in coarse, medium and fine-grained igneous rocks
- 5. processes which separate crystals from liquid
- 10. common in meteorites and in extrusive igneous rocks, especially basalt
- 12. composed primarily of plagioclase feldspar, amphibole, and pyroxine
- 13. a rare, blue-tinged, coarse-grained intrusive igneous rock sometimes containing diamonds
- 14. hot molten or semifluid rock erupted from a volcano
- 15. a dark, fine-grained, brown or grayish volcanic rock
- 19. type of ultramafic igneous rock that is composed of olivine