| 11. | Its quartz sand beach is a Clean Beaches Counsel certified beach.
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| 12. | Although majority of the stone tools were made from cryptoscalline quartz.
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| 13. | Oceanic crust is hydrothermally altered causing addition of quartz and sodium.
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| 14. | Wolframite is found in quartz veins and pegmatites associated with intrusives.
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| 15. | The Ouachitas are noted for quartz crystal deposits around the whetstones.
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| 16. | Like other quartz gems, it is a silicon dioxide crystal.
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| 17. | The granite generally consists of quartz, hornblende, and feldspars.
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| 18. | The main minerals are quartz, perthitic orthoclase, and plagioclase.
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| 19. | Associated minerals are other zeolites, prehnite, calcite and quartz.
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| 20. | Hattaway offers glimpses of one of the parks many quartz veins.
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