| 1. | Quartzite is also mined in Brazil for use in kitchen countertops.
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| 2. | Tintic Quartzite is found on the northern third of the island.
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| 3. | Red quartzite deposits and grey andesite lava intrusions are also present.
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| 4. | An Arenigian age quartzite formation is equivalent to the Amorican Quartzite.
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| 5. | An Arenigian age quartzite formation is equivalent to the Amorican Quartzite.
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| 6. | The Falklands stone runs are made up of hard quartzite blocks.
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| 7. | Sioux quartzite blocks quarried in Minnesota were used for the walls.
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| 8. | The pebbles are mostly quartzite, but include dolerite and agate.
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| 9. | The primary rocks are Quartzite overlaid with an irregular slaty formation.
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| 10. | These hills are composed of quartzites, phyllites and sedimentary origin.
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