| 11. | The facade has three doors which are framed by travertine marble.
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| 12. | The 17th-century travertine pulpit was completed by Antonio Giosafatti.
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| 13. | The main altar was consecrated in 1422 and made with travertine.
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| 14. | Near the falls are caves created by the travertine outcroppings.
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| 15. | The travertine falls apart, but the center holds on.
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| 16. | She expected to receive reports on erratic heating units and cracked travertine.
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| 17. | The calcium carbonate can then precipitate to form rocky layers of travertine.
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| 18. | Flowing through it is Havasu Creek, which has extensive travertine deposits.
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| 19. | Travertine is one of the most frequently used stones in modern architecture.
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| 20. | Two or three small travertine producers operate in the western United States.
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