| 21. | Sahand is made chiefly of dacite and associated felsic rocks.
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| 22. | The ore deposits reside in veins present in the dacite volcanic dome.
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| 23. | About of dacite erupted in Garibaldi's third period of activity.
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| 24. | Rocks of dacite composition show that within magma chambers frational crystallization occurred.
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| 25. | The volcanic cones are composed of andesite, basaltic andesite and dacite.
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| 26. | Granodiorite is felsic to intrusive igneous equivalent of the extrusive igneous dacite.
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| 27. | The north east of the suburb has dacite from the Canberra Formation.
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| 28. | Dykes have outcrops of trachytic andesite, dacite and rhyodacite.
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| 29. | Andesites contain quartz and dacites-rhyodacites contain sanidine megacrysts.
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| 30. | Guallatiri has erupted andesite, dacite and rhyolite, with dacite dominating.
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