| 1. | Most types of igneous rocks display some degree of porphyritic texture.
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| 2. | The lava domes and San Antonio lava flows have porphyritic surfaces.
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| 3. | It is constructed from porphyritic dacite lava flows and lava domes.
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| 4. | Both have a pyroclastic texture with pumices bearing a porphyritic texture.
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| 5. | Mount Beerburrum ( 278m ) is composed of porphyritic trachyte.
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| 6. | More commonly, chondrules display what is known as a porphyritic texture.
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| 7. | In thin section, dacites may have an aphanitic to porphyritic texture.
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| 8. | This porphyritic texture is indicative of multi-stage cooling of magma.
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| 9. | The mountain is a volcanic feature known as a trachyte porphyritic texture.
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| 10. | The most common igneous rock type is porphyritic hornblende diorite.
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