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Hornblende andesite porphyryHornblende andesite porphyry is an intermediate volcanic igneous rock. Like most porphyrys, it cooled at two separate rates, causing two sizes of crystals to be visible. Additional recommended knowledgeSource: [1] |
| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Hornblende_andesite_porphyry". A list of authors is available in Wikipedia. |
