Stock Photo - Andesite and ignimbrite rocks. Andesite (black) is a volcanic or extrusive rock with aphanitic or porphyritic texture. Is an intermediate rock between basalt and dacite. Ignimbrite (white) is a a deposit of pyroclastic flow. Cabo de Gata, Almeria, Andalusia, Spain.

Stock Photo: Andesite and ignimbrite rocks. Andesite (black) is a volcanic or extrusive rock with aphanitic or porphyritic texture. Is an intermediate rock between basalt.

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