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	Cerro Blanco
Synonyms: Cerro Blanco del Robledo
Location: 26º46'S; 67º43'W
Country: Argentina
Summit Elevation: 4400m
Edifice Height: 200m
Type: Dome

Cerro Blanco lies on the southern rim of the Robledo caldera, and is surrounded by an extensive apron of pumice fall deposits. It is unusual in that the lava is of high silica rhyolite composition, isotopically distinct from the dacites of the near-by Cerro Galan caldera (Francis et al.1989). It also differs from the other two centers in the well preserved pyroclastic flows were erupted prior to the extrusion of the dome. These are best exposed on the floor of the Robledo caldera.