Amygdaloidal basalt, Rio Grande do SulYour model is disabled. For more details go to Edit properties3D Model
Amygdaloidal basalt from Vacaria, Rio Grande do Sul, Brazil. The fine grained basalt has abundant, rounded vesicles where gas bubbles formed during eruption and solidification. The vesicles have been partially infilled by celadonite (green) and quartz (white). This sample is part of the teaching collection at Camborne School of Mines, University of Exeter.