Salto do Jacuí, Rio Grande do Sul, South Region, Brazil

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Chalcedony (Var: Agate) : SiO₂
	Salto do Jacuí, Rio Grande do Sul, South Region, Brazil Large polished slab of agate. Harvard Museum of Natural History specimen no. 134036. The label is about 8 cm long. P. Cristofono photo.
© 2007 Peter Cristofono	Photo ID: 95561 View Count: 329

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Salto do Jacuí, Rio Grande do Sul, South Region, Brazil

Chalcedony (Var: Agate) : SiO2

Chalcedony (Var: Agate) : SiO₂