4. True or false: Geodes and agates are formed in the same way. False. Agates develop as successive deposits of silica precipitate out of groundwater, filling the cavity completely. In contrast, geodes form when the mineral deposits do not completely fill the cavity. Learn More: What Are Ge...
sanding the surface until the roughness created with the 100 grit is smoothed out. Switch to 400, then 800, then 1200-grit sandpapers, using each to pass over the fossil surface removing the