Examples of siliceous sinter are geyserite and fiorite. Botryoidal geyserite is known as fiorite. Its scalloped edge is made of geyserite. It is noted for the particularly large geyserite sinter deposits, which form its cone. The term botryoidal refers to the subspherical, grape-like geyserite structures around the vent. Further, geyserite cones indicate that geysers were formerly active on the volcano. Its 12-foot-high geyserite cone is one of the largest in the park.