geyserite

Its 12-foot-high geyserite cone is one of the largest in the park.

The rocks in the nearby region produce a material called geyserite.

It is noted for the particularly large geyserite sinter deposits, which form its cone.

Many of these features build up sinter, geyserite, or travertine deposits around and within them.

Its scalloped edge is made of geyserite.

Examples of siliceous sinter are geyserite and fiorite.

Botryoidal geyserite is known as fiorite.

The thermal spring on the west flank, 4.2 kilometres below the surface, was still active, and the resulting geyserite formation was clearly abiologic in origin.

Bead Geyser was named after the geyser eggs, loose spherical pieces of geyserite, that used to be found near the geyser.

Giant is notable for its spectacular, but sporadic eruptions, as well as for its very large cone of geyserite, which stands about 12 feet tall.

Pink Geyser was named for the shell-pink color of the geyserite around its vent which is a caused by the presence of manganese and iron oxides.

Silica precipitates at the surface to form either geyserite or sinter, creating the massive geyser cones, the scalloped edges of hot springs, and the seemingly barren landscape of geyser basins.

Sedimentary textures which appear to have formed in the hydrothermal vents themselves are preserved with a brecciated texture; "geyserite", a sediment with a botryoidal form reminiscent of modern vent margins, is also found.

Nearby White Dome Geyser, which erupts considerably more frequently (albeit less powerfully) from a large geyserite cone, is easily seen from the same parking lot that affords a viewpoint for Great Fountain.

Most geysers form in places where there is volcanic rhyolite rock which dissolves in hot water and forms mineral deposits called siliceous sinter, or geyserite, along the inside of the plumbing systems which are very slender.