Geyserite, or siliceous sinter, is a form of opaline silica that is often found as crusts or layers around hot springs and geysers. Botryoidal geyserite...

cooling, the silica is deposited as geyserite, a form of opal (opal-A: SiO2·nH2O). This process is slow enough that geyserite is not all deposited immediately...

Ménilmontant (Paris), France, where it occurs as concretions within bituminous Early Oligocene Menilite Shales. Geyserite Hyalite Menilite on Mindat.org v t e...

aqueous solution Flint – Cryptocrystalline form of the mineral quartz Geyserite – Form of opaline silica often found around hot springs and geysers Greywacke –...

masses. Named after Santa Fiora, Italy, fiorite is used as a gemstone. Geyserite Manutchehr-Danai, Mohsen (2000). Dictionary of Gems and Gemology. Springer-Verlag...

enables a geyser to erupt is a material called geyserite found in rocks nearby the geyser. Geyserite, mostly silicon dioxide (SiO2), is dissolved from...

hyalite, a colorless glass-clear opal sometimes called Muller's glass; geyserite, also called siliceous sinter, deposited around hot springs or geysers;...

earliest known life on land may have been found in 3.48-billion-year-old geyserite and other related mineral deposits (often found around hot springs and...

caldera. Many of the thermal features in Yellowstone build up sinter, geyserite, or travertine deposits around and within them. The various geyser basins...

earliest known life on land may have been found in 3.48-billion-year-old geyserite and other related mineral deposits (often found around hot springs and...

may be stromatolites which have been found in 3.480-billion-year-old geyserite uncovered in the Dresser Formation of the Pilbara Craton of Western Australia...

known life on land on Earth may have been found in 3.48-billion-year-old geyserite and other related mineral deposits (often found around hot springs and...

of Yellowstone National Park. It is noted for the particularly large geyserite sinter deposits, which form its cone. These deposits have been likened...

hydrothermal vents themselves are preserved with a brecciated texture; "geyserite", a sediment with a botryoidal form reminiscent of modern vent margins...

earliest known life on land may have been found in 3.48-billion-year-old geyserite and other related mineral deposits (often found around hot springs and...

earliest known life on land may have been found in 3.48-billion-year-old geyserite and other related mineral deposits (often found around hot springs and...

org database) Pink Geyser was named for the pinkish coloration of the geyserite around its vent, which is attributed to manganese oxide and iron oxide...

waiting for eruptions of nearby Great Fountain Geyser. Its 12-foot-high geyserite cone is one of the largest in the park. Eruptions are unpredictable, but...

currently active geysers only have small irregular eruptions. Sinter and geyserite is prominent, forming low and wide domes around active or extinct geothermal...

temperature is approximately 194.4 °F (90.2 °C). Its scalloped edge is made of geyserite. Eruptions can occur in Doublet Pool, but only last up to 8 minutes. The...

surfaces, which sometimes support splash mounds. The cones are made out of geyserite. Other geysers and fountains instead discharge from within rim-bounded...

spectacular, but sporadic eruptions, as well as for its very large cone of geyserite, which stands about 12 feet tall. On September 18, 1870, the Washburn-Langford-Doane...

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

hot spring. The term botryoidal refers to the subspherical, grape-like geyserite structures around the vent. In 1996, seismic activity resulted in the...

erupts considerably more frequently (albeit less powerfully) from a large geyserite cone, is easily seen from the same parking lot that affords a viewpoint...

location of the loading station of the 4 km-long narrow-gauge railway to a geyserite works (now Bremthaler Quarzitwerk) and a siding from Raiffeisen Waren-Zentrale...

location of the loading station of the 4 km-long narrow-gauge railway to a geyserite works (now Bremthaler Quarzitwerk) and a siding from Raiffeisen Waren-Zentrale...

activity has eroded the country rocks and left deposits, including sulfur, geyserites, sulfates, and chlorides, which are generated by the deposition of the...

are located 2 kilometres (1.2 mi) southwest of the volcano. Further, geyserite cones indicate that geysers were formerly active on the volcano. Seismic...

features include "spouters", geysers, hot springs and mud pools, as well as geyserite and sinter deposits that form small terrace structures. Geyser columns...