geyseriten.
/ˈɡeɪsərʌɪt/ Mineralogy.
A variety of opal, of concretionary form, found deposited about the orifices of geysers.
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the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > quartz > amorphous quartz or opal > geyserite
geyserite1814
pealite1873
1814 T. Allan Mineral. Nomencl. 22 Geyserite [printed Geyerite.].
1826 E. Emmons Man. Mineral. 220 Quartz..recent deposit from hot springs..Geyserite.
1879 F. Rutley Study of Rocks xiv. 303 Geyserite is a snow-white silicious sinter..which occurs incrusting the pipes of geysers.
This entry has not yet been fully updated (first published 1899; most recently modified version published online September 2018).
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n.1814