English
geyserite
From geyser + -ite.
A compound of geyser + -ite
Proto-Germanic *geusaną ‘to erupt’
Proto-Germanic *gausijaną ‘to make erupt’
Old Norse geysa ‘to gush’
Icelandic geysa ‘to gush’
Icelandic Geysir ‘Gusher’
English geyser
Today it means
noun A type of stone, a mixture of quartz and opal deposited by a geyser as it precipitates out of the boiling water.
Language periods are conventional ranges, not dates for this word.
Etymograph / geyserite