A mineralogical term for a siliceous sinter deposited by hot springs or geysers.
Geyserite is often seen in hot spring areas.
Variant kanji spelling using 硅 instead of 珪; less common.
The kanji 珪 (silicon) and 華 (flower/splendor) combine to describe the siliceous, often flower-like deposits formed by hot springs. The reading is on'yomi.