noun
A mineralogical term for a siliceous sinter deposited by hot springs or geysers.
温泉地では、珪華がよく見られる。
Geyserite is often seen in hot spring areas.
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.