鉱泉

1. Origins, structure, and basic meaning

• Structure: The geological noun 鉱泉 (こうせん) denotes a mineral spring whose water contains dissolved minerals.
• Basic usage: A spring can 鉱泉が湧く, and research may examine 鉱泉に含まれる成分.

2. Common pitfalls and similar expressions

• A mineral spring
  • It does not automatically imply hot water; the mineral content is the defining point.