Etymology and distribution of 黒金.

Kurogane 【黒金】^{レベル4
About 500}  The Japanese surnames etymology dictionary.

Hokkaidou , Aomori-ken Aomori-shi , Toukyou-to . Terrain . From the old village. Aomori-ken Hirosaki-shi Shimokuda silver town is the Hirosaki clan of the clan office, Ibaraki-ken Kasama-shi Kasama is the Kasama clan of the clan office, Ishikawa-ken Kanazawa-shi Marunouchi was in the Edo period in the Kaga clan of the clan government.

※ Sina series . Terrain . Added "village" to old. Kanagawa-ken Kawasaki-shi There is a record of naturalization on 26th September 1977 in Takatsu Ward. Last name is old. 古 Furu reference.