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黒玢岩 (kokuhingan) Japanese meaning: melaphyre | Kotomora

黒こく玢ひん岩がん

Meanings

1

melaphyre

A dark, fine-grained igneous rock; a technical term used in geology and mineralogy.

この地ち域いきの地ち層そうには黒こく玢ひん岩がんが多おおく含ふくまれている。
The strata in this area contain a lot of melaphyre.

Kanji

黒black
玢
岩boulder, rock, cliff

Etymology

The term is composed of 黒 (black), 玢 (a rare kanji for a type of jade or patterned stone), and 岩 (rock). The exact derivation of the reading こくひんがん is uncertain, but it follows standard Sino-Japanese on'yomi patterns for geological terms.