单词 | granogabbro |
释义 | granogabbro [¦gra·nō`ga·brō] PETROLOGY Plutonic rock composed of quartz, basic plagioclase, potash-feldspar, and at least one ferromagnesian mineral; intermediate between a granite and a gabbro, and in a strict sense, a granodiorite with more than 50% boric plagioclase. |
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