A greenish crystalline rock containing chiefly hornblende and feldspar; greenstone (greenstone, n. 3).
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| 释义 | the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > plutonic rocks > greenstone (11) grunstein1784 A greenish crystalline rock containing chiefly hornblende and feldspar; greenstone (greenstone, n. 3). verd1799 Geology ? = greenstone, n. 3. Obsolete. greenstone1800 Geology. Any of various rocks (typically altered igneous rocks) which are coloured green by feldspar, hornblende (or augite), and other minerals (cf… Subcategories:— varieties of (8) |
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