| 单词 | green peach |
| 释义 | > as lemmasgreen peach Either of two types of rock found in tin mines, one predominantly chlorite (also green peach), the other (in full blue peach) a fine-grained, bluish-grey variety of tourmaline (see quots. 1877, 1920). ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > slate > others alum slate1675 peach1778 itacolumite1863 itabirite1868 1778 W. Pryce Mineralogia Cornubiensis 325 When a load is composed mostly of this sort of stone, it is called a peach. 1811 J. Pinkerton Petralogy I. 128 Chlorite..is the green talc of Born, and the Samnterde of old German writers, perhaps from its velvety appearance. To the Cornish miners..it is also known by the name of peach. 1877 Min. Mag. 1 75 The green peach of the Cornish tin mines is undoubtedly chlorite... Blue peach..is probably a bluish-gray variety of Tourmaline. 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 110 Blue peach, a slate-blue, very fine-grained schorl-rock. 1920 A. Holmes Nomencl. Petrol. 177 Peach, a local Cornish name for rocks produced by the alteration of the walls of tin-lodes, and consisting of quartz with chlorite or tourmaline. < as lemmas |
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