单词	amphibole group
释义	amphibole group noun : a group of minerals (as anthophyllite, tremolite, actinolite, and hornblende) with essentially like crystal structures involving a silicate chain [OH(Si4O11)]n and generally containing three groups of metal ions, the large ions being sodium and calcium, the intermediate being chiefly bivalent iron, magnesium, and manganese, and the small ions chiefly silicon with some aluminum and rarely ferric iron, the general formula for the group being A2B5(Si, Al)8O22(OH) 2 Word History First Known Use 1828, in the meaning defined above
随便看	swallowers swallowing swallowlike swallowling swallows swallowtail swallowtails swallowwort swallowworts swam swami swamies swamis swamp swamp angel swamp apple swamp ash swamp azalea swamp bay swamp beggar-ticks swamp birch swamp black gum swamp blackberry swamp blackbird swamp blueberry

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