SMITHSONITE ZnCO3 (trigonal) . nearly transparent rounded rhombohedrons crystals . Tsumeb, Namibia . 菱鋅礦晶体多作細小菱形，表面彎曲．亦作葡萄狀－botryoidal，鐘乳狀，結殼狀． 含少量銅 或鎳者則呈藍或綠色，粉紅色或紫色者則含鈷或錳．含少量的鎘則呈少見的黃色．在乾燥地區常由閃鋅礦風化而成．粉紅色的結晶大都出自於 Tsumeb, Namibia ．而 Kelly Mine, Magdalena, New Mexico 產出最佳品質藍綠色葡萄狀晶體．

礦名來源：Named for James Smithson, the founder of the Smithsonian Institution

經典名礦欣賞 ．２．３．４．５
NO.647