Smithsonite
ZnCO₃
Tsumeb Mine, Tsumeb, Namibia
Ex. M. Sussman Collection

Bright green crystals of smithsonite covering one side of contrasting white matrix. Under magnification the crystals are seen to be rare pseudo-dodecahedral form - highly sought-after by collectors. 柔らかな緑色を帯びた菱亜鉛鉱の標本です。dealer氏によると結晶形がpseudo-dodecahedral form(擬似十二面体)をなしている珍しいものだそうです。