MOTTRAMITE PbCuVO4OH (orthorhombic) . Crystals variable in form , usually pyramidal , prismatic or tabular , plumose aggregates , stalactatic,botryoidal. Tsumeb , Namibia . 本礦呈草綠色葡萄狀，硬度 3~3.5，以次生礦形成於礦脈經過氧化的地帶， 常見與 DESCLOZITE,VANADINITE,PYROMORPHITE,MIMETITE等知名礦為伍．
礦名來源：源自於產地 Mottram, St. Andrews, Cheshire, England.

經典名礦欣賞．２
NO.509