Schmiederite
0398 Schmeiderite, Chenite, Meadowfoot Smelter (slag locality), Wanlockhead, Dumfries & Galloway (Dumfries-shire), Scotland
The needles are schmeiderite, the tabular crystals are chenite. Overall specimen measures 1.3 cm. x 1.3 cm. Mounted on pedestal in two piece opague plastic micromount display case.