Unidentified white hemispheres that have grown in a thin space in slag. They look zoned, with the outermost part having a silky lustre. Note also some complete balls in gas cavity upper left. Width of view 5.75mm. Stack of 20 images. Slags here have lots of Pb, Fe, Zn, Mn,...
Collected on the upper dump by Bernie Day. Olive-green unknown (Fe phosphate?) and grey variscite (upper right) on green chalcosiderite. Ex Bernie Day Collection. Width of view 11.5mm. Stack of 44 images. Click on the image below for a higher resolution version.
Sharp prismatic green crystals with quartz, dark green chlorite, and unknown pink balls. Height of view 5mm. Stack of 60 images. Locality not specifically in Mindat. Maltatal is a river north of Malta.
Grey complex dolomite crystals with a single brownish cerussite crystal from the Kintore open cut, Broken Hill. In addition, there are tufts of an unknown white mineral. Candidates could be sepiolite (not recorded at Broken Hill) or palygorskite (recorded, but as a different habit, and rare). Maybe something else. It...
Ex Jim Ferraiolo. Under magnification, you can see pink hemispheres of an unidentified mineral.
Colourless stilbite crystals on black bitumen. Laumontite intermingled with bitumen. Apophyllite (in second photo) and unknown hexagonal or pseudohexagonal (in main photo) crystals in another cavity. Maybe just apophyllite? Photo width 3.25mm. The calcite is fluorescent.
