10050 Barite, Crich Quarry, Crich, Derbyshire, England

Large plate of cockscomb barite. Ex Gregory, Bottley and Lloyd. Similar to Mindat photo 260605. A specimen of baryte, bearing an old adhesive paper label reading: ‘Cockscomb Baryties, from Crich…’, in old white card tray, from the Gregory, Bottley, and Lloyd collection. James Reynolds Gregory (1832-1899) was one of the...

10033 Protochabourneite, Arsiccioite, Pyrite, Monte Arsiccio Mine, Sant’Anna di Stazzema, Stazzema, Apuan Alps, Lucca Province, Tuscany, Italy

Type Locality for both species. This relatively NEW SPECIES was approved in 2011 but has only recently reached the mineral market (October 2014). Protochabourneite occurs as black micro granular aggregates sparely scattered in quartz/pyrite matrix, a complex triclinic thallium-lead-antimony sulfosalt. Also present, minute deep red micro granules of arsiccioite.

10012 Quartz, Barite, Hungary

Quartz pseudomorph after barite. Ex Brother Juan Salvador, FMS, a volunteer at the AMNH in the 1880s. His card apparently read One of the great treasures of my collection, 16/7/1884. Ex American Museum of Natural History. Ex British Museum Collection, number 68. Ex Eugene Carmichael Collection, number 266. Specimen has...