Kingsbury reference. Kingsbury & Hartley (1957): "thin, fibrous-radiating aggregates in joints in white vein-quartz, specimens collected being derived almost certainly from the Emerson vein of the Carrock Wolfram Mine. In contrast to its more usual deep straw- or wax-yellow colour, the Grains Gill mineral is of a pale, almost cream yellow, and until the quartz is broken appears merely as a faint yellowish staining."