“Reflected light digital image from transparency. Oil immersion. Crossed polars. This illustrates the rotation tints of buckhornite laths in shades of deep violet to pale blue in a matrix of aikinite (mostly green rotation tints). Specimen: E.1102, BM 1991,52 holotype An image similar to this one was used on the cover of the 1998 Mineralogical Association of Canada Short Course Notes Volume 27 Modern Approaches to Ore and Environmental Mineralogy Editors L J Cabri and D J Vaughan ISBN 092129400X, 9780921294009”