This specimen features prismatic dawsonite crystals, longitudinally striated and accompanied by many peach coloured radial celestine crystals, a few quartz prisms, and some micro-marcasite. Dawsonite, named after John William Dawson, a Canadian geologist and former Principal of McGill University, is an uncommon mineral. In its Canadian locality, dawsonite is often found as a coating on vug walls and fractures in hydrothermally altered feldspathic dikes and hornfels. These are exceptionally big and gemmy crystals for the species, an excellent specimen. This particular specimen was collected by Dr. Tarassoff in 1976, and was was featured in the Mineralogical Record Vol. 37, Iss. 1 (Figure 39)
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