Description: Centennial Eureka Mine (Blue Rock), Tintic District, East Tintic Mts, Juab Co., Utah, USA Tyrolite (blue green) and bariopharmacosiderite (brown) FOV = 3mm Nikon D300 on PB6 bellows with 4X Nikon finite conjugate objective. 90 frames at .02mm steps, stacked with Zerene Stacker. One of 16 Centennial Eureka specimens collected and donated by John Dagenais for the 2010 Pacific Northwest Friends of Mineralogy Symposium live auction.

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