Description: Centennial Eureka Mine (Blue Rock), Tintic District, East Tintic Mts, Juab Co., Utah, USA Clinoclase (dark blue) with cornwallite (blue green spheres) on quartz. FOV = 3mm Nikon D300 on PB6 bellows with 4X Nikon finite conjugate objective. 46 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 ...

All pictures, text, design © Forum FMF 2006-2024