Unnamed wash, adjacent to State Route 177, Superior area, Pinal County, Arizona, USA
White cowlesite from the type locality. Field of view is 1 cm across. P. Cristofono specimen and photo.
© 2008 Peter Cristofono
Size: 42mm x 20mm x 18mm Rounded “balls” of grey-white Cowlesite scattered over upper surface of specimen. Cowlesite is on a pale blue-grey material (possibly Chalcedony?) and the matrix consists of dull grey vesicular scoria.
© Keith F Compton
Matrix with an amygdale 7mm wide containing nice white grey/ white cowlesite micro crystalline 'balls'. Specimen size 0 50 x 35 x 20mm Specimen & photo - Trevor Boyd/ Causeway Minerals
© Trevor Boyd/ Causeway Minerals
White cowlesite spherule on matrix - FOV 5mm Photo - Trevor Boyd/ Causeway Minerals Specimen now in the collection of Ferdinando Giovine.
A piece of yellow/brown Jasper found in wash
Close up photo of Cowlesite (spherical crystals) and Mordenite (fibrous crystals) in situ. Specimen found in wash.
Small analcime crystal in matrix. Found in wash near S.R. 177
Spherical aggregate of white-cream cowlesite in basalt matrix. Collected by Mike Shannon, et al (see child photo). ID confirmed by Raman at University of Arizona. Purchased from Michael Cline in 2022.
Collection label for cowlesite specimen.