Bluish-green platy crystals of chalcophyllite. Ex John Sobolewski. Width of view 5mm. Stack of 40 images. Click on the image below for a higher resolution version.
Type Locality for metaheinrichite. Ex John Sobolewski. Width of view 5mm. Stack of 30 images (white light), stack of 20 images (UV). Use the slider to see specimen under white light and longwave UV. Click on the image below for a higher resolution version.
Orange coffin-shaped heulandite crystals coating the inside of a vesicle in basalt, from a locality first discovered in the 1960s. Also present is rosettes of green chlorite. Ex John Sobolewski. Width of view 5mm. Stack of 30 images. Click on the image below for a higher resolution version.
Type Locality. Cubic crystal of boleite upon which plates of pseudoboleite have grown epitactically on the boleite cube faces. Ex Bernie Day specimen. Width of view 5mm. Stack of 30 images. Click on the image below for a higher resolution version.
Acquired from Mark Ascher 9/2007. Width of view 3.5mm. Stack of 50 images. Click on the image below for a higher resolution version.
Specimen acquired in the micromount room at the Tucson Show. Ex Bob Jenkins. Width of view 3.5mm. Stack of 30 images. Click on the image below for a higher resolution version.
Colourless analcime crystals on heulandite. Ex John Sobolewski. Width of view 3.5mm. Stack of 40 images. Click on the image below for a higher resolution version.
Silver in matrix slice, 67x45x7mm. Click on the image below for a higher resolution version.
Yellow pottsite and small areas of orange clinobisvanite. Specimen is 6mm wide. Type Locality for pottsite. Acquired from Jim Ferraiolo 6/2005. Click on the image below for a higher resolution version.
Interesting textures. Specimen is 34mm wide. Ex Bart Cannon. Click on the image below for a higher resolution version.
Labelled as boulangerite, El Sombrette Mine, Durango. Likely jamesonite, and from the Sombrerete Mine, in Zacatecas, but close to the border with Durango. Ex John Lewis Collection.
Purplish-grey vanadinite with yellow descloizite. A.O. stands for Al Ordway who found nice micro vanadinite and descloizite. Acquired from Al Wilkins. Width of view 3.5mm. Stack of 40 images. Click on the image below for a higher resolution version.
