Yellow johannite on green unknown (more crystalline and bright fluorescence), and blue chalcanthite. Ex Al Wilkins. Width of view 6mm. Stack of 35 images.
Click on the image below for a higher resolution version.
Yellow johannite on green unknown (more crystalline and bright fluorescence), and blue chalcanthite. Ex Al Wilkins. Width of view 6mm. Stack of 35 images.
Click on the image below for a higher resolution version.