20130 Niobium
Niobium metal. Width of view 4.5mm. Click on the image below for a higher resolution version.
Niobium metal. Width of view 4.5mm. Click on the image below for a higher resolution version.
1 gram of potassium metal 99.8% pure in glass vial under mineral oil. The mineral oil prevents but doesn’t entirely stop the oxidization of the potassium metal, hence the purple hue.
Iodine in sealed glass ampule. Paul van den Bergen photo. And thanks to Paul for creating this… 😁
Two watch hands coated with radium in phosphorescent paint. Luminous and highly fluorescent.
Have you been looking for a way to easily showcase your mineral collection? Either for public or private consumption? Get in touch if you are interested in hosting your collection as part of the growing...