Portal:Minerals/Did you know/15
Appearance
![Leonite perched on a matrix of halite](http://upload.wikimedia.org/wikipedia/commons/thumb/5/52/Leonite-Halite-112539.jpg/120px-Leonite-Halite-112539.jpg)
Leonite perched on a matrix of halite
- ... that leonite (pictured) has been found on Mars?
- ...that crystals of Paulingite, a rare zeolite mineral found in vesicles in the basaltic rocks from the Columbia River, form a perfect clear rhombic dodecahedron?
- ... that abernathyite is both fluorescent and radioactive and is named for the mine operator who discovered it?