The Sterling Hill Mining Museum in Ogdensburg, New Jersey, is a must-visit for anyone interested in fluorescent minerals. It is located near the town...
These two views of the same mineral, idrialite, demonstrate how the complex formation of a mineral can have a strikingly different presentation, depending on...
By Jim Brace-Thompson
Silica dioxide (SiO2)
Quartz, or silica dioxide (SiO2), is a common mineral beloved by crystal collectors of all stripes. No collection is complete...