Kaolinite crystals

Since the earliest times, humankind has had a close association with clay. From use as a building material, in pottery, for treating human digestive ailments to...

In this activity, students investigate crystal shapes and crystal systems. Traditional ceramics are clay-based – clays have a mineral composition and minerals have a crystalline structure....

Since the earliest times, humankind has had a close association with clay. From use as a building material, in pottery, for treating human digestive ailments to...

A mineral is an element or chemical compound that is normally crystalline and that has been formed as a result of geological processes. Examples include quartz,...