Minerals
A mineral is a naturally occurring chemical compound usually of crystalline form and not produced by life processes. A mineral has one specific chemical composition, whereas a rock can be an aggregate of different minerals or mineraloids. The study of minerals is called mineralogy. To meet the definition of “mineral” used by most geologists, a substance must meet five requirements:
Sepiolite
Sepiolite, also known as meerschaum, is a clay mineral that belongs to the group of phyllosilicates. It is named after the Greek word "sepion,"...