Plan you week with the help of our 10-day weather forecasts and weekend weather predictions for Seward, AK
A mineral is a naturally occurring chemical compound, usually of crystalline form and abiogenic in origin (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.
An alkaline earth element (atomic number 12; atomic weight 24.3) which is an essential mineral required for bone and tooth formation, nerve conduction and muscle contraction; it is required by many enzymes involved in carbohydrate, protein and nucleic acid metabolism.