Mineral composition refers to the specific types and amounts of minerals present in a rock or soil. Minerals are naturally occurring, inorganic substances with a defined chemical structure. Common minerals include quartz, feldspar, and mica, each contributing to the overall characteristics of the material. Understanding mineral composition is essential in fields like geology and environmental science. It helps determine the rock's properties, such as hardness, color, and weathering resistance. Additionally, mineral composition can influence soil fertility and the availability of nutrients for plants, impacting ecosystems and agriculture.