Rock-forming Minerals

12 Most Common Minerals on Earth

The most common minerals on Earth encompass a wide variety of geological environments and include quartz , feldspar (both …

Sodalite: Royal Blue Gemstone

Sodalite (Na₈[Al₆Si₆O₂₄]Cl₂) is a feldspathoid mineral that crystallizes in silica-undersaturated igneous rocks—most notabl…

Olivine: Common Rock-Forming Mineral

Olivine is a silicate mineral composed of magnesium iron silicate and is a primary component of the Earth's mantle. Know…

Pyrite: Properties, Uses, Occurrence, Toxicity

Pyrite is a naturally occurring mineral composed of iron and sulfur, with the chemical formula FeS₂. It belongs to the sulfi…