Which mineral is commonly used in the manufacturing of glass?

Quartz is commonly used in the manufacturing of glass due to its high silica content. Silica, predominantly found in quartz, serves as the main ingredient in the glass-making process. When quartz is heated to high temperatures, it melts and can be shaped into various forms, making it ideal for producing different types of glass. Its durability and ability to withstand high temperatures also contribute to the quality of the glass produced.

While feldspar is also present in some glass formulations, it primarily serves as a flux that lowers the melting point of the mixture rather than being the main component for the structure of glass. Calcite and gypsum do not play significant roles in glass production, as calcite mainly serves in industries like cement and lime, while gypsum is used primarily in drywall and plaster products. Therefore, quartz stands out as the key mineral due to its properties and composition essential for creating glass.