Gypsum

Gypsum is a very popular mineral composed of calcium sulfate. ^[1]

Gypsum: Quick Facts and Characteristics

Some quick facts for Gypsum:

• Transparency: Gypsum can be opaque, translucent or transparent.
• Crystallography: In terms of crystallography, gypsum is monoclinic.
• Luster: In terms of luster, gypsum can be pearly or vitreous (glassy).
• Streak: Gypsum streaks white.
• Hardness: Gypsum's hardness ranges from 1.5 to 2 on the Moh's scale.
• Specific Gravity: Gypsum's specific gravity ranges from 2.3 to 2.32.

Gypsum: Background and Summary

Gypsum is a soft, white or gray mineral that belongs to the sulfate mineral family. It is composed of calcium sulfate dihydrate (CaSO4·2H2O) and is commonly found in sedimentary rocks. Gypsum is often found in thick beds or layers, and its crystals are usually flat and elongated. It has a hardness of 2 on the Mohs scale and a specific gravity of 2.3. One of the unique properties of gypsum is that it loses water when heated, which makes it an excellent material for making plaster.

Gypsum has a wide range of uses, from construction to agriculture. In the construction industry, gypsum is used to make plaster, drywall, and cement. It is also used as a soil conditioner in agriculture, as it provides calcium and sulfur to the soil. In addition, gypsum is used in the manufacture of paper, paints, and textiles. It is also used in the food industry as a coagulant in the production of tofu and as a source of calcium.

To identify gypsum, one can look for its distinctive crystal shape and color. Gypsum crystals are usually flat and elongated, with a pearly or silky luster. The mineral is usually white or gray in color, but it can also be yellow, brown, or pink. Another way to identify gypsum is to test its hardness. Gypsum is a soft mineral that can be scratched with a fingernail.