Question: What Does Gypsum Look Like?

What is gypsum used for?

Gypsum uses include: manufacture of wallboard, cement, plaster of Paris, soil conditioning, a hardening retarder in portland cement. Varieties of gypsum known as “satin spar” and “alabaster” are used for a variety of ornamental purposes; however, their low hardness limits their durability.

How is gypsum formed?

Gypsum. Massive gypsum rock forms within layers of sedimentary rock, typically found in thick beds or layers. It forms in lagoons where ocean waters high in calcium and sulfate content can slowly evaporate and be regularly replenished with new sources of water.

Is Gypsum harmful to humans?

Gypsum products are not classified as dangerous according to CHIP. There are no long term adverse medical effects from ingestion of gypsum. If ingested, wash out the mouth and drink plenty of water. Plaster powders/dust potentially may irritate eyes or sensitive skin or irritate the respiratory system.

What is the crystal shape of gypsum?

Gypsum
Color Colorless (in transmitted light) to white; often tinged other hues due to impurities; may be yellow, tan, blue, pink, dark brown, reddish brown or gray due to impurities
Crystal habit Massive, flat. Elongated and generally prismatic crystals
Twinning Very common on {110}

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