cerussiitti

Cerussiitti is a mineral composed of lead carbonate, with the chemical formula PbCO3. It is known for its vibrant colors, often appearing as white, gray, or colorless, but can also exhibit yellow, green, or blue hues due to impurities. Cerussiitti typically forms in the oxidized zones of lead deposits. It is a secondary mineral, meaning it forms as a result of the weathering and alteration of primary lead minerals such as galena.

The crystal structure of cerussiitti is orthorhombic. It is found in various forms, including prismatic crystals, granular aggregates, and botryoidal masses. Cerussiitti has a relatively high specific gravity and is moderately hard, with a Mohs hardness of 3 to 3.5. It is insoluble in water but will react with acids, effervescing in dilute nitric acid.

Historically, cerussiitti has been recognized as an ore of lead, although its brittleness and relatively small deposits make it less commercially significant than galena. It is also collected by mineral enthusiasts due to its attractive crystalline forms and colors. The name "cerussiitti" is derived from the Latin word "cerussa," meaning white lead, referring to its composition and appearance. Notable occurrences of cerussiitti are found in various locations worldwide, including the United States, Australia, and Namibia.