description Rosasite Overview
Rosasite is a secondary copper-zinc carbonate hydroxide mineral with the approximate formula (Cu,Zn)2CO3(OH)2. It commonly forms blue, blue-green, or green botryoidal, mammillary, or fibrous crusts in the oxidized zones of copper and zinc deposits. First described from the Rosas Mine near Narcao in Sardinia, Italy, it is chiefly collected as a mineral specimen and is also studied as part of the alteration mineralogy of base-metal deposits.
help Rosasite FAQ
What is rosasite?
Rosasite is a secondary copper-zinc carbonate hydroxide mineral with the approximate formula (Cu,Zn)2CO3(OH)2. It forms during the weathering of copper and zinc deposits.
What color is rosasite?
Rosasite commonly appears blue, blue-green, or green. It often forms botryoidal, mammillary, or fibrous crusts rather than large transparent crystals.
Where does rosasite form?
Rosasite forms in the oxidized zones of copper and zinc deposits. It was first described from the Rosas mine, which gave the mineral its name.
Is rosasite a common jewelry gemstone?
No. Rosasite is mainly collected as a mineral specimen because it is usually found as a crust or aggregate. Its blue-green color makes it attractive to collectors.
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