description Chrysocolla Overview
Chrysocolla is a blue, green, or blue-green hydrous copper silicate that forms as a secondary mineral in the leached and oxidized zones of copper deposits. It is commonly amorphous or cryptocrystalline rather than present as well-formed crystals, and it may occur as coatings, vein fillings, botryoidal masses, or mixtures with minerals such as malachite, azurite, quartz, and limonite. Its color and relatively soft, often porous material make it a familiar specimen for mineral collectors and a lapidary stone when suitably compact, as described by the [Oregon Department of Geology](https://pubs.oregon.gov/dogami/B/B-016.pdf).
help Chrysocolla FAQ
What is chrysocolla made of?
Chrysocolla is a hydrous copper silicate. Its blue, green, or blue-green colors come from its copper-rich mineral composition.
Where does chrysocolla form?
It forms in the leached and oxidized zones of copper deposits. It commonly appears as coatings, veins, or other secondary mineral growth rather than large, sharply formed crystals.
Does chrysocolla form crystals?
Chrysocolla is commonly amorphous or cryptocrystalline, so well-formed crystals are uncommon. The material often occurs as coatings or vein fillings in oxidized copper deposits.
What colors can chrysocolla be?
Chrysocolla may be blue, green, or blue-green. The color and pattern can vary depending on its mineral setting and associated copper minerals.
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