Where is Chrysocolla with Malachite found?
Chrysocolla (CuSiO3·nH2O) and Malachite (Cu2(CO3)(OH)2)
Got a photo? Identify rocks instantly with the Rockby app
Open the appChrysocolla with Malachite occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Chrysocolla with Malachite
Democratic Republic of Congo (DRC)
Known for producing high-quality malachite, often intergrown with chrysocolla and other copper minerals.
Arizona, USA
Significant deposits of chrysocolla and malachite, particularly from copper mines in areas like Morenci, Bisbee, and Globe.
Chile
Major copper-producing country with numerous occurrences of secondary copper minerals, including chrysocolla and malachite.
Russia (Ural Mountains)
Historically famous for malachite, often found with chrysocolla.
Australia
Various copper deposits yield chrysocolla and malachite, particularly in Queensland and South Australia.
Israel (Timna Valley)
Source of 'Eilat Stone,' which is a mixture of chrysocolla, malachite, azurite, and turquoise.
Collecting tips
- Look for Copper Deposits. Focus your search on areas known for copper mineralization, especially the oxidized caps of porphyry copper deposits or other hydrothermal copper veins.
- Identify Associated Minerals. Chrysocolla and malachite often occur with other secondary copper minerals such as azurite, cuprite, native copper, and iron oxides (goethite, limonite), which can serve as indicators.
- Observe Color and Luster. The distinctive blue-green to green colors and varied lusters (waxy, vitreous, silky, dull) are key visual identifiers. Look for the characteristic banding of malachite and the often smoother, more uniform appearance of chrysocolla.
- Check for Acid Reaction (Malachite). Malachite will effervesce (fizz) when a drop of dilute hydrochloric acid is applied, due to its carbonate content. Chrysocolla will not react with dilute HCl. This is a crucial differentiating test.
- Consider Hardness. Chrysocolla (2.5-3.5) is generally softer than malachite (3.5-4), though both are relatively soft minerals. A scratch test can help distinguish them if they are in separate, pure masses.
Quick Check
- Color:
- Blue to blue-green (chrysocolla) and green (malachite), often intergrown.
- Luster:
- Waxy to vitreous to dull (chrysocolla); silky to dull (malachite).
- Streak:
- White to light blue-green (chrysocolla); light green (malachite).
Explore Chrysocolla with Malachite
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.