Where is Chrysocolla with Limonite found?
Hydrated copper phyllosilicate with iron oxyhydroxide
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Open the appChrysocolla with Limonite 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 Limonite
Southwestern United States (Arizona, New Mexico)
Major copper mining districts, particularly porphyry copper deposits, are prolific sources. Examples include the Morenci Mine (Arizona) and the Ray Mine (Arizona).
Chile
Large copper deposits like Chuquicamata and El Teniente produce significant quantities of chrysocolla, often associated with limonite.
Peru
Various copper mines, such as those in the Cerro de Pasco region, yield chrysocolla with limonite.
Democratic Republic of Congo
The Copperbelt region is known for its rich secondary copper mineralization, including chrysocolla and limonite.
Russia (Ural Mountains)
Historical and active copper mining areas.
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 sulfide-rich ore bodies. These zones are typically stained with green, blue, and brown minerals.
- Identify Associated Minerals. Chrysocolla with Limonite often occurs with malachite, azurite, cuprite, native copper, and various iron oxides. The presence of these minerals can indicate a promising area.
- Observe Color and Texture. Look for distinctive blue-green colors of chrysocolla intergrown with earthy yellow, orange, or brown limonite. Botryoidal or mammillary textures are common for both minerals.
- Check for Hardness. Chrysocolla is relatively soft (2.5-3.5 on Mohs scale), and limonite is also soft (4-5.5, but often appears softer due to its earthy nature). A steel knife can scratch both.
Quick Check
- Color:
- Blue, blue-green, green (chrysocolla) intergrown with yellow, orange, brown, reddish-brown (limonite).
- Luster:
- Vitreous to waxy to earthy (chrysocolla); earthy to dull (limonite).
- Streak:
- White to pale blue-green (chrysocolla); yellowish-brown (limonite). The aggregate streak will be a mix or dominated by the more abundant component.
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