Where is Unakite, Chrysocolla found?
Unakite (Epidote-Feldspar rock), Chrysocolla
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Open the appUnakite, Chrysocolla 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 Unakite, Chrysocolla
Unakite: Unaka Mountains, North Carolina, USA
The type locality for Unakite, where it was first discovered and named.
Unakite: Virginia, USA
Found in various locations, often as river-worn pebbles and boulders.
Unakite: South Africa
Significant deposits are found, often used for ornamental purposes.
Unakite: China
Known for commercial production of Unakite for carving and jewelry.
Chrysocolla: Arizona, USA
Major deposits, particularly in copper mining districts like Morenci and Bisbee.
Chrysocolla: Chile
Abundant in the extensive copper deposits of the Atacama Desert region.
Chrysocolla: Peru
Found in various copper mines, often associated with other secondary copper minerals.
Chrysocolla: Democratic Republic of Congo
Significant occurrences in the copper belt region.
Collecting tips
- Unakite Identification. Look for the characteristic mottled pink and green coloration. It is often found in stream beds and glacial till as rounded pebbles and cobbles due to its durability.
- Chrysocolla Identification. Search for vibrant blue to blue-green masses, often botryoidal or encrusting, in the weathered zones of copper deposits. Its relatively low hardness and lack of cleavage are key identifiers.
- Geological Context for Unakite. Focus on areas with known granitic intrusions that have undergone regional or hydrothermal metamorphism. Riverbeds draining such areas are good places to find eroded specimens.
- Geological Context for Chrysocolla. Explore the gossan (iron-rich cap) and oxidation zones of copper sulfide ore bodies. It often forms as a coating or filling fractures in other rocks.
- Safety Precautions. When collecting in mining areas, be aware of unstable ground, old mine workings, and potential exposure to other minerals that may be hazardous. Always wear appropriate personal protective equipment (PPE).
Quick Check
- Color:
- Unakite: Pink, green, sometimes clear/gray. Chrysocolla: Blue, blue-green, green.
- Luster:
- Unakite: Vitreous to greasy. Chrysocolla: Vitreous to dull, waxy, earthy.
- Streak:
- Unakite: White (feldspar, quartz), grayish-white (epidote). Chrysocolla: White to pale blue-green.
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