Conichalcite

A variety of Adelite-descloizite Group

Rare
Conichalcite specimen - rock identification

What is Conichalcite?

Conichalcite is found intermingled in copper deposits and appears in areas where the ore has become oxidized. The name is derived from the Latin root words of "powder" and "copper," as it is forms as a powdery crust on copper ore. The brilliant green color makes it hard to pass and very easy to recognize!

Uses & Applications

Industrially, conichalcite has been used as an ore as it contains some copper, which has a wide variety of applications from wiring to radiation protection. Since it is soft, brittle, and typically found in small crystals, it is rarely used for jewelry. Specimens are sometimes also collected.

Healing Properties

Conichalcite is said to remove negative energy and allow positive energy to flow, for healing of the body, mind, and spirit. It is often used by beginners of meditation as it works on the Heart chakra to help the person to embrace love and allows for better focus and understanding of the mind. It can be held in the hand for heightened support during difficult changes and transitions throughout life.

Conichalcite Market Value Calculator

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Conichalcite Localities Map

See where Conichalcite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

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North ZoneCentral RidgeSouth Basin

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Associated Chakras

Heart
Heart

Key Characteristics

Formation of Conichalcite

Conichalcite forms in the oxidation zones of copper orebodies. Here groundwater enriched with oxygen react with copper sulfide and copper oxide to produce an array of minerals such as malachite, azurite and linarite. Conichalcite is often found encrusted on to limonitic rocks that have yellow to red colors. Conichalcite will also form a solid solution series with the mineral calciovolborthite. When these two minerals form a solid solution series, the two interchanging elements are arsenic and vanadium. Conichalcite is the arsenic rich end member of the series and calciovolborthite is the vanadium rich end member. Notable occurrences of conichalcite include Juab Co., Utah; Lincoln and Lyon counties of Nevada and Bisbee, Arizona, in the US; Durango, Mexico; Collahuasi, Tarapaca, Chile; Calstock, Cornwall and Caldbeck Fells, Cumbria, England; Andalusia, Spain; and Tsumeb, Namibia.

Health & Safety Information

  • ⚠️Harm Reason: Conichalcite dust is toxic because it contains heavy metals Arsenic, Copper.
  • ⚠️Heavy Metal: Arsenic, Copper
  • ⚠️How to prevent the risks of Conichalcite?

More Images

Conichalcite specimen 2
© Robert M. Lavinsky

Quick Facts

Physical Properties

Color
Green, yellow-green, greenish yellow, light green to yellowish green in transmitted light
Hardness (Mohs)
4.5
Density
4.29 g/cm³
Streak
Light green
Luster
Greasy, Dull, Sub-vitreous
Crystal System
Orthorhombic

Chemical Properties

Chemical Formula
CaCu(AsO4)(OH)
Elements
As, Ca, Cu, H, O

Also Known As

ConichalciteStaszicite
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