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Chalcopyrite 4 Inch to 5 Inch 2-3 Lb
Chalcopyrite Specimens

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Sale Price: $32.99

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Mineral Description
healing crystals
Highest quality flashy chalcopyrite specimens imported by Kidz Rocks from Mexico.

These are dramatic and gorgeous specimens.

You will receive one specimen from the lot shown in the photos which is 4 inch to 5 inch and weighing between 2 pounds and 3 pounds. Some of these have gold patches as can be seen in the listing photos.

Bulk Purchase Specimen

You are buying one rock. You will receive one rock from the lot in the photographs. Photographing and listing every crystal separately adds a lot in labor costs. We pass that savings on to you with lower prices and higher quality than the competition.

Chalcopyrite is a common mineral and is found in almost all sulfide deposits. Fine crystals of chalcopyrite have a unique character and can add to anyone's collection. The name Chalcopyrite comes from the Greek word chalkos which means copper and the word pyrites which means to strike fire. Chalcopyrite (or copper pyrite), looks like, and is easily confused with Pyrite, FeS2.

Chalcopyrite is one of the minerals referred to as Fool's Gold because of its bright golden color. But real gold is a more buttery yellow and is ductile and malleable. Chalcopyrite is also often confused with pyrite, although the latter has a cubic and not a tetragonal crystal system. Further, chalcopyrite is often massive, rarely crystalline, and less brittle. Chalcopyrite is also a darker yellow in color, with a greenish tinge and diagnostic greasy luster.

Due to its color and high copper content, chalcopyrite has often been referred to as yellow copper. It is believed the Egyptians (as early as 3900 B.C.E.) were the first people to create bronze, a mixture of copper and tin. This marked the beginning of the Bronze Age.


Peacock ore, or Chalcopyrite, pronounced kal-co-pie-right (kal as in "calendar", "co" as in coat), is a copper iron sulfide mineral that crystallizes in the tetragonal system. The name "Chalcopyrite" is derived from the Greek words chalkos, "copper" and pyrites, "strike fire". It is normally brass yellow but may have a purplish blue tarnish. The tarnish can produce a colorful, metallic iridescence and as a result it is often called "peacock ore."

Chalcopyrite is opaque and can be treated with acid to produce a greater tarnish. Chalcopyrite is present in volcanogenic massive sulfide ore deposits and sedimentary exhalative deposits, formed by deposition of copper during hydrothermal circulation. It is concentrated in this environment via fluid transport. Chalcopyrite is the most important copper ore, and it occurs in a variety of ore types, from huge masses as at Timmins, Ontario, to irregular veins and disseminations associated with granitic to dioritic intrusives as in the porphyry copper deposits of Broken Hill, the American cordillera and the Andes. Chalcopyrite is present in the supergiant Olympic Dam Cu-Au-U deposit in South Australia. It may also be found in coal seams associated with pyrite nodules, and as disseminations in carbonate sedimentary rocks.


Color: Brassy yellow, tarnishes to iridescent blues, greens, yellows and purples.

Luster: Metallic

Transparency: Crystals are opaque.

Crystal System: Tetragonal; bar 4 2m

Crystal Habits: Predominantly the disphenoid which is like two opposing wedges and resembles a tetrahedron. Crystals sometimes twinned. Also commonly massive, and sometimes botroyoidal.

Cleavage: Rather poor in one direction.

Fracture: Conchoidal and brittle.

Hardness: 3.5 - 4

Specific Gravity: Approximately 4.2 (average for metallic minerals)

Streak: Dark green.

Other Characteristics: Some striations on most crystal faces.

Associated Minerals: Quartz, fluorite, barite, dolomite, calcite, pentlandite, pyrite and other sulfides.

Best Field Indicators: Crystal habit, tarnish, softness and brittleness.

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Bulk 4" - 8" Specimens