Minerals ~ Pyrite
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Pyrite cubic crystals on marlstone, from Navajún, Rioja, Spain. Size: 95 mm x 78 mm.
Main crystal: 31 mm on edge. Weight: 512 g.

Photo Credit:  CarlesMillan

The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2. This mineral's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.

Pyrite is the most common of the sulfide minerals. The name pyrite is derived from the Greek πυρίτης (pyritēs), "of fire" or "in fire", in turn from πύρ (pyr), "fire". In ancient Roman times, this name was applied to several types of stone that would create sparks when struck against steel; Pliny the Elder described one of them as being brassy, almost certainly a reference to what we now call pyrite. By Georgius Agricola's time, c. 1550, the term had become a generic term for all of the sulfide minerals.

Pyrite is usually found associated with other sulfides or oxides in quartz veins, sedimentary rock, and metamorphic rock, as well as in coal beds and as a replacement mineral in fossils. Despite being nicknamed fool's gold, pyrite is sometimes found in association with small quantities of gold. Gold and arsenic occur as a coupled substitution in the pyrite structure. In the Carlin–type gold deposits, arsenian pyrite contains up to 0.37 wt% gold.


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Specimens in Mini Boxes

These specimens are mounted in plastic display boxes that measure 2 1/4" x 1 3/4" x 1" deep. Click on the image to see the full listing of available specimens

Price: Marked under Specimens


Each specimen is unique so availability is by image of the piece you select. Orders are taken on a first come basis. We have many more in this size range that are not mounted. Those will be in a separate listing

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Mineral & Gemstone Chips in Mini Bottles

These little bottles contain top quality mineral and gemstone chips from our tailings. We high grade the material. Click on the image to see the full listing of available specimens

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Mini bottles are created from left over chips from processing other mineral and gemstone specimens. We high grade the material so it is only available in limited quantities as we have available. In future we may seek to crush some material if there is sufficient interest in our bottles to warrant it.

Pyrite from Ampliación a Victoria Mine, Navajún, La Rioja, Spain.
Photo Credit:  JJ Harrison



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