Cobble Creek: Pyrite Cubes from Navajún, La Rioja, Spain

Cobble Creek: Pyrite Cubes from Navajún, La Rioja, Spain


This listing is for one pyrite cube from Spain. These are definitely one of my favorite items. To think that they occur naturally in this shape is amazing. These are from the world famous locale, Navajún, La Rioja, Spain. May have some very small imperfections due to the nature of these cubes, but overall they are in great shape!

Tiny: 3 - 4 grams / 8-9 mm
Extra-Small: 4 - 6 grams / 9-10 mm
Small: 6 - 8 grams / 10-11 mm
Medium: 8 - 10 grams / 11-12 mm
Large: 10 - 12 grams / 12 - 13 mm
X-Large: 12 - 14 grams / 13 - 14 mm

Country of Origin: Ampliación Mine Victoria,
Navajún, La Rioja, Spain


We also sell Pyrite cubes in the rough by the 1/4lb :
https://etsy.me/2EEhUV7


From wikipedia:
https://en.wikipedia.org/wiki/Pyrite

"Fool's Gold" redirects here. For other uses, see Fool's Gold (disambiguation).
This article is about iron pyrite. For other pyrite minerals, see Pyrite group.

The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2 (iron(II) disulfide). Pyrite is considered the most common of the sulfide minerals.

Pyrite'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.[5][6]

The name pyrite is derived from the Greek πυρίτης (pyritēs), "of fire" or "in fire",[7] in turn from πύρ (pyr), "fire".[8] 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.[9]

By Georgius Agricola's time, c. 1550, the term had become a generic term for all of the sulfide minerals.[10]


Pyrite under normal and polarized light
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, but has also been identified in the sclerites of scaly-foot gastropods.[11] 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% gold by weight.[12]