Cobble Creek: Pyrite Cluster from Peru
Amazing Pyrite cluster from Peru up for grabs. Trying to get the true beauty of this cluster in a photo is impossible. I love holding this piece. This is a larger sized plate that would look great in your display cabinet.
Length: 112 mm / 4.4" inches
Width: 61 mm / 2.4" inches
Height: 30mm / 1.1" inches
Location: Huanzala Mine, Huallanca, Huallanca District, Bolognesi Province, Áncash, Peru
Weight: 404 grams / 14.2 ounces
The one in the photo is the one you will receive.
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.
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 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. 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.
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