PYRITE SUN

$85

PYRITE SUN
PYRITE SUN

PYRITE SUN

$85

PYRITE SUN

A stunning, large Pyrite Sun!  This piece is exactly what you want in a sun – near perfect shape and without chips or imperfections.  Beautiful striations radiate out from the centre.  Our Suns are hand selected at the source for their excellent quality.  We are well known for our metals range and have pyrite specimens showing cubic, orbicular and octahedral crystals, as well as these suns.  Pyrite (“fools gold”) is popular with all age groups.  A very collection-worthy piece, This Pyrite Sun comes with a perspex stand for display.

Dimensions:
9.1cm diameter, 143g.

Location:
Sparta, Illinois, USA.

PYRITE FeS2.

In stock

PYRITE SUNPYRITE SUN

A stunning, large Pyrite Sun!  This piece is exactly what you want in a sun – near perfect shape and without chips or imperfections.  Beautiful striations radiate out from the centre.  Our Suns are hand selected at the source for their excellent quality.  We are well known for our metals range and have pyrite specimens showing cubic, orbicular and octahedral crystals, as well as these suns.  Pyrite (“fools gold”) is popular with all age groups.  A very collection-worthy piece, This Pyrite Sun comes with a perspex stand for display.

Dimensions:
9.1cm diameter, 143g.

Location:
Sparta, Illinois, USA.

PYRITE FeS2.

One of the most unusual and striking varieties of pyrite are the disc-shaped pyrite “suns”, also known as pyrite dollars, which exhibit striations radiating out from the center like rays of the sun.  These unique specimens are recovered from underground coal mines near Sparta, Randolph County, Illinois USA.  They occur in narrow and compacted seams of slate imbedded in 300 million-year-old Pennsylvanian Period coal deposits.  The origin of pyrite suns has been a subject of speculation and debate.  While some authorities have speculated they originated as fossils that were subsequently replaced with pyrite, the current consensus is they are concretions spread out under pressure and forced to grow in a laterally compressed, radiating manner in the seams of slate.  AKA stuck between a rock and a hard place.

Pyrite is the classic “Fool’s Gold”.  There are other shiny brassy yellow minerals, but pyrite is by far the most common and the most often mistaken for gold.  Whether it is the golden look or something else, pyrite is a favorite among rock collectors.  It can have a beautiful luster and interesting crystals.  It is so common in the earth’s crust that it is found in almost every possible environment, hence it has a vast number of forms and varieties.

Bravoite is the name given to a nickel-rich iron sulfide.  It is closely related to pyrite but contains up to 20% nickel.  Some mineral books treat it as a variety of pyrite.

Pyrite is a polymorph of marcasite, which means that it has the same chemistry, FeS2, as marcasite;  but a different structure and therefore different symmetry and crystal shapes.  Pyrite is difficult to distinguish from marcasite when a lack of clear indicators exists.

STRUCTURE

Pyrite’s structure is analogous to galena’s structure with a formula of PbS.  Galena though has a higher symmetry.  The difference between the two structures is that the single sulfur of galena is replaced by a pair of sulfurs in pyrite.  The sulfur pair are covalently bonded together in essentially an elemental bond.  This pair disrupts the four fold symmetry that a single atom of sulfur would have preserved and thus gives pyrite a lower symmetry than galena.

Although pyrite is common and contains a high percentage of iron, it has never been used as a significant source of iron.  Iron oxides such as hematite and magnetite, are the primary iron ores.  Pyrite is not as economical as these ores possibly due to their tendency to form larger concentrations of more easily mined material.  Pyrite would be a potential source of iron if these ores should become scarce.

Pyrite has been mined for its sulfur content.  During WWII, sulfur was in demand as a strategic chemical and North American native sulfur mines were drying up.  A sulfide deposit near Ducktown Tenn. was found to be able to mine pyrite and other sulfides such as pyrrhotite and pentlandite which produce the needed sulfur as well as iron and other metals.  The sulfur was used in the production of sulfuric acid, an important chemical for industrial purposes.  Now most sulfur production comes from H2S gas recovered from natural gas wells.
Interestingly being aa form of Iron a magnet will not stick to it.

Weight 170 g
Dimensions 9 x 9 x 1 cm