Introduction
Pyrite has been known since antiquity and is also known as "fool's gold." Pyrite gets its name from the Greek word pyr, which means "fire," since it produces sparks when struck by iron. Pyrite nodules have been discovered in prehistoric burial mounds; pyrite's sunlike hue likely ensured its worth. Mirrors were made later by putting polished slices of its crystals edge to edge on a hardwood backing. Pyrite is now polished into beads, and its brilliant crystals are set as gemstones.
Specification
|
Specification of Pyrite |
|
|
Chemical name |
Iron Disulphide |
|
Formula |
FeS2 |
|
Colors |
Pale brass-yellow |
|
Structure |
Cubic |
|
Hardness |
6–6.5 |
|
SG |
5.0–5.2 |
|
Luster |
metallic |
|
Streak |
Greenish black to brownish-black |
Pyrite can be found in a variety of settings, including sedimentary, igneous, metamorphic, and hydrothermal veins.
Uses
The uses of pyrite are declining. The main uses
today include:
- Sulfur dioxide production for the paper sector
- Production of sulphuric acid for the fertilizer and chemistry industries.
- Pyrite is commonly mined for the gold, copper, and other elements that it contains.
- Native Americans used to polish pyrite and use it as mirrors in the past. Stone with a decorative appearance.
- Stone of the collector.
Spanish pyrite | Rough | The source of this specimen—Almira, Spain—is famous for
its abundance of pyrite. These well-formed cubes are in a lime-rich mudstone
matrix.
Pyrite crystal | Rough | This dazzling, neatly cuboid pyrite crystal offers a
good demonstration of how the mineral can form in its natural state
Modified
crystals | Rough | The pyrite crystals in
this excellent specimen have developed into the form of cubes modified by
octahedrons.
Pyrite necklace | Set | The spherical beads of this necklace are made of highly
polished pyrite, finely crafted even though pyrite is brittle and difficult to
work with.
Pyrite and
quartz | Rough | In this classic pyrite
specimen, prismatic quartz crystals are growing on octahedral crystals of
pyrite. The two often grow together.
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