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3.1" Cubic Pyrite in Manganoan Calcite - Peru
This is a pyrite cube in manganoan calcite from the Pachapaqui, Peru. The cube is 1.0" wide, and is accompanied by hundreds of micro-pyrite crystals that are scattered throughout the calcite. The calcite of this specimen fluoresces a beautiful red-orange when under long/short-wave UV.
About Pyrite
Pyrite, or iron pyrite, is best known as “Fool’s Gold” thanks to its bright metallic luster and pale brass-yellow color, which can easily be mistaken for real gold in poor lighting. With the chemical formula FeS₂, pyrite is the most abundant sulfide mineral on Earth and forms in an impressive range of geological environments.
One of pyrite’s defining features is its remarkable diversity of crystal habits—over 20 documented forms—making it one of the most morphologically varied minerals known. It commonly occurs as sharp cubes, octahedra, and pyritohedra, but also forms pentagonal dodecahedra, penetration twins, striated combinations, and complex modified forms prized by collectors. It can develop as massive veins, nodules, botryoidal growths, and fine druzy coatings that shimmer brilliantly under light. Whether glittering in tiny clusters or displayed as perfectly geometric crystals, pyrite showcases an extraordinary range of natural architecture and visual appeal.
Pyrite, or iron pyrite, is best known as “Fool’s Gold” thanks to its bright metallic luster and pale brass-yellow color, which can easily be mistaken for real gold in poor lighting. With the chemical formula FeS₂, pyrite is the most abundant sulfide mineral on Earth and forms in an impressive range of geological environments.
One of pyrite’s defining features is its remarkable diversity of crystal habits—over 20 documented forms—making it one of the most morphologically varied minerals known. It commonly occurs as sharp cubes, octahedra, and pyritohedra, but also forms pentagonal dodecahedra, penetration twins, striated combinations, and complex modified forms prized by collectors. It can develop as massive veins, nodules, botryoidal growths, and fine druzy coatings that shimmer brilliantly under light. Whether glittering in tiny clusters or displayed as perfectly geometric crystals, pyrite showcases an extraordinary range of natural architecture and visual appeal.
SPECIES
Pyrite & Calcite var. Manganoan
LOCATION
Pachapaqui, Peru
SIZE
3.1" Wide, Largest Cube 1.0"
CATEGORY
SUB CATEGORY
ITEM
#46097
