Pyrite
Pyrite is a sulfide mineral known for its striking metallic crystals, with several world-class Chinese localities.
About Pyrite
Pyrite is a sulfide mineral in the pyrite group and has the chemical formula FeS₂. It crystallizes in the isometric system and has a distinctive metallic presence in any collection. Its combination of structural character and global distribution make it a recognized species in both systematic and aesthetic collections.
Identification & care
Specimens usually show cubic, octahedral, pyritohedral; striated cube faces; massive, nodular. Its color is typically pale brass-yellow. The luster is metallic, the streak is greenish-black to brownish-black, and specimens are typically opaque. The cleavage is poor/indistinct on {001}. The fracture is irregular/uneven, conchoidal, which aids identification.
Collector context
How it forms
In terms of geology, Pyrite forms in hydrothermal veins, sedimentary (diagenetic), metamorphic, magmatic. It is commonly found in association with galena, sphalerite, chalcopyrite, quartz, calcite.
Classic Chinese localities
Pyrite also appears as a secondary or late-stage occurrence at 1 additional Chinese localities.
Why collectors care
Pyrite is among the most visually dramatic sulfides and native metals a collector can own. Bright metallic faces, sharp crystal geometry, and good matrix contrast make a single well-selected piece carry an entire cabinet; luster integrity and termination sharpness ultimately define its collector value.
What affects value
Value in Pyrite is assessed, in typical order of weight, against: (1) locality provenance; (2) crystal size; (3) termination quality and crystal completeness; (4) metallic luster integrity (absence of tarnish); (5) crystal habit elegance (parallel, radiating, or bladed); (6) matrix contrast and aesthetic balance; (7) condition and absence of re-attached crystals. Verified locality documentation and absence of cleaning residue act as strong multipliers across the above.
Naming history
The name Pyrite has a specific etymological and historical context — see Mindat's reference entry for provenance details. We have retained naming data at the record level; published prose is paraphrased from factual fields rather than copied from source.
Available Pyrite specimens
Crystal and Pyrite Geode, Yaogangxian Mine, China
Pyrite and Calcite Crystal Cluster, Daye, Hubei, China
Pyrite Cubic Crystal with Columnar Form, Spain
Columnar Pyrite Crystal, Navajún, Spain
Chalcopyrite and Pyrite Cluster, Hunan
Pyrite with Chalcopyrite, Hubei
Pyrite, Quartz and Fluorite Crystal – Fujian, China
Pyrite on Dolomite Matrix – Hunan, China
Chalcopyrite and Iron Ore Specimen Set – Yaogangxian
Pyrite Cluster – Raw Cubic Crystals on Matrix – Spain
Pyrite and Quartz Cluster – Golden Cubic Crystals – Spain
Cubic Pyrite Cluster – Mirror Faces – Navajún, La Rioja, Spain
Cubic Pyrite Cluster – Navajún, La Rioja, Spain
Pyrite Crystal – Druzy Form – Daye Mine, Huangshi, Hubei
