Pyrite Cubes in Shale Genuine Iron Sulphide Crystal Mineral with Certificate of Authenticity
£ 11.70
GENUINE PYRITE CUBES IN SHALE MINERAL SPECIMENThis genuine Pyrite Cubes in Shale specimen is a naturally formed mineral
display piece featuring sharply developed cubic pyrite crystals embedded within dark shale matrix. Carefully selected for its crystal definition, metallic lustre, and geological appeal, this specimen is ideal for mineral collections, geological displays, educational study, and natural history cabinets.The exact specimen shown in the photographs is the piece you will receive, allowing collectors and enthusiasts to closely examine the natural pyrite cube formations, shale textures, and overall mineral presentation before purchase. Every specimen includes a Certificate of Authenticity lifetime guarantee generic card confirming the authenticity of the mineral specimen.Please refer to the listing photographs for full sizing and scale details. PYRITE MINERAL COMPOSITION AND CRYSTAL STRUCTUREPyrite is an iron sulphide mineral with the chemical formula FeS₂ and belongs to the sulphide mineral group. It is one of the most recognisable metallic minerals in the world due to its bright brass-gold colouration and naturally geometric crystal formations.Commonly known as “Fool’s Gold” because of its metallic appearance, pyrite is highly valued by collectors for its crystal symmetry, reflective surfaces, and natural cubic crystal habit. Pyrite crystallises within the isometric crystal system and frequently forms cubes, pyritohedrons, octahedrons, and complex intergrown crystal structures.The pyrite cubes within this specimen display the mineral’s characteristic metallic lustre and sharply defined geometry. Depending on the formation conditions, the crystals may feature smooth reflective faces, fine striations, stepped growth patterns, or subtle tarnish caused by natural oxidation over time. SHALE MATRIX AND GEOLOGICAL CONTRASTThe pyrite crystals are naturally embedded within shale matrix, creating a visually striking contrast between the bright metallic cubes and the darker fine-grained sedimentary host rock. Shale is a sedimentary rock formed from compacted clay, silt, and fine mineral particles deposited in low-energy aquatic environments such as ancient seabeds, lagoons, and river basins.Pyrite commonly forms within shale through diagenetic and sedimentary mineralisation processes where iron and sulphur-rich conditions allow pyrite crystals to precipitate during sediment compaction and burial.The dark shale matrix enhances the visibility of the pyrite cubes while preserving the original geological context in which the crystals formed. Natural fractures, layering, matrix textures, and minor crystal contacts are authentic geological features formed during sediment deposition and mineral growth.Each specimen is completely unique, with variations in crystal size, cube arrangement, matrix colouration, and crystal exposure contributing to the individuality and collector value of the piece. GEOLOGICAL FORMATION AND SEDIMENTARY ENVIRONMENTPyrite cubes in shale form in oxygen-poor sedimentary environments rich in iron and sulphur compounds. As organic material decomposes within marine or sedimentary muds, chemical reactions create sulphide-rich conditions that allow pyrite to crystallise gradually over long geological timescales.The slow growth of pyrite within compacting sediment often produces exceptionally well-defined cubic crystals preserved within the surrounding shale. These formations provide important insights into ancient sedimentary environments and geochemical processes that occurred millions of years ago.Many pyrite-bearing shale deposits formed within prehistoric marine basins where layers of mud and organic material accumulated on ancient sea floors before undergoing lithification into sedimentary rock.The resulting specimens preserve both the crystal structure of the pyrite and the sedimentary textures of the host shale, making them highly desirable for collectors interested in mineralogy and sedimentary geology alike. IDEAL FOR MINERAL COLLECTIONS AND EDUCATIONAL DISPLAYSThis Pyrite Cubes in Shale specimen is ideal for:
• Mineral and crystal collections
• Geological and educational displays
• Sedimentary mineral collections
• Natural history cabinets
• Collector photography setups
• Decorative mineral displays
• Unique geology and mineral giftsIts metallic crystal habit and contrasting shale matrix make it an especially eye-catching specimen suitable for collectors of all experience levels.Pyrite has also historically been valued for its distinctive metallic appearance and crystallographic perfection, though today collector specimens are especially appreciated for their geological significance, natural crystal geometry, and striking visual contrast.Each specimen is individually chosen for quality, crystal visibility, and natural character, ensuring that every piece showcases authentic geological textures and mineral formations created naturally within the Earth over immense geological timescales.
display piece featuring sharply developed cubic pyrite crystals embedded within dark shale matrix. Carefully selected for its crystal definition, metallic lustre, and geological appeal, this specimen is ideal for mineral collections, geological displays, educational study, and natural history cabinets.The exact specimen shown in the photographs is the piece you will receive, allowing collectors and enthusiasts to closely examine the natural pyrite cube formations, shale textures, and overall mineral presentation before purchase. Every specimen includes a Certificate of Authenticity lifetime guarantee generic card confirming the authenticity of the mineral specimen.Please refer to the listing photographs for full sizing and scale details. PYRITE MINERAL COMPOSITION AND CRYSTAL STRUCTUREPyrite is an iron sulphide mineral with the chemical formula FeS₂ and belongs to the sulphide mineral group. It is one of the most recognisable metallic minerals in the world due to its bright brass-gold colouration and naturally geometric crystal formations.Commonly known as “Fool’s Gold” because of its metallic appearance, pyrite is highly valued by collectors for its crystal symmetry, reflective surfaces, and natural cubic crystal habit. Pyrite crystallises within the isometric crystal system and frequently forms cubes, pyritohedrons, octahedrons, and complex intergrown crystal structures.The pyrite cubes within this specimen display the mineral’s characteristic metallic lustre and sharply defined geometry. Depending on the formation conditions, the crystals may feature smooth reflective faces, fine striations, stepped growth patterns, or subtle tarnish caused by natural oxidation over time. SHALE MATRIX AND GEOLOGICAL CONTRASTThe pyrite crystals are naturally embedded within shale matrix, creating a visually striking contrast between the bright metallic cubes and the darker fine-grained sedimentary host rock. Shale is a sedimentary rock formed from compacted clay, silt, and fine mineral particles deposited in low-energy aquatic environments such as ancient seabeds, lagoons, and river basins.Pyrite commonly forms within shale through diagenetic and sedimentary mineralisation processes where iron and sulphur-rich conditions allow pyrite crystals to precipitate during sediment compaction and burial.The dark shale matrix enhances the visibility of the pyrite cubes while preserving the original geological context in which the crystals formed. Natural fractures, layering, matrix textures, and minor crystal contacts are authentic geological features formed during sediment deposition and mineral growth.Each specimen is completely unique, with variations in crystal size, cube arrangement, matrix colouration, and crystal exposure contributing to the individuality and collector value of the piece. GEOLOGICAL FORMATION AND SEDIMENTARY ENVIRONMENTPyrite cubes in shale form in oxygen-poor sedimentary environments rich in iron and sulphur compounds. As organic material decomposes within marine or sedimentary muds, chemical reactions create sulphide-rich conditions that allow pyrite to crystallise gradually over long geological timescales.The slow growth of pyrite within compacting sediment often produces exceptionally well-defined cubic crystals preserved within the surrounding shale. These formations provide important insights into ancient sedimentary environments and geochemical processes that occurred millions of years ago.Many pyrite-bearing shale deposits formed within prehistoric marine basins where layers of mud and organic material accumulated on ancient sea floors before undergoing lithification into sedimentary rock.The resulting specimens preserve both the crystal structure of the pyrite and the sedimentary textures of the host shale, making them highly desirable for collectors interested in mineralogy and sedimentary geology alike. IDEAL FOR MINERAL COLLECTIONS AND EDUCATIONAL DISPLAYSThis Pyrite Cubes in Shale specimen is ideal for:
• Mineral and crystal collections
• Geological and educational displays
• Sedimentary mineral collections
• Natural history cabinets
• Collector photography setups
• Decorative mineral displays
• Unique geology and mineral giftsIts metallic crystal habit and contrasting shale matrix make it an especially eye-catching specimen suitable for collectors of all experience levels.Pyrite has also historically been valued for its distinctive metallic appearance and crystallographic perfection, though today collector specimens are especially appreciated for their geological significance, natural crystal geometry, and striking visual contrast.Each specimen is individually chosen for quality, crystal visibility, and natural character, ensuring that every piece showcases authentic geological textures and mineral formations created naturally within the Earth over immense geological timescales.
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