Description
British Fluorite with Pyrite Inclusions from Ladywash Mine, Derbyshire, England
This striking British Fluorite specimen from Ladywash Mine in Derbyshire, England features transparent fluorite crystals displaying natural clarity alongside visible pyrite inclusions. Specimens from this historic Peak District locality are well regarded among mineral collectors for their clarity, crystal form, and distinctive mineral associations.
The crystal structure and natural inclusions create a visually engaging specimen that reflects the geological conditions under which it formed. The combination of transparent fluorite with metallic pyrite inclusions provides contrast and adds scientific and aesthetic interest to the piece.
The listing photographs show the exact specimen you will receive, allowing collectors to closely examine the crystal structure, inclusions, and overall mineral composition before purchase.
This crystal is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card.
Please refer to the listing images for full sizing and scale.
Mineral Identification and Composition
Fluorite is a halide mineral composed of calcium fluoride and is recognised for its geometric crystal forms and wide colour range. It crystallises in the isometric system and commonly forms cubes or cubic clusters.
Mineralogical details include:
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Mineral Name: Fluorite
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Chemical Formula: CaF₂ (Calcium Fluoride)
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Mineral Class: Halide
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Crystal System: Cubic (Isometric)
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Hardness: 4 on the Mohs scale
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Lustre: Vitreous
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Transparency: Transparent to translucent
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Cleavage: Perfect octahedral cleavage
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Crystal Habit: Cubes, cubic clusters, or intergrown formations
The fluorite crystals in this specimen display notable transparency, allowing internal mineral inclusions such as pyrite to be visible within the crystal structure.
Pyrite Inclusions and Associated Minerals
Pyrite, commonly known as iron sulphide, frequently occurs alongside fluorite within hydrothermal mineral veins. In this specimen, pyrite appears as metallic inclusions embedded within the fluorite crystals, creating natural mineral contrast.
Key features of pyrite inclusions include:
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Metallic golden to brassy appearance
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Often forming cubic or granular crystal forms
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Distinct reflective metallic lustre
The presence of pyrite inclusions offers valuable insight into the conditions present during mineral formation, as both minerals crystallised from the same mineral-rich hydrothermal fluids.
These inclusions can produce visually interesting patterns when seen through transparent fluorite crystals.
Geological Formation in the Derbyshire Orefield
Ladywash Mine lies within the Derbyshire Orefield of the Peak District, an area famous for its historic lead mining and diverse mineral specimens. The region’s mineralisation developed during hydrothermal activity when mineral-rich fluids travelled through fractures and cavities within Carboniferous limestone.
As these fluids cooled, dissolved elements crystallised along vein walls, producing a variety of minerals including fluorite, galena, calcite, baryte, and pyrite.
Fluorite formed when calcium combined with fluorine within these mineralising fluids, allowing cubic crystals to grow within open cavities. Pyrite crystallised under similar conditions, resulting in the inclusion relationships visible within some fluorite specimens.
Ladywash Mine Locality
Ladywash Mine, located in the Peak District of Derbyshire, is one of the most recognised historic mining sites in the region. The locality has produced a range of attractive mineral specimens and remains well known among collectors of classic British mineral localities.
Minerals commonly associated with Ladywash Mine include:
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Fluorite
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Galena
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Pyrite
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Calcite
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Baryte
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Quartz
Fluorite specimens from Derbyshire are valued for their clarity, crystal form, and association with other metallic minerals typical of the region’s hydrothermal veins.
Collecting and Display
British fluorite from the Peak District represents an important part of the UK’s mineral collecting heritage. Specimens from Ladywash Mine are appreciated by collectors interested in classic British localities and mineral associations.
This specimen may be suitable for:
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British mineral locality collections
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Fluorite crystal collections
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Geological display cabinets
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Educational mineral collections
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Collector display shelves
In some traditions, fluorite is traditionally associated with symbolic or spiritual interpretations, although such interpretations are cultural perspectives rather than scientific conclusions.
Authentic Natural Mineral Specimen
This British Fluorite specimen with pyrite inclusions from Ladywash Mine, Derbyshire, England is a genuine natural mineral selected for its clarity, crystal structure, and locality significance.
The specimen includes a Certificate of Authenticity lifetime guarantee generic card, confirming the authenticity of the mineral.
Please review the photographs carefully for full sizing and scale, as the images clearly show the exact specimen you will receive.





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