Galena Crystal Coldstone Quarry Yorkshire UK Natural Mineral Specimen 23-50mm

Galena – Coldstone Quarry, Nidderdale, Yorkshire (23–50mm)

This Galena specimen from Coldstone Quarry, Nidderdale, Yorkshire, UK is a genuine natural mineral example, measuring approximately 23–50mm (full sizing please see photo). Carefully selected for crystal form, metallic lustre, and overall presentation quality, this piece represents classic British lead ore mineralisation. The photograph provided shows an example of the actual specimen you will receive. Each crystal includes a Certificate of Authenticity lifetime guarantee generic card, confirming it as a genuine specimen from this well-known locality.

Mineral Species & Chemical Composition

Galena is lead sulphide with the chemical formula PbS and is the primary ore mineral of lead worldwide. It crystallises in the isometric (cubic) crystal system, most commonly forming sharp cubes, cubo-octahedrons, and stepped intergrowths reflecting its internal symmetry.

One of galena’s defining features is its:

• Bright metallic silver-grey lustre

• Distinct cubic crystal habit

• Perfect cubic cleavage in three directions at right angles

• Very high specific gravity (typically 7.4–7.6)

Fresh crystal faces often display a mirror-like metallic sheen, while natural surfaces may show subtle tarnish tones ranging from dull grey to slight bluish hues due to oxidation.

Geological Context – Coldstone Quarry, Nidderdale

Coldstone Quarry is located in Nidderdale, North Yorkshire, within a region historically associated with lead mining and mineralised veins cutting through Carboniferous limestone. The Yorkshire Dales and surrounding areas form part of the Northern Pennine Orefield, one of the UK’s most significant historic lead-producing regions.

Galena in this area formed through hydrothermal processes, where mineral-rich fluids migrated through fractures in sedimentary rock. As temperatures and pressures changed, lead and sulphur combined to crystallise galena within veins and cavities.

Associated minerals in Yorkshire lead deposits may include fluorite, calcite, baryte, sphalerite, and quartz. The matrix attached to some specimens reflects this geological environment, adding context and locality authenticity.

Crystal Habit, Structure & Visual Characteristics

This specimen may feature:

• Well-defined cubic crystals

• Stepped or intergrown formations

• Sharp geometric edges

• Metallic reflective surfaces

• Natural cleavage faces

Galena’s cubic symmetry makes it a textbook example of isometric crystal growth. The precise 90-degree angles and blocky form make it instantly recognisable in mineral collections.

Due to its high lead content, galena feels noticeably heavy for its size, a characteristic appreciated by collectors and geology students alike.

Size, Presentation & Authenticity

• Mineral: Galena (Lead Sulphide – PbS)

• Crystal System: Isometric (Cubic)

• Locality: Coldstone Quarry, Nidderdale, Yorkshire, UK

• Size: Approximately 23–50mm (please refer to photo for full sizing reference)

• Authenticity: Includes Certificate of Authenticity lifetime guarantee generic card

Each specimen is carefully chosen for display appeal and mineralogical interest. Natural variations in crystal size, surface texture, and matrix presence are part of the specimen’s geological character.

Collecting & Historical Significance

Galena has been mined in Yorkshire since Roman times and played a major role in Britain’s industrial history. Specimens from recognised UK localities are highly collectable, particularly when crystal form is well defined.

In spiritual traditions, galena has sometimes been traditionally associated with grounding and stability; these interpretations are cultural in origin. From a geological standpoint, its true value lies in its crystal symmetry, metallic lustre, and historical mining significance.

This Galena specimen from Coldstone Quarry offers a classic example of British cubic mineral formation, ideal for mineral collectors, UK locality enthusiasts, educational study, or as a distinctive natural history display piece.