Stannite Crystal Cligga Head Cornwall Natural Tin Copper Iron Sulfide Mineral 18-32mm Genuine UK Collector Specimen with Certificate

Stannite Crystal – Cligga Head, Perranporth, Cornwall, UK

This genuine Stannite crystal specimen originates from the historic mining locality of Cligga Head, near Perranporth in Cornwall, UK. Carefully selected for mineral character and collector appeal, each specimen measures approximately 18–32mm. The photograph shows an example of the actual specimen you will receive. Please refer to the listing images for full sizing and natural variation within this range.

Your specimen includes a Certificate of Authenticity lifetime guarantee generic card, confirming it is a 100% genuine Cornish mineral specimen.

Mineral Species & Chemical Composition

Stannite is a tin copper iron zinc sulfide mineral with the chemical formula:

Cu₂FeSnS₄

It belongs to the sulfide mineral group and crystallises in the tetragonal crystal system. Stannite is closely related structurally to minerals such as chalcopyrite and kesterite, and it is recognised as an important tin ore mineral.

Typical physical and mineralogical properties include:

• Mineral Group: Sulfide

• Crystal System: Tetragonal

• Chemical Formula: Cu₂FeSnS₄

• Colour: Steel-grey to black

• Lustre: Metallic

• Hardness: 4 on the Mohs scale

• Streak: Dark grey to black

Stannite commonly occurs in granular masses but can also form well-defined crystals, particularly in classic hydrothermal tin mining districts such as Cornwall.

Geological Formation – Cligga Head, Cornwall

Cligga Head is a historically significant Cornish mining area known for tin and copper mineralisation. The mineral deposits formed through hydrothermal processes, where hot, metal-rich fluids circulated through fractures in the host granite and surrounding rocks.

As these fluids cooled, sulfide minerals such as Stannite, chalcopyrite, arsenopyrite, and pyrite crystallised within quartz veins and greisenised granite. The geology of Cornwall, particularly its granite intrusions, provided ideal conditions for tin-bearing mineral formation.

Cornwall has been internationally recognised for centuries as a major tin-producing region, and minerals from classic localities such as Cligga Head are highly valued by collectors of British mining specimens.

Appearance & Crystal Characteristics

Stannite from Cligga Head typically displays a metallic steel-grey to dark black colour with a reflective metallic lustre. Crystals may appear as sharp tetragonal forms or as intergrown masses associated with quartz or other sulfide minerals.

Natural surface textures, minor matrix attachment, and small associated mineral inclusions are normal features of authentic Cornish specimens. No artificial enhancement or treatment has been applied beyond careful cleaning.

Each 18–32mm specimen offers a compact yet visually distinctive example of classic Cornish tin mineralisation.

Collecting & Historical Significance

Cornish Stannite is particularly desirable among collectors of UK minerals and historic mining localities. The combination of tin content, hydrothermal origin, and association with the world-famous Cornish tin mining industry adds geological and historical importance to each piece.

Specimens from Cligga Head are sought after for their locality value, making them suitable for:

• British mineral collections

• Tin ore mineral displays

• Sulfide mineral study collections

• Mining history exhibits

Stannite is sometimes traditionally associated in belief-based practices with focus and strength; these associations are spiritual rather than scientific.

Authenticity & Individual Selection

Each Stannite crystal is a carefully chosen genuine specimen from Cligga Head, Cornwall. The photograph shows an example of the actual specimen you will receive within the stated 18–32mm size range. Please review all images for scale and natural mineral variation.

Every piece is supplied with a Certificate of Authenticity lifetime guarantee generic card, confirming its genuine Cornish origin.

A classic example of British hydrothermal tin mineralisation, this Cligga Head Stannite specimen represents Cornwall’s rich geological heritage and offers strong collector appeal for mineral enthusiasts and mining history collectors alike.