Calcite Dolomite Baryte Quartz Taffs Well Quarry Wales UK Mineral Specimen From Alice Purnell Collection with Certificate of Authenticity

Genuine Mineral Association Specimen – Taff’s Well Quarry, Cardiff, Wales

This outstanding mineral association specimen features a natural combination of Calcite, Dolomite, Baryte, and Quartz from the classic locality of Taff’s Well Quarry, near Cardiff, Wales, UK. Carefully selected from the Alice Purnell Collection, this is a genuine natural specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The photographs show the exact piece you will receive, and full sizing details are provided in the listing images.

Taff’s Well Quarry is a well-known British mineral site, valued by collectors for producing attractive carbonate and sulfate mineral associations within Welsh limestone geology.

Mineral Composition and Crystal Information

Calcite

Calcite is a calcium carbonate mineral (CaCO₃) crystallising in the trigonal crystal system. It commonly forms rhombohedral or scalenohedral crystals and is known for its vitreous lustre and wide range of natural colours, from clear and white to honey or grey tones. Calcite is one of the most important and widespread rock-forming minerals.

Dolomite

Dolomite is a calcium magnesium carbonate mineral (CaMg(CO₃)₂), also crystallising in the trigonal system. It often forms saddle-shaped or rhombohedral crystals and is frequently associated with calcite in carbonate-rich environments. Dolomite adds geological complexity and collector value to multi-mineral specimens.

Baryte

Baryte (BaSO₄) is a barium sulfate mineral crystallising in the orthorhombic system. It is recognised for its high specific gravity and tabular or bladed crystal habits. Baryte often appears in pale tones such as white, cream, or light grey, providing contrast within mineral assemblages.

Quartz

Quartz (SiO₂) crystallises in the trigonal crystal system and is famous for its durability (Mohs hardness 7) and glass-like lustre. Quartz in association specimens may appear as small crystal points, druzy coatings, or crystalline clusters within cavities.

Geological Setting – Taff’s Well Quarry

Taff’s Well Quarry lies within the South Wales Carboniferous Limestone region, an area shaped by ancient marine sedimentation and later mineral-rich hydrothermal activity. Over geological time, fractures and cavities within the limestone provided pathways for hot mineral-bearing fluids.

As these fluids cooled, they deposited successive layers of minerals, forming complex associations of carbonates such as calcite and dolomite, alongside sulfate minerals like baryte and silica minerals such as quartz.

This type of multi-mineral growth is highly prized because it records multiple stages of mineralisation and offers a visually varied specimen from a classic UK quarry locality.

Collector Appeal and Display Value

Association specimens featuring multiple well-known mineral species are especially desirable for collectors, as they showcase natural geological processes in a single piece. The combination of carbonate, sulfate, and silica minerals creates an attractive mix of textures, lustres, and crystal forms.

This specimen is ideal for:

• UK and Welsh locality mineral collectors

• Collectors of calcite and baryte associations

• Geological and educational displays

• Natural history enthusiasts

• Unique gifts for serious mineral collectors

Some collectors also note that these minerals have been traditionally associated with spiritual symbolism, though they are primarily valued today for their geological significance and natural beauty.

Authenticity and Provenance

This specimen is a genuine natural mineral association from Taff’s Well Quarry, Cardiff, Wales, UK, sourced from the Alice Purnell Collection. It includes a Certificate of Authenticity lifetime guarantee generic card, confirming it as an authentic mineral specimen.

You will receive the exact piece shown in the photographs, carefully chosen for its quality, locality interest, and collector presentation.

A multi-mineral specimen from this classic Welsh quarry represents an excellent addition to any collection, combining British geological heritage with a striking natural crystal association.