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Minerals Collection

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47 Items

Background imageMinerals Collection: Anglesite, Matlock, Derbyshire, England

Anglesite, Matlock, Derbyshire, England
Tapering, colourless crystals of anglesite on galena. The specimen label, handwritten by collector Philip Rashleigh, states Common lead ore with flat columnar crystals of white lead ore each side

Background imageMinerals Collection: Galena, Earl Ferrers Mine, Staunton Harold, Leicestershire, England

Galena, Earl Ferrers Mine, Staunton Harold, Leicestershire, England
Reticulated mass of grey galena on top of octahedral crystals of galena with colourless calcite and brassy yellow chalcopyrite, on pink baryte

Background imageMinerals Collection: Liroconite, Wheal Gorland, St Day, Gwennap, Cornwall, England

Liroconite, Wheal Gorland, St Day, Gwennap, Cornwall, England
A large, rare, liroconite crystal on strashimirite found in 1808. At 2.5cm, the specimen is the largest known crystal from any locality worldwide

Background imageMinerals Collection: Gold, Carnon Stream Works, Perranarworthal, Cornwall, England

Gold, Carnon Stream Works, Perranarworthal, Cornwall, England
Gold is a native element and precious metal which has been prized by mankind for thousands of years for its beauty, malleability and resistance to corrosion

Background imageMinerals Collection: Cuprite with Minor Quartz, Gwennap, Cornwall, England

Cuprite with Minor Quartz, Gwennap, Cornwall, England
This specimen was drawn for Specimens of British Minerals, Selected from the Cabinet of Philip Rashleigh (1797, Volume 1, Plate 16)

Background imageMinerals Collection: Wolframite, Castle an Dinas Mine, St Columb Major, Cornwall, England

Wolframite, Castle an Dinas Mine, St Columb Major, Cornwall, England
Wolframite contains iron, manganese and tungsten and is the main ore mineral of tungsten. Until the mid 1800s it was treated as a waste product but it later became a high value by product at many tin

Background imageMinerals Collection: Chalcophyllite, Wheal Gorland, St Day, Gwennap, Cornwall, England

Chalcophyllite, Wheal Gorland, St Day, Gwennap, Cornwall, England
Coarse crystals of chalcophyllite. Collector Philip Rashleigh wrote in his mineral catalogue: Transparent six sided thin Crystals of Copper Ore with some eight sided crystals of green Do

Background imageMinerals Collection: Galena, Matlock, Derbyshire, England

Galena, Matlock, Derbyshire, England
Bright metallic grey galena. Collector Philip Rashleigh wrote in his mineral catalogue 126 Lead Ore shot in the form of a leaf called Thorn-Leaf Lead Ore. Matlock

Background imageMinerals Collection: Chalcopyrite on Baryte, Ecton Mine, Ecton Hill, Staffordshire, England

Chalcopyrite on Baryte, Ecton Mine, Ecton Hill, Staffordshire, England
Brassy yellow chalcopyrite on botryoidal cream baryte. This specimen is a classic example from the Ecton Copper Mines in Staffordshire. Chalcopyrite is an important copper ore

Background imageMinerals Collection: Copper, Cornwall, England

Copper, Cornwall, England
An intricate dendritic growth of copper crystals. Also known as native copper, the specimen is pure copper, uncombined with any other elements

Background imageMinerals Collection: Chalcocite with Quartz, Cooks Kitchen Mine, Illogan, Cornwall, England

Chalcocite with Quartz, Cooks Kitchen Mine, Illogan, Cornwall, England
This specimen was drawn for Specimens of British Minerals, Selected from the Cabinet of Philip Rashleigh (1797, Volume 1, Plate 7)

Background imageMinerals Collection: Torbernite on Quartz, Wheal Basset, Illogan, Cornwall, England

Torbernite on Quartz, Wheal Basset, Illogan, Cornwall, England
An earthy, orange coated, quartz mass bearing fine towers and clusters of books of emerald to bottle green square plates of torbernite

Background imageMinerals Collection: Hematite, Buxton, England

Hematite, Buxton, England
Massive, compact, water worn hematite, dark red in colour. The specimen label states Iron Ore, the best pieces are used for burnishing when polished - from Buxton or thereabouts

Background imageMinerals Collection: Calcite, Ball Eye Mine, Cromford, Derbyshire, England

Calcite, Ball Eye Mine, Cromford, Derbyshire, England
Calcite, dog-tooth spar variety. This specimen was drawn for Specimens of British Minerals, Selected from the Cabinet of Philip Rashleigh (1797, Volume 1, Plate 20)

Background imageMinerals Collection: Malachite, Wheal Husband, Sticker, St Ewe, Cornwall, England

Malachite, Wheal Husband, Sticker, St Ewe, Cornwall, England
Botryoidal malachite coated in limonite. This specimen was drawn for Specimens of British Minerals, Selected from the Cabinet of Philip Rashleigh (1797, Volume 1, Plate 8)

Background imageMinerals Collection: Clinoclase, St Day, Gwennap, Cornwall, England

Clinoclase, St Day, Gwennap, Cornwall, England
Spheroidal clinoclase coating liroconite, 4.5 cm in diameter. The specimen is probably from Wheal Gorland or Wheal Unity. Collector Philip Rashleigh wrote in his mineral catalogue

Background imageMinerals Collection: Galena, Sphalerite, Bitumen and Fluorite, Ashover, Derbyshire, England

Galena, Sphalerite, Bitumen and Fluorite, Ashover, Derbyshire, England
Grey galena, brown sphalerite, black bitumen and colourless fluorite. Collector Philip Rashleigh wrote in his mineral catalogue

Background imageMinerals Collection: Galena, Staunton Harold, Leicestershire, England

Galena, Staunton Harold, Leicestershire, England
Reticulated dull grey galena on larger dull grey octahedral crystals of galena. Collector Philip Rashleigh wrote in his mineral catalogue

Background imageMinerals Collection: Tetrahedrite, Trenance, St Issey, near Padstow, Cornwall, England

Tetrahedrite, Trenance, St Issey, near Padstow, Cornwall, England
Tetrahedrite coated in chalcopyrite with minor siderite. Collector Philip Rashleigh wrote: Crystals of Grey Copper Ore in triangles with a little spatose Iron Ore, near Padstow. Rashleigh Collection

Background imageMinerals Collection: Native Copper, Cooks Kitchen, Illogan, Cornwall, England

Native Copper, Cooks Kitchen, Illogan, Cornwall, England
Solid crystalline copper like a root of a tree crystallised at the points. Collector Philip Rashleigh wrote in his mineral catalogue: Virgin Copper in form of the Root of a Tree

Background imageMinerals Collection: Cassiterite, Wherry Mine, Wherrytown, Penzance, Cornwall, England

Cassiterite, Wherry Mine, Wherrytown, Penzance, Cornwall, England
Cassiterite with quartz. A very rich tin ore of a brown colour with black crystals of a curious form on the surface intermixed with white quartz

Background imageMinerals Collection: Baryte, Bonsall Dale, Bonsall, Derbyshire, England

Baryte, Bonsall Dale, Bonsall, Derbyshire, England
Variety of baryte known as brainstone. White sprays of dendritic crystals in a limonitic ground mass with one polished face

Background imageMinerals Collection: Gypsum, Cumberland Mine, Matlock Bath, Derbyshire, England

Gypsum, Cumberland Mine, Matlock Bath, Derbyshire, England
Curved, fibrous aggregates of gypsum crystals. The crystals are milky white in colour and in the same feathery groups as illustrated in Specimens of British Minerals

Background imageMinerals Collection: Goethite with Calcite, Forest of Dean, Gloucestershire, England

Goethite with Calcite, Forest of Dean, Gloucestershire, England
Stalactitic goethite with colourless calcite crystals. This variety of goethite, known as brush ore, was high quality iron ore from the Forest of Dean, often containing between 60-65% iron

Background imageMinerals Collection: Manganite, Warwickshire, England

Manganite, Warwickshire, England
Acicular manganite crystals on massive manganite. Manganite, which is a valuable manganese ore, was worked at Nuneaton and Hartshill in Warwickshire by the Cornish Mining Company from around 1820 to

Background imageMinerals Collection: Bournonite with Quartz, Herodsfoot Mine, Lanreath, Cornwall, England

Bournonite with Quartz, Herodsfoot Mine, Lanreath, Cornwall, England
Steel-grey twinned bournonite crystals, in distinctive cog wheel formation, with colourless quartz. This fine specimen from the lead and silver mine, Herodsfoot

Background imageMinerals Collection: Cassiterite, Wheal Maudlin, Lostwithiel (formerly in Lanlivery Parish), Cornwall, England

Cassiterite, Wheal Maudlin, Lostwithiel (formerly in Lanlivery Parish), Cornwall, England
A superb twinned crystal of cassiterite. In Cornwall, cassiterite is concentrated in hydrothermal veins and pegmatites associated with granite intrusions

Background imageMinerals Collection: Cassiterite Partly Replacing Orthoclase, Wheal Coates, St Agnes, Cornwall, England

Cassiterite Partly Replacing Orthoclase, Wheal Coates, St Agnes, Cornwall, England
Twinned crystals of orthoclase feldspar partially replaced by cassiterite. This rare kind of replacement, or partial pseudomorph, is best seen in specimens from Wheal Coates

Background imageMinerals Collection: Cassiterite, St Agnes, Cornwall, England

Cassiterite, St Agnes, Cornwall, England
Large crystals of cassiterite, varying from black to dark brown in colour. In Cornwall, cassiterite is concentrated in hydrothermal veins and pegmatites associated with granite intrusions

Background imageMinerals Collection: Chalcopyrite with Calcite and Galena, Staunton Harold, Leicestershire, England

Chalcopyrite with Calcite and Galena, Staunton Harold, Leicestershire, England
Brassy yellow chalcopyrite crystals on colourless scalenohedral calcite crystals (dog tooth spar) with metallic grey galena on limestone

Background imageMinerals Collection: Copper with Quartz, South Caradon Mine, St Cleer, Cornwall, England

Copper with Quartz, South Caradon Mine, St Cleer, Cornwall, England
Copper with crystalline quartz. Most Cornish copper specimens are dull, but native copper (pure copper, uncombined with any other elements) from Caradon is invariably bright

Background imageMinerals Collection: Copper, United Mines, Gwennap, Cornwall, England

Copper, United Mines, Gwennap, Cornwall, England
This specimen was drawn for Specimens of British Minerals, Selected from the Cabinet of Philip Rashleigh (1797, Volume 1, Plate 17)

Background imageMinerals Collection: Copper, Botallack, St Just, Cornwall, England

Copper, Botallack, St Just, Cornwall, England
A dendritic growth of copper crystals. Also known as native copper, the specimen is pure copper, uncombined with any other elements

Background imageMinerals Collection: Chalcocite, Cooks Kitchen Mine, Illogan, Cornwall, England

Chalcocite, Cooks Kitchen Mine, Illogan, Cornwall, England
Coarse platy chalcocite. This specimen was drawn for Specimens of British Minerals, Selected from the Cabinet of Philip Rashleigh (1797, Volume 1, Plate 15)

Background imageMinerals Collection: Scorodite, Tincroft Mine, Illogan, Cornwall, England

Scorodite, Tincroft Mine, Illogan, Cornwall, England
This specimen was drawn for Specimens of British Minerals, Selected from the Cabinet of Philip Rashleigh (1797, Volume 1, Plate 9, Figure 3) which states Is copper ore of a dull olive-green colour

Background imageMinerals Collection: Chalcopyrite with Quartz and Minor Sphalerite, United Kingdom

Chalcopyrite with Quartz and Minor Sphalerite, United Kingdom
This specimen was drawn for Specimens of British Minerals, Selected from the Cabinet of Philip Rashleigh (1797, Volume 1, Plate 7, Figure 3) which states Is yellow copper ore

Background imageMinerals Collection: Chalcopyrite with Malachite, East Pool Mine, Illogan, Cornwall, England

Chalcopyrite with Malachite, East Pool Mine, Illogan, Cornwall, England
Capillary chalcopyrite with malachite. This specimen was drawn for Specimens of British Minerals, Selected from the Cabinet of Philip Rashleigh (1797, Volume 1, Plate 6)

Background imageMinerals Collection: Malachite, North Wheal Basset, Illogan, Cornwall, England

Malachite, North Wheal Basset, Illogan, Cornwall, England
Clusters of botryoidal malachite crystals. Malachite is a common hydrated copper carbonate secondary mineral, formed by the near surface weathering of primary sulphide minerals

Background imageMinerals Collection: Cassiterite, Ulu Johan, Ipoh, Kinta district, Southern Perak, Malaysia

Cassiterite, Ulu Johan, Ipoh, Kinta district, Southern Perak, Malaysia
This large specimen of water worn cassiterite was brought to Cornwall from Malaysia by Redruth businessman James Wickett in 1910

Background imageMinerals Collection: Chalcocite with Chalcopyrite, Tincroft Mine, Illogan, Cornwall, England

Chalcocite with Chalcopyrite, Tincroft Mine, Illogan, Cornwall, England
Steel coloured crystals of chalcocite covering chalcopyrite. This botryoidal variety of chalcopyrite is known as blister copper

Background imageMinerals Collection: Chalcopyrite on Quartz, Dolcoath Mine, Camborne, Cornwall, England

Chalcopyrite on Quartz, Dolcoath Mine, Camborne, Cornwall, England
Brassy yellow crystals of chalcopyrite, with an iridescent tarnish, on colourless quartz crystals. The specimen label states Six sided cristals of yellow copper ore crossing each other in opake

Background imageMinerals Collection: Cerussite on Galena and Baryte, Wirksworth, Derbyshire, England

Cerussite on Galena and Baryte, Wirksworth, Derbyshire, England
Cerussite on galena and baryte. The specimen label states: 330 Lead ore with transparent crystals of lead ore found near Matlock very Rare. Galena is the primary ore mineral of lead

Background imageMinerals Collection: Galena and Quartz, Derbyshire, England (Uncertain Locality)

Galena and Quartz, Derbyshire, England (Uncertain Locality)
Reticulated grey galena with colourless quartz crystals. Galena is the primary ore mineral of lead

Background imageMinerals Collection: Galena with Calcite, Sphalerite and Pyrite, Staunton Harold, Leicestershire, England

Galena with Calcite, Sphalerite and Pyrite, Staunton Harold, Leicestershire, England
6mm pale yellow scalenohedral calcite crystals (dog tooth spar) and brassy yellow chalcopyrite crystals on galena and sphalerite

Background imageMinerals Collection: Galena with Sphalerite, Staunton Harold, Leicestershire, England

Galena with Sphalerite, Staunton Harold, Leicestershire, England
Grey galena with black clusters of sphalerite, colourless calcite and brassy yellow chalcopyrite on pink baryte and brown dolomite

Background imageMinerals Collection: Galena with Sphalerite and Chalcopyrite, Staunton Harold, Leicestershire, England

Galena with Sphalerite and Chalcopyrite, Staunton Harold, Leicestershire, England
Reticulated galena, sphalerite and chalcopyrite on octahedral crystals of galena. The locality is recorded as Staunton Harold and this specimen is probably from the Earl Ferrers Mines

Background imageMinerals Collection: Baryte, Bonsall Dale, Bonsall, Derbyshire, England

Baryte, Bonsall Dale, Bonsall, Derbyshire, England
Variety of baryte known as brainstone. White sprays of dendritic crystals in a limonitic ground mass with one polished face


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