Native Metal Collection (page 2)

Antigorite and bowenite
Group of two specimens of antigorite (above) and two specimens of antigorite var. bowenite below. Both these specimens comprise of (magnesium iron silicate hydroxide)

Copal
Stalactite of New Zealand copal locally known as kauri gum. Copal is the mid-stage between resin and amber. Figure 8 from Amber The Natural Time Capsule

Chalcopyrite or copper pyrite comprises of (copper iron sulphide). It is a common mineral and is found in almost all sulphide deposits. Specimen from Wheal Towan, Cornwall

The Esquel pallasite

The Latrobe gold nugget
A 717gm mass of crystallised cubes of gold about 11cms in length. Specimen was found at Mt. Ivor, Victoria, Australia in the presence of the then govenor of the colony, C. J. Latrobe

Plate 10, fig 2 from Mineralienbuch
An illustration of an andalusite mineral deposit showing columnar crystals. Plate 10, fig 2 from Mineralienbuch by F. A. Schmidt, Stuttgart 1855

Magnetite (iron oxide) specimen from Piedmont, Italy. From the collections of the Natural History Museum, London

Turquoise variety Henwoodite
A specimen of the turquoise variety called Henwoodite, named after William Jory Henwood (1805-1875) from West Phoenix Mine, Linkinhorne, Cornwall

Precambrian Landscape
Artists impression of a Precambrian (4, 500 to 543 million years ago) landscape, when oxygen built up in the atmosphere (about 1)

Ruby and Sapphire
Specimens of the mineral corundum (Aluminum Oxide), a ruby and saphire. These gemstones are varieties of the corundum mineral. A collection of crystals including the Edwardes ruby

Birthstone Series: Lazurite

Gold digging site in Halifax 1873
A photograph taken during the voyage of H.M.S. Challenger (1872-1876), funded by the British Government for scientific purposes

Gold Mine, Nova Scotia, Halifax 1873
A photograph taken during the voyage of H.M.S. Challenger (1872-1876), funded by the British Government for scientific purposes

Gold washing at gold mine, Sandy Point, Strait of Magellan
A photograph taken during the voyage of H.M.S. Challenger (1872-1876) funded by the British Government for scientific purposes

Precious opal in ironside nodule
Opals are not truely crystalline and are therefore mineraloids. They comprise of (hydrated silica glass). Specimen found in Queensland, Australia. On display at the Natural History Museum, London

Silver on Copper
A deposit of elemental, native silver (Ag) on native copper (Cu). Specimen from the Natural History Museum, London originally from Houghton Co. Michigan, U.S.A

Uvarovite garnets comprise of (calcium chromium silicate). They are characterized by their green colour and rounded crystals of either 12 or 24 faces

Pyrite, Fools Gold
Regular, cube-shaped crystals look as if they ve been polished but are formed like this within rock cavities. Pyrite comprises of (iron sulphide)

Columbite
Specimen used by Charles Hatchett when he discovered niobium (then called columbium) and now called columbite in 1801. Mineral collection, the Natural History Museum

Platinum model
A reconstruction of a platinum nugget. Platinum (Pt) is an element and very precious metal. The most common source of platinum is from alluvial deposits

Gobbinsite comprises of (hydrated sodium potassium calcium aluminum silicate) and derives from the zeolite group. Specimen found nr. Black Cave, Island Magee, Co. Antrim

Orthoclase (potassium aluminum silicate) is a major granite forming mineral. Specimen from Brevik, Norway

Rhodonite
A pink specimen of rhodonite (manganese iron magnesium calcium silicate). Rhodon is greek for rose. Specimen from the Natural History Museum, London

Spessartine comprises of (manganese aluminum silicate) and is found in metamorphic environments

The Canyon Diablo meteorite
The cut, polished and etched surface of the Canyon Diablo meteorite reveals its high iron content

Gold in unspecified mineral
Scanning electron microscope image of an elemental map showing the distribution of gold (Au) in mineral samples

Marcasite comprises of (iron sulphide). It is similar in appearance to pyrite, but has a different structural composition

Wavellite
Aggregates of honey-coloured wavellite forming radiating needles on slate. Wavellite comprises of (hydrated aluminum phosphate hydroxide). Specimen from Filleigh, Devon

Regalecus glesne, oarfish
Specimen of an oarfish (Realecus glesne). This species of fish is possibly the longest in the world. Photographed by Harry Taylor

Goyazite
Scanning electron microscope image of the energy-dispersive X-ray spectrum of the mineral goyazite, obtained using Link AN10000 analysis system

Topaz comprises of (aluminum silicate fluoride hydroxide). This is a specimen from the collections of the Natural History Museum, London

Scorodite comprises of (hydrated zinc arsenate) and is characterized by brownish-green crystals. Specimen from the collections of the Natural History Museum, London

Russian topaz
Topaz comprises of (aluminum silicate fluoride hydroxide) and is the birthstone of November. Brown topaz specimens from the collections of the Natural History Museum, London

Lazurite comprises of (sodium calcium aluminum silicate sulphur sulphate). Due to its unique rich colour, it is a semi-precious stone and is often used in jewellery making

Cerussite
Aggregates of white crystals on globular crystalline baryte. Cerussite comprises of (lead carbonate). Specimen from Frank Mills mine, Christow, Devon

Libethenite
Wedge-shaped, dark green crystals of libethenite (copper phosphate hydroxide) with pale brown duftite. Specimen from the Phoenix mine, Lnkinhorne, Cornwall

Variscite
A rare, bluish green, mineral, found in aluminum-rich rocks. Variscite comprises of (hydrated aluminum phosphate)

Scotlandite comprises of (lead sulphite) and derives from the sulphates group. Specimen from the Natural History Museum, London originally from Leadhills, Lanarkshire, Scotland

Cassiterite
A dark-brown single crystal of cassiterite among quartz. Cassiterite comprises of (tin oxide) and forms ornately faceted crystals with high lustre. Specimen from Turnavore mine, St. Agnes, Cornwall

Cassiterite pseudomorphous after orthoclase
Brown granular cassiterite (tin oxide) have replaced twinned orthoclase crystals. Wheal Coates, St. Agnes, Cornwall

The South Africa Gold Fields Exploration Co. House
Located at Hartley Hill Simbo Rivulet Um Vuli River, September1870. Sketch 46 from a collection of original sketches by Thomas Baines, (1859-1871)

Pyrope garnet
A cut stone and collection of crystals of pink pyrope garnet (magnesium aluminum silicate). Specimens from the Natural History Museum, London

Metatorbernite
A specimen of the mineral metatorbernite which contains uranium, copper and phosphorus. It is also radioactive

Schultenite comprises of (lead arsenate hydroxide) and derives from the phosphates group. Specimen from the Natural History Museum, London

Copper in unspecified mineral
Scanning electron microscope image of an elemental map showing the distribution of copper (Cu) in mineral samples

Platinum (Pt) is an elemental and a very precious metal. The most common source of platinum is from alluvial deposits. Specimen from nirjni, Tagilsk, Urals, Russia

Wardite is comprised of hydrated sodium aluminum phosphate hydroxide. This bright green specimen has been deposited in variscite nodules

Connellite
Deep-blue velvety crust of needles with some red cuprite. Connellite comprises of (hydrated copper sulphate chloride hydroxide). Specimen from Wheal Muttrell, Gwennap, Cornwall

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