Mineral Collection (page 10)

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

Agate
A polished slice of agate from Uraguay. Agate (silicon dioxide) is a cryptocrystalline quartz

Chrome diopside
Two variations of a diopside gemstone (calcium magnesium silicate). Left: Deep-green faceted cut stone; locality unknown. Right: Small translucent green detached crystal from Outokumpu, Finland

Plate 38 from Mineralogie
Beau Moceau de Malachite Rubanee de Siberie. From Recuille complet de Mineralogie? vol.5 (1790) by F.L. Swebach Desfontaines

Plate 53 from Mineralogie
Mine de Plomb blanc en rayon et Colore du Hars tire du Cabinet de Mr. Aubert. From Recuille complet de Mineralogie? vol.6 (1790) by F.L. Swebach Desfontaines

Baltic amber with caddis fly
A Caddis fly, Trichoptera preserved in Baltic amber. The cracks in the amber are filled with crystals of iron pyrite. Specimen dates from the Upper Eocene

Plate 26 from Mineralogie
Etain Jaune Cristallise en octaedre avec un coommencement de prisme d Angleter livre de la belle collections dr Mr. Forster. From Recuille complet de Mineralogie? vol.6 (1790) by F.L

Agate
A polished slice of agate or chalcedony from Uraguay. Agate (silicon dioxide) is a cryptocrystalline quartz

Plate 42 from Mineralogie Volume 1 (1790)
Coupe de la corne d ammons don?t chacunes des cazes, renferme une variete particuliere du Spath calcaire. From Recuille complet de Mineralogie? vol.1 (1790) by F.L. Swebach Desfontaines

Plate 40 from Mineralogie
Mine de Cuivre Vert Soieuse avec Azur mamelonee. From Recuille complet de Mineralogie? vol.5 (1790) by F.L. Swebach Desfontaines

Plate 2 from Mineralogie Volume 1 (1790)
Gipse ecailleux perle dans ses calsure et en prismes dont les sommts aronclis, des environs de Paris. From Recuille complet de Mineralogie vol.1 (1790) by F.L. Swebach Desfontaines

Plate 13 from Mineralogie Volume 1 (1790)
Selenite en prismes tres alonge et transparant, d Espagne tire du Cabinet de Mr. Grigot d Orey. From Recuille complet de Mineralogiea vol.1 (1790) by F.L. Swebach Desfontaines

Plate 102 from Mineralogie
Superbe groupe de grands cristaux d Aigue marine de Siberie. From Recuille complet de Mineralogie Vol.3 (1790) by F. L. Swebach Desfontaines

Plate 34 from Mineralogie
Curieux morceau de Mine de Cuvre vert et bleu de Montagne de Mr. Forster. From Recuille complet de Mineralogie? vol.5 (1790) by F.L. Swebach Desfontaines

Corundum group
A collection of crystals including ruby and sapphire particolor, ruby rhomboid, and hexagonal cut sapphire

Variety of tektites

Adamsite-(Y)
Recently discovered rare carbonate mineral specimen collected from a quarry in Mont Saint-Hilaire, Quebec, Canada. Named after Frank Dawson Adams

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

Frederick Noel Ashcroft (1878-1949)
Frederick Noel Ashcroft, a mineralogist, in Sedrum. Ashcroft collected swiss minerals which are now housed at the Natural History Museum, London

Jadarite specimen
The mineral jadarite has the same chemical composition as kryptonite. Discovered in Serbia in 2006, jadarite is composed of sodium, lithium, boron silicate and hydroxide

The Six Voyages of Jean-Baptiste Tavernier
English Translation, London. 1677-78. Jean-Baptiste Tvernier was a French writer, traveller and trade merchant. He amassed a small fortune through his expertise and trade in diamonds

Birthstone Series: Zircon
Zircon comes in a variety of colours, but most commonly brown or green. It is the birthstone for the month of December (along with Tanzinte and Turquoise). Photographed by Harry Taylor

Thenardite
A specimen of the mineral Thenardite (number 1929, 1859) held in the Natural History Museums Mineral Department

Birthstone Series: Fire Opal
This specimen is called a fire opal because of its red-orange colour. Many of these specimens originate from Mexico. Opal is the birthstone for the month of October. Photographed by Harry Taylor

Birthstone Series: Lazurite

Marble, Breccia Coallina Rosa
Specimen number BM 82645, from the Ruins of Ancient Rome

Arsenopyrite
Specimen number BM 20204, from the Virtuous Lady Mine, Buckland Monachorum, Devon, England

Birthstone Series: Citrine
Citrine is a form of quartz that appears in different a variety of yellows and oranges, it is the birthstone for the month of November along with Topaz. Specimen number 21470

Marble, Breccia Sanguigna
Specimen number BM 50289, from Saxony

Jasper a Hungarian viszla, photographed by Harry Taylor

Whewellite
A specimen of the mineral Whewellite (number 1931, 1), held in the Natural History Museums Mineral Department

Diamond field, Cape of Good Hope
A photograph taken during the voyage of H.M.S. Challenger (1872-1876), funded by the British Government for scientific purposes

Calcareous Sandstone, Bermuda 1873
A photograph taken during the voyage of H.M.S. Challenger (1872-1876), funded by the British Government for scientific purposes

Included diamond gemstone
A two-carat rectangular step-cut diamond with a large violet-red garnet inclusion visible in the table facet

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

Sulphur springs, St. Michael, Azores 1873
A photograph taken during the voyage of H.M.S. Challenger (1872-1876), funded by the British Government for scientific purposes

Birthstone Series: Opal
Opal is a form of silica and it is the birthstone (along with Tourmaline) for the month of October. Natural History Museum specimen number: 1908, 235. Photographed by Harry Taylor

Sapphire turban button
A rose-cut facetted deep-blue sapphire mounted in a button of quartz, inlaid with gold, rubies & emeralds. No 198 in the collection of Sir Hans Sloane

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

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

Gypsum is comprised of (hydrated calcium sulphate). It forms from the evaporation of highly saline waters producing massive beds

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