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LUNAR METEORITE SLICE

Lunar meteorite slice. This is a sample from lunar meteorite Northwest Africa 482. This meteorite is very rich in the feldspar mineral anorthite, which gives it its pale colour. The original meteorite weighed around one kilogram and was purchased in Morocco in 2001, with the original location thought to have been in Algeria. This sample is held at the Natural History Museum, London, UK. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

ANNE SOWERBY, WIFE OF JAMES SOWERBY

Anne Sowerby, sketched portrait. Anne Brettingham De Carle (1764-1815) was the wife of the English naturalist and illustrator James Sowerby (1757-1822). They married in 1786. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY)

ANNE SOWERBY, WIFE OF JAMES SOWERBY

Anne Sowerby, sketched portrait. Anne Brettingham De Carle (1764-1815) was the wife of the English naturalist and illustrator James Sowerby (1757-1822). They married in 1786. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY)

ESTHERVILLE MESOSIDERATE

The Estherville mesosiderite formed after a catastrophic collision between two asteroids. Mesosiderites are an irregular jumble of metal grains and angular pieces of rock. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

PARNALLE ORDINARY CHONDRITE

Parnallee ordinary chondrite, part of the Parnallee meteorite that fell in India in 1857. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

SLICE OF CANYON DIABLO METEORITE

This slice of Canyon Diablo is 15 centimetres across. Iron meteorites, when sliced open and etched with acid, typically show a distinctive criss-cross pattern known as the Widmanstatten pattern. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

SIENA METEORITE ROCK

One of the stones of the Siena meteorite shower, which fell over Siena, Italy in 1794. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

LEPIDOLITE LILAC ROCK CRYSTAL

Lepidolite is a phyllosilicate mineral of the mica group. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

LEPIDOLITE MICA ROCK

Lepidolite is a phyllosilicate mineral of the mica group. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

LABRADORITE ROCK CRYSTALS

Specimen of labradorite feldspar mineral showing iridescent colouring. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

LEOPARDSKIN JASPER STONE

Leopardskin polished jasper stone. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

KYANITE CRYSTAL

Kyanite is also known as disthene, rhaeticite and cyanite. It is a silicate with columnar crystals. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Specimen of polished yellow jasper with veins and marking. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

SPOTTED JASPER STONE

Specimen of spotted yellow jasper, polished, to reveal circles and spots in the mineral stone. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

BRECCIATED JASPER STONE

Brecciated, or red, Jasper is red with black or brown rock inclusions and patches of clear crystal (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

JASPER POLISHED STONE

Jasper is mineral chalcedony, an opaque impure variety of silica, often brightly coloured and veined. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

HAEMATITE MINERAL ROCK

Haematite, or hematite, is the mineral form of iron found in ore deposits. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

DIGITAL MUSEUM SERVICE

Digital museum service. Visitor using a NaturePlus card in the Cocoon display in the Darwin Centre at the Natural History Museum, London, UK. The NaturePlus card, when swiped through a scanner as here, allows visitors to save digital displays for later viewing on a website at home. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

HAEMATITE TUMBLESTONE POLISHED STONE

Haematite can be tumbled, or polished, to produce a silver shiny surface. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

HAEMATITE GROUP OF STONES

A group of haematite, or hematite, stones, two polished and one natural rock. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

JASPER POLISHED STONE

Jasper is form of chalcedony, an opaque impure variety of silica, which is often speckled and veined. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

CASTANOSPERMUM AUSTRALE SEEDPOD

Moreton Bay chestnut (Castanospermum australe) seedpod. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

AFZELIA AFRICANA SEEDPOD

Afzelia africana seedpod. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

SCREW PINE (PANDANUS ATROCARPUS) FRUIT

Screw pine (Pandanus atrocarpus) fruit. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

STONE OAK (LITHOCARPUS SP.) NUTS

Stone oak (Lithocarpus sp.) nuts. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

BIG-CONE PINE (PINUS COULTERI) CONE

Big-cone pine (Pinus coulteri) cone. This is the largest cone of any pine species. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

BLEEDWOOD TREE SEED PODS

Bleedwood tree (Pterocarpus angolensis) seed pods. Specimen held at the Natural History Museum, London, UK. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

CORAL TREE SEED PODS

Coral tree (Erythrina folkersii) seed pods. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

TRITONIA AUREA, ILLUSTRATION

Tritonia aurea flowers. Illustration from Paxton's Magazine of Botany, Volume 15 (1849), held in the Botany Library at the Natural History Museum, London, UK. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

HAEMATITE MINERAL ROCK

Haematite, or hematite, is the mineral form of iron found in ore deposits. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

GARNET CRYSTAL AND ROCK

Garnet gem specimen. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Gypsum is a very soft mineral composed of calcium sulfate dihydrate. It is often translucent. It has many practical uses because of its softness. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

GARNET GEMSTONE

Garnet gemstone. Garnet is also prized as hard mineral for grinding and polishing. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

FUCHSITE MINERAL STONE

Fuchsite is a green chromium-rich variety of the mineral muscovite. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

DOLOMITE MINERAL

Dolomite. This is a carbonate mineral composed of calcium magnesium carbonate stone with small crystals. It is also known as dolostone. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

FLUORITE CRYSTAL SPECIMEN

Fluorite. Also called fluorspar, this is a mineral form of calcium fluoride. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

CARNELIAN GEMSTONE

Carnelian specimen. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Copper is a valuable mineral element often found in sulphide deposits. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

DESERT ROSE MINERAL CLUSTERS

Desert rose specimen. Desert rose is the colloquial name given to rosette formations of the minerals gypsum and barite with poikilotopic sand. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Chalcopyrite. Copper iron sulfide mineral. Stone with multicoloured reflective shiny surface colours. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

CHRYSOCOLLA SPECIMEN

Chrysocolla is formed from hydrated copper silicate, and often has a green verdures surface. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

AMBER CITRINE QUARTZ STONE

Citrine is a form of quartz, with yellow, amber or brown colour. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

CHIASTOLITE STONE

The mineral chiastolite is variety of andalusite with a clear distinctive cross shape pattern. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Calcite, carbonate mineral and the most stable polymorph of calcium carbonate. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Chalcopyrite. Copper iron sulfide mineral. Stone with multicoloured reflective shiny surface colours. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

CELESTITE CRYSTALS

Celestine, or celestite, is mineral made up of strontium sulfate. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

GREEN CALCITE CRYSTAL

Green calcite carbonate mineral, polymorph of calcium carbonate . (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

THREE CALCITE CRYSTALS

Calcite is carbonate mineral and the most stable polymorph of calcium carbonate. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

CALCITE CRYSTAL

Calcite carbonate mineral, polymorph of calcium carbonate. Brown coloured crystal. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Beryl (eryllium aluminium cyclosilicate) specimen. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

ARAGONITE CRYSTALS

Aragonite carbonate cluster of crystals. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

AZURITE COPPER ORE STONE

Azurite is a copper ore mineral, also known as chessylite. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Amethyst is violet to purple coloured mineral and crystal, and variety of silica quartz. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

BANDED AMETHYST STONE

Amethyst is a violet to purple coloured mineral and crystal, and variety of silica quartz. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Amethyst is a violet to purple coloured mineral and crystal, and a variety of silica quartz. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Amethyst is violet to purple coloured mineral and crystal, and variety of silica quartz. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

Amethyst is violet to purple coloured mineral and crystal, and variety of silica quartz. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

AMETHYST GEODES

An amethyst geode is formed when large crystals grow in open spaces inside the rock. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

LARUS RIDIBUNDUS, BLACK-HEADED GULL

Black-headed gull, photographed by Janos Jurka in in Kasttjarn, Dalarna, Sweden (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

An amethyst geode is formed when large crystals grow in open spaces inside the rock. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

MOSS AGATE STONE

Agate moss. microcrystalline variety of silica with grain and colour. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

AMAZONITE STONE

Amazonite green stone. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

DYED AGATE SLICE

Dyed agate slice. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)

DYED AGATE SLICE

Dyed agate slice. (KEYSTONE/SCIENCE PHOTO LIBRARY/NATURAL HISTORY MUSEUM, LONDON)