Bryan and Cherry Alexander / Geologist panning for platinum in stream near Latyrin-Vayam in Koryakia. Kamchatka, Siberia, Russia, 1999.

Eric Baccega / Geologist studying / explaining mineral cores, Northwest Territories, Canada March 2007

Eric Baccega / Geologist studying mineral cores through a magnifying galss, Northwest Territories, Canada March 2007

Eric Baccega / Geologist studying and explaining mineral cores, Northwest Territories, Canada March 2007

Paul D Stewart / Two of Darwin's staunchest supporters in the field during a trip to the Rockies in 1877. Left (seated) British botanist Joseph Dalton Hooker, the director of Kew and one of Charles Darwin's close frie...

Paul D Stewart / 1837 portrait of Gideon Mantell (3 February 1790 - 10 November 1852). Engraved from a painting by Samuel Stepney, later hand colouring. Published in G. Mantell's 'Thoughts on a Pebble' 1849. Gideon Ma...

Paul D Stewart / Illustration from 'The Anniversary of the Literary Fun 1836' by Thomas Hood, published by Baily and Co, Cornhill. The reputation of academics for absent mindedness, eccentricity, and absorbtion in the...

Paul D Stewart / Illustration of 'Strata of Tilgate Forest in Surrey' showing Gideon Mantell (seated) while two workmen excavate a partly exposed fossil spine of Iguanodon. The strata are labelled as: 1 Loam, 2 Sand a...

Paul D Stewart / 'Organic Remains restored' front page illustration of the Penny Magazine, October 26th 1833, with wood engraving illustration and later hand colouring. This is the first illustrated popular article on...

Paul D Stewart / Silhouette first produced by Auguste Edouart of 'William Buckland and his Wife and Son Frank, Examining Buckland's Natural History Collection. The original is in the Museum of Fine Arts in Boston. Thi...

Paul D Stewart / Illustration of Mammoth and Pteranodon 1820. An unrecorded, possibly unique print by 'E.S - F.G.S' (Fellow of Geological Society) in mezzotint style with contemporary hand colouring and ink inscriptio...

Paul D Stewart / Illustration of Ichthyosaur skeleton, copper fold-out engraving at life size, (2.5cm ammonite top right for scale). It comes from a paper by Sir Everard Home in 1819. He was the first geologist to pub...

Paul D Stewart / The first scientific illustration of an Ichthyosaur skull, Temnodontosaurus platydon, discovered by Mary Anning, 1812. It comes from an 1814 paper in the Philosophical Transactions of the Royal Societ...

Paul D Stewart / Johann Jakob Scheuchzer (born August 2nd 1672 - died June 23rd 1733). Swiss traveller naturalist and geologist. Contemporary Folio size Portrait copper engraving at 59 years old (1731) from Physica Sa...

Paul D Stewart / Illustration frontispiece from Thomas Burnet's 'The Sacred Theory of the Earth' 1684, the most popular geological work of the 17th century. Christ stands aside the full cycle of creation with the epit...

Paul D Stewart / Illustration with later hand colouring from Thomas Burnet's 'The Sacred Theory of the Earth' 1684. In it he postulates how the 'perfect' featureless earth of the creation is transformed by waters unle...

Paul D Stewart / Illustration with later hand colouring from Thomas Burnet's 'The Sacred Theory of the Earth' 1684. In it he postulates how the 'perfect' featureless earth of the creation is transformed by waters unle...

Paul D Stewart / 1856 portrait of Hugh Miller, Scottish geologist and palaeontologist, born 1802 died 1856. Photographic frontispiece of author by J.G. Tunny in some first editions of Miller's posthumous 1857 book 'Te...

John Cancalosi / Kunzite, ore of lithium. It is a pink to light purple variety of the mineral spodumene. Discovered in 1902 and named after geologist George F. King. Only popular as a gemstone since the 1990s, Used as...