Natural History - Historic Agate Mineral Specimen Coaster Set

Displaying fine examples of hopper quartz crystals and well-formed sphalerite crystals; purchased for £30.00 from Gregory, Bottley & Lloyd, in the 1980s, with an old label. 1.08 kg, 12.7 cm



Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent. Accompanied by an original historic index file card.

A nickel-iron meteorite (IAB). 25.3 grams, 25 mm



From a Lincolnshire, UK, collection.

A crater field of roughly 26 craters was found in the vicinity of this crater, which is estimated to date to 4-5 thousand years BP. The age of the meteorite itself is thought to be c.4.5 billion years, formed as part of the development of this solar system. The largest two fragments, the 30.8 ton Gancedo and 28.8 ton El Chaco, are among the heaviest meteorite masses ever recovered on Earth. In 1576, the governor of a province in Northern Argentina commissioned the military to search for a large mass of iron, which it was believed the local people claimed had fallen from the sky and which they used for their weapon production. The expedition discovered a large mass of metal which was assumed to be an iron mine and brought back a few samples, which were described as being of unusual purity. Following the legends, in 1774 Don Bartolomé Francisco de Maguna rediscovered the iron mass. He himself did not believe that the stone had fallen from the sky and assumed that it had formed by a volcanic eruption. However, he sent the samples to the Royal Society of London. In 1990 it became protected by law.

Comprising: granite from A40 construction works in Middlesex, collection number 505; wood opal, collection number 243; citrine from Brazil, collection number 105; goethite in quartz from England, collection number 143; a cut amethyst agate geode from Chihuahua, Mexico, collection number 545; realgar from Hungary, collection number 519 with old Gregory, Bottley and Lloyd label; granite from adjacent to Ruislip Road, Greenford, Middlesex, collection number 457; dioptase, collection number 391; pyrite from Mexico, collection number 42. 720 grams total, 29-78 mm



Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent. Each specimen accompanied by an original historic index file card.