An opened nodule containing a Flexicalymene sp. specimen. 105 grams total, 47-52 mm



From a Lincolnshire, UK, collection.

Each rectangular and displaying 'golden' flecks. 206 grams total, 9.9-12.9 cm



Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

A bullet-shaped specimen showing the internal gas chambers; set in a box frame with an information label. 928 grams total, 32.7 x 24 cm including frame



From Morocco, North Africa. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.

Comprising a section of nickel-iron meteorite (IAB) set with a suspension loop and suspended from a cord necklace; supplied in a gift box. 6.33 grams, stone: 26 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.

A radiating cluster of white tabular crystals (SrSO4) with dusting of orange mineral present at the tips. 123 grams, 62 mm



From Hammam-Zriba Mine, Tunisia. Acquired at the Bakewell Show, UK, 7 October 2000. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.

Comprising forty large chunks in dark purple colour. 2.64 kg total, 46-72 mm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

A trio of translucent pyramidal points, each with some inclusions. 1.36 kg total, 10.7-12 cm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

Comprising six Mosasaur prognathodon teeth set on a composite matrix. 1.59 kg, 19 cm



From Germany. From a Cambridgeshire, UK, collection.

Mosasaurs (from the Greek for 'lizard') were aquatic dinosaurs which probably gave birth to live young.

An irregular piece of Type C2-ung; supplied in a collector's box with information label. 10.3 grams total, 57 x 38 mm including case, stone: 4 mm



From Morocco, North Africa. From a North American collection. From a Leicestershire, UK, collection.

Comprising three rounded geodes, to be cut or cracked open. 460 grams total, 50-65 mm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

An interesting formation with variously sized white and clear prismatic quartz crystals. 233 grams, 11.2 cm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

Displaying a large quantity of small clear prismatic quartz crystals and some striated pyrite crystals. 145 grams, 80 mm



From South America. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.