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PRODUCTS BY WEIGHT
BOX SETS
PLASTIC DISPLAY PRODUCTS
PRODUCTS BY WEIGHT
BOX SETS
PLASTIC DISPLAY PRODUCTS
£1.50 – £2.50 ex VAT
Bornite mineral specimens from Congo, Africa exhibiting excellent text book iridescent blue colouration and a metallic lustre as well as the expected density. Bornite is a copper ore mineral which is often used in the educaitonal sector in geology and science lessons. When acid treated, it is known as peacock ore owing to its vibrant purple colours. Specimens are available in various sizes and come in a card tray with a label.
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Phone: +1 (23) 456 789
Bornite (sometimes known as peacock ore) is a sulfide mineral that crystallizes within the orthorhombic system. The minerals most striking feature is its vibrant iridescent blue, purple or cerise colouration which is what appears to attract many eyes initially. Its next surprising (to many) feature is its density, for its size, bornite is very heavy, and those (especially who are just being introduced to geology or mineralogy or who are just viewing it in a show room) often remark at its surprising weight when initially picking it up. Bornite also has a metallic lustre, mainly due to the amount of copper present as it is also a primary copper ore mineral. The combination of Iron & Copper make this a dense mineral, specific gravity 5.06 – 5.08 and is often important in educational establishments. However, it also has a niche in the gemstone gift market, partly due to its bright colour but also when treated with acid, the mineral can change to an even more vibrant blue colour, a bright purple or a brassy yellow a metallic green as well as a mixture of all 4. When subject to this process, the mineral is often sold on as ‘peacock ore’. These mineral samples come from the Congo and are available in various sizes, each supplied in a labelled card tray.
Weight | 600 g |
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Specimen Size | 1.5" x 1.5", 2" x 2", 3" x 2", 4" x 3" |
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Chalcopyrite mineral samples from Morocco, exhibiting typical yellow brassy colour with a metallic lustre. Lower grade when compared to our Norwegian stock but also includes occurrences of bornite which is a blue colour. Samples are available in 3 sizes, each supplied in a labelled card tray.
184 in stock
Chalcopyrite mineral specimens from Sulitjelma, Norway, a major copper ore mineral, these pieces exhibit excellent quality chalcopyrite detailing the shiny brassy yellow colouration and metallic lustre expected. These mineral specimens are approximately 70% – 80% chalcopyrite and are available in various sizes and come supplied in card tray with an information label.
Peacock ore mineral specimens from Mexico, a striking altered variation of chalcopyrite, it exhibits a rich blue colouration with occurrences of purple, and yellow. Very dense as expected, we supply this mineral specimen in 2″ x 2″ sizes, each sample comes supplied in card tray with a data label.
Bornite with Feldspar and quartz, a strange and colourful mixture of minerals and crystals making a unique specimen, these pieces were collected by staff from Tysfjord, Northern Norway, due to the content, they have a vibrant metallic colouration and are available in 3 sizes, supplied in a card tray with a label.
Native copper ore mineral specimens from the famous Keweenaw copper deposits of Mitchigan, U.S.A. The specimens have a heavy red-orange metallic specimens with streaks of blue-green oxidation and a wiry crystal habit. Available in a range of sizes.
Moss Agate mineral specimens from India, deep green in colour due to the presence of chrome and iron mineral impurities, this chalcedony mineral breaks with a conchoidal fracture, has a glassy texture and can have sharp edges, caution is advised. Available in various sizes, this well known mineral has been used in the past as a gemstone as it takes a high polish, natural specimens, they will come supplied in a card tray with an information label.
Orthocalse feldspar mineral specimens from Evje, Norway. It exhibits a pale pink, white or pale grey colouration with excellent cleavage planes with rhombic crystal forms, a common mineral found in granites and rhyolites, orthoclase belongs to the feldspar family of minerals and can be found all over the world. Specimens are available in various sizes and come supplied in a card tray with an information label.
Fulgerite mineral specimens from Algeria, formed from lightening strikes which pieces the desert sands instantly melting and fusing the quartz crystals creating a light weight hollow piece of rock.
These particular samples are a milky white to pale yellow colour and show typical fibrous crystal habit expected from Witherite. Samples are supplied in a white card with an information label.
Iceland spar is a clear variation of calcite, it exhibits the rhombic crystal system of calcite perfectly, the crystals easily divide into rhombs, making them well sought after for a variety of reasons. Originally reported from Helgustadir Mine, Eskifjord, Iceland, hence its name. One of the most remarkable aspect of Iceland spar is its refractive properties. When light passes through one of the crystals, it is divided into two rays at different angles which results in a double refraction effect. Essentially, anything seen though the crystal is seen in double. This can best be seen if you place the calcite over some text, it will appear as if it has been printed twice. These mineral samples come from Santa Eulalia, Chihuahua, Mexico and are available in 2 sizes: Upto 1″ and Over 1″. They come in a card tray with an information label.
Tektite mineral specimens which were collected from Thailand, and have formed an irregular ‘tear drop’ shape. Each specimen measures 10 – 20mm approx in size. Radiometric dating gives an approximate age of 700,000 years old. Specimens are irregular in shape and are mainly black & opaque with a glassy lustre on fractured surfaces.
Desert rose mineral specimens composed from gypsum found in Tunisia, the samples are composed of numerous crystals which resemble ‘petals’ which are randomly orientated, thus giving them a rose flower effect. Specimens are supplied in a 1.5″ x 1.5″ card tray or as approximately 1 cm diameter pieces in 1″ magnifier boxes with an information label.
Specimens of Salt Pseudomorphs on a limy matrix, collected from the Triassic Aust Cliff in Avon, UK. Salt Pseudomorphs serve as important inicators of paleoenvironmental conditions. They typically form in semi arid (dry) climates, where saline water evaporates, which leaves behind cubic salt crystals. These salt crystals later dissolve, occasionally preserving their cubic imprints These specimens are available in multiple sizes and come supplied in a white card tray with an information label.
20 in stock
Baryte mineral specimens collected form Somerset in the UK, exhibiting a bladed crystal habit or massive form, the dense specimens are an off white, yellow or brown colour due to staining from hematite (iron ore), available in various sizes, ideal for educational use.
Specimens of small almandine garnets found in India. These specimens are supplied in a small white card tray with an information label. The specimens are approximately 1″ – 1.5″ cm in diameter though this will vary slightly.
18 in stock
Pyrite on Rhaetic Bone Bed collected from Westbury-on-Severn, Gloucestershire. Of our specimens it is the pyrite crystal bed which is the key feature, some specimens may exhibit bones or scales but naturally this is no guarantee
9 in stock
gypsum satin spar with an orange colouration, found in Morocco, these mineral specimens exhibit excellent fibrous texture and a silky lustre, along with the unusual orange colour, makes these particular samples very sought after simply just for their unique appearance. Available in 2″ x 2″ size pieces only and supplied in a card tray with a label.
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