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Chalcocite is a soft (2.5 – 3 on Moh’s scale) copper sulphide mineral from mexico. The specimens are in a massive form, meaning the crystals are too small to see any crystal habit. However, the specimens still exhibit a metallic lustre. Available in various sizes.
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Chalcocite specimens from Mexico. Chalcocite is a silver coloured mineral specimen with a metallic lustre and in the case of these pieces, a crystalline massive form. It is a copper sulphide mineral, making it a major source for copper ore, with the name actually being derived from the Greek word ‘khalkos’, meaning copper. Easily recognisable by its metallic appearance, it is actually quite soft,coming in at 2 to 3 on the Mohs scale of hardness index, meaning it can be scratched with just your finger nail. Chalcocite crystals tend to have an orthorhombic habit, but due to these specimens being a massive form, the crystals are too fine to see with out the aid of magnification. The mineral has been mined for centuries due to the fact that it is one of the best copper ores, with up to 80% of the material being able to be extracted as copper. Available in a range of sizes, the pieces will come supplied in a card tray or plastic magnifier box with an information label.
Weight | 200 g |
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Specimen Size | 1.5" x 1.5", 2" x 2", 4" x 3", Large Mag Box, Small Mag Box |
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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.
Sphalerite with chalcopyrite mineral specimens from Mexico, the minerals are both highly crystalline and exhibit excellent colouration an eye catching mix of silver and brass with metallic lustres which contrast each other. Available in two sizes only and supplied in a card tray with a label.
Out of 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.
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.
199 in stock
Blue lace agate mineral specimens of moderate size which clearly exhibit alternating bands of blue and white, the specimens come from Botswana and are excellent grade with minimal matrix on them. Formed through volcanic processes and the deposition of silica compounds in igneous rocks, these minerals are both important educationally and calming to look at.
Out of stock
Sulphur mineral specimens (also spelt sulfur) from Bolivia, these fine crystalline masses give off a pungent odour as expected of this mineral and have a pale yellow colouration to them. They formed in volcanic zones and are excellent for the more serious collector. Available in one size only and supplied in a card tray with a data label.
13 in stock
Specimens of white coloured Plagioclase Feldspar also known as a Albite-Anorthite Series mineral. The specimens come from Osedalen, Southern Norway and are supplied in a 2″x2″ 3″x2″ 4″x3″ card tray with an information label.
Out of stock
Halite mineral specimens from the Boulby mine in Redcar, North Yorkshire, UK. Halite is a salt mineral and has a cubic crystal system and vitreous lustre, these specimens are rough and available in various sizes, suitable for educational use, supplied in a card tray with a label.
30 in stock
Native copper specimens which have been smelted and slightly polished making them smooth to touch and enhancing their metallic lustre, these copper specimens were obtained from the smelting process of copper from the famous Keweenaw native copper ore deposits of Michigan. U.S.A.
Out of stock
Cleavelandite mineral specimens available in various sizes, a variation of albite, it is pale green or an off white colour, these pieces come from Evje in Southern Norway and exhibit a massive form of cleavelandite. Specimens may also come with accessory minerals such as smokey quartz or other feldspars.
Out of stock
Cut ulexite mineral specimens from California, USA. A mineral similar to gypsum, ulexite is able to transmit light through its long axis, meaning if placed above an image or text, will transmit it to the samples surface as an image. Hence the name TV rock, excellent for children, these pieces are available in several sizes and will come supplied in a card tray with an information label.
Pyrtic crystal cubes from Spain, depicting excellently the cubic crystal form that pyrite forms in. These samples exhibit the brassy colouration and metallic lustre expected from pyrite and are available in two sizes, 1 cm and 2 cm cubes, supplied in a polythene bags with a data label.
Out of stock
Massive specular hematite from Brazil, black colouration and metallic lustre which gives the crystals a sparkling appearance. These particular specimens are of specularite crystals in a massive form, therefore the samples have a highly crystalline texture. They come from Brazil and give off a metallic shimmer when held under certain lighting. Available in various sizes and supplied in card tray with an information label.
Magnesite mineral specimens from Greece, the samples are an off white colour and exhibit a somewhat botryoidal texture, formed around ultramafic rocks and metamorphic zones, these specimens are limited and will come supplied in a card tray with a data label.
Rhodolite garnets in quartz and mica schist matrix from Southern Norway exhibiting bright vibrant pink coloured garnets in a white quartz and metallic grey mica schist with a start contrast of colours, these minerals specimens are available in 3 sizes and come supplied in a card tray with a label.
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.
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