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Goethite mineral specimens from Morocco, the samples exhibit a black colouration with a high metallic lustre and a botryoidal formation, which makes the surface of the specimens appear ‘bubbly’. Excellent quality pieces with text book features suitable for collectors and schools, supplied in a card tray with a label.
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Goethite mineral specimens from Morocco, these samples have a black colouration as expected of this mineral as well as a high quality botryoidal crystal habit, where the surface of the samples appear like ‘bubbles’. Goethite is similar in chemical composition and structure to hematite except with a high metallic lustre, for this reason, the samples may look like they have been polished or sprayed with a coating but are completely natural. They will also give a deep dark red streak when used on a streak plate and is a little more denser than hematite. In the modern day, it is used as a source of iron ore, our samples are available in 3 optional sizes and comes supplied in a card tray with an information label.
Weight | 180 g |
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Specimen Size | 1.5" x 1.5", 2" x 2" |
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Beautiful acicular geothite crystals on fragments of quartz lined geode collected from Amerzgane, Ouarzazate, Morocco. These black needle like goethite crystals are of excellent quality and contrast beautifully against the lustrous white or smokey quartz. The opposing colours make these specimens all the more interesting to observe and the geode acts as natural protection for the fragile goethite crystals. Available in various sizes and supplied in a card tray with a label.
120 in stock
Hematite mineral specimens from Cumbria in the UK, showing partial botryoidal crystal habit and some fibrous habit. Despite this, the samples are text book examples, and exhibit a dense weight, deep red colouration and streak and a dull metallic lustre. Specimens are available in various sizes and come in a card tray with a label.
60 in stock
Iron and manganese mix collected from the Lecht Iron Mines of Tomintoul, Aberdeenshire. Specimens are supplied in either a white card tray with an information label attached ( various sizes available ) or a small magnification box . Suitable for geologists, collectors or those imply interested in mineralogy.
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.
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
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.
Specular hematite mineral specimens from Florence Mine, Egremont, Cumbria. They are on a massive hematite matrix, black in colour with a metallic lustre giving the samples a silver, shimmering appearance. The specularite has excellent but small anhedral crystal habits. Available in a range of sizes, the pieces will come supplied in a card tray with label.
Out of stock
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
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
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
Baryte mineral specimens, unusual samples collected from Foss mine in Scotland, they have a fine crystalline texture instead and are quite robust specimens. Pieces are off white in colour and may show a shimmer effect in certain lighting conditions. Available in various sizes, supplied in a card tray with an information label.
29 in stock
Baryte in cockscomb mass form exhibiting bladed crystals on a massive bed, these mineral specimens vary slightly in colour from orange and yellow to pink, they show excellent crystal detail, mined in Mibladen, Morocco, they are available in various sizes.
Milky quartz mineral specimens from Iveland, Norway, collected by staff, these samples have a fine crystalline texture and are in a massive form. Translucent, they have a pale grey, milky white colour and are sometimes known as snow quartz or simply quartz. Available in 3 sizes and supplied in a card tray with a label.
100 in stock
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.
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
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.
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