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Specimens of goethite on baryte crystals from Taffs Well, Wales, UK. Specimens are supplied in white card trays or in perspex magnifier boxes and come with an information label. These are must have samples for any British mineral collector.
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Specimens of goethite on baryte crystals from Taffs Well, Wales, UK. These samples of goethite have a black colouration as is typical for this mineral species and a botyroidal crystal habit. These crystals have grown upon baryte, the baryte crystals show a bladed or massive habit. Some pieces have small amounts of calcite present as well as quartz crystals, some of which have a yellow colouration. Specimens are supplied in white card trays or in perspex magnifier boxes and come with an information label. These are must have samples for any British mineral collector.
Weight | 100 g |
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Specimen Size | 1.5" Magnifier Box, 1.5" x 1.5", 2" x 2", 3" x 2", 4" x 3" |
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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
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
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
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
Baryte mineral specimens collected form Cumbria, 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.
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.
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.
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.
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.
Stunning red quartz ( Hematoide ) over a baryte matrix collected from Jebel Saghro in Morocco. This unique variety of quartz owes its red colour to very fine hematite inclusions which have become incorporated into the quartz mass
Out of stock
Salt Pseudomorphs on a limy marl matrix collected from the Triassic Aust Cliff in Avon. Numerous cubic imprints can be identified on the limy marl substrate of these specimens; they serve as interesting educational pieces.
20 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
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.
Out of stock
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