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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.
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Orthoclase feldspar is a well known mineral and a common constituent found in many igneous rocks. It has two cleavage planes, which are at right angles to one another, resulting in the crystals breaking into rhombic forms and is the reason for its naming, being derived form the ancient Greek wording for “straight fracture.” It is often pink in colour but can be white or pale grey. It is fairly hard at 6 – 6.5 on the Moh’s scale of hardness and has a vitreous lustre, which means it shines or reflects light. Orthoclase is commonly found in many granitic rocks, being one of the main constituent minerals, the other two being quartz and mica. It is also common in felsic rocks such as rhyolite. The crystals can vary in size and the largest one discovered to date was found in the Ural mountains, Russia, measured 10 x 10 x 4 meters and weight around 100 tons. These particular mineral samples were collected by staff from Evje, Norway and are available in various sizes, each sample will come supplied in a card tray with an information label.
Weight | 180 g |
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Specimen Size | 2" x 2", 3" x 2", 4" x 3" |
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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
1 kilo of orthoclase feldspar mineral specimens from Norway. The mineral specimens are a pale pink colour, and show the typical cubic cleavage expected from orthoclase feldspar. Ideal for schools, educational and teaching use, specimens supplied are a range of sizes and come in a strong polythene bag by kilo weight.
12 in stock
Big feldspar gabbro thin section exhibiting exactly what its name describes, feldspar crystals much larger than those present in the ordinary gabbro which we supply. Characteristic twinning in the plagioclase and the bright colours of the pyroxene make for an attractive thin section, perfect for educational use.
Out of stock
Hand size specimens of the big feldspar variant of gabbro, samples were collected from Carrock fell, Cumbria, UK and can be supplied in 3 sizes.
75 in stock
Silverline hammer holster, suitable for use with a variety of strike tools and geological hammers. The holster is made from heavy duty suede leather on which a steel cradle is attached, the cradle has a swing point, this allows the hammer to move and tilt according to your body position, ensuring that what ever angle you are at, whether standing, leaning or laying down, the hammer will remain upright at all times. Slots at the top of the holster allow you to attach it to your belt, keeping your tool by your side at all times. Suitable for use with our range of geological hammers which can be found here.
24 in stock
Estwing produced nylon hammer holster produced from industrial grade nylon which is tough for use in rugged conditions. This holster is suitable for use with Estwing pointed tip range of geological hammers and rock pick, with the head sitting securley in a pouch which attaches to your belt.
3 in stock
Iceland spar mineral specimens from Santa Eulalia, Chihuahua, Mexico, samples are crystal clear, exhibit perfect rhombic shape and excellent double refraction. They are available in 2 sizes only and will come supplied in a card tray with a label.
20 in stock
Plastic plate stands which are ideal for holding mainly flat items, such as plates, agate slices and other cut and polished mineral slabs. However, other items fit on them just as well, the parts come in two pieces and twist together making a single, robust clear stand. These stands are small and measure 50 mm tall with a 70 x 40 mm base.
Dolomite crystal beds, pink in colour form Morocco, the presence of manganese results in a pale pink hue, these mineral specimens also have larger crystals than the UK material and are higher quality. Available in various optional sizes, supplied in tray with a data label.
50 in stock
Pea Grit (pisolite) is the name given to a Middle Jurassic limestone which is characterised by its large spherical grains or Pisoids, similar to ooliths. Specimens are supplied with a labelled card tray.
6 in stock
Specification:
* Waterproof
* Map area: 265 x 265 mm
* Neckband included
* Winter use -20 degrees.
* Material: Polyamid / Transparent TPU
Out of stock
15 cell section geological specimen storage boxes, made from thick robust card which will not split or warp over time.Each box contains a plastic insert which allows you to store up to 15 samples of rocks, fossils, minerals or gemstones in. The cells are 55 x 55 mm and comes with a sturdy lid with a blue colour.
Green jasper 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.
97 in stock
Kraft sample bags are made using the Kraft pulping process resulting thick paper, making the envelopes strong and ideal for storing geological field specimens and geochemical soil samples. These are wet strength bags and can be used to store wet or dry geochemical samples and are 5″ x 10″ in size (125 mm x 250 mm).
Out of stock
Gypsum satin spar mineral specimens from Morocco, which are a pearly white colour composed of high quality fibrous crystals which are long and orientated in the same direction giving the samples a silky lustre. These pieces are available in various optional sizes, supplied in a card tray with a label.
435 in stock
Round plastic tubs or pots made, clear and easily seen through, they are ideal for the safe storage of many small items such as gemstones, plants, sediments, soil, hobby items and more. They measure 46 mm in diameter and are 23 mm high. Supplied with a tight snap shut lid.
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