- “Bringing The Past, Into the Future”
- +44 (0) 1204 388754
PRODUCTS BY WEIGHT
BOX SETS
PLASTIC DISPLAY PRODUCTS
PRODUCTS BY WEIGHT
BOX SETS
PLASTIC DISPLAY PRODUCTS
£2.25 – £3.50 ex VAT
Biotite mica mineral specimens from Baluchistan, Pakistan available in moderately thick laminar sheets, as expected of this mineral, the samples exhibit a black colouration with a dull lustre. They serves as excellent examples of phyllosilicate minerals for collectors or educational use, with the pieces coming supplied in a labelled card tray.
We ship to all 50 states, Washington DC.
All orders are shipped with a UPS tracking number.
Always free shipping for orders over US $200.
During sale periods and promotions the delivery time may be longer than normal.
Elessi will accept exchanges and returns of unworn and unwashed garments within 30 days of the date of purchase (14 days during the sales period), on presentation of the original till receipt at any store where the corresponding collection is available within the country of purchase.
Your return will usually be processed within a week to a week and a half. We’ll send you a Return Notification email to notify you once the return has been completed.
Please allow 1-3 business days for refunds to be received to the original form of payment once the return has been processed.
Give us a shout if you have any other questions and/or concerns.
Email: contact@mydomain.com
Phone: +1 (23) 456 789
Biotite mica is a black, platy mineral which forms in sheets, it belongs to the mica group of minerals which also includes muscovite, phlogopite and lepidolite micas. Being a common phyllosilicate mineral, it is also found in many rocks, particularly of igneous and metamorphic origin, such as mica schist, gneisses and granites. The crystal system of mica in general is monoclinic and like other mica minerals, biotite has a perfect basal cleavage and consists of flexible sheets or lamellae, which easily flake off, with tabular to prismatic crystals. For this reason, mica is used in the oil drilling process, particularly in the drilling fluid, where it acts to prevent loss of circulation and as a sealant. When micas are found in their crystal sheet form, it is often referred to as “books” as it resembles their many pages. These mineral samples of biotite mica come from Baluchistan, Pakistan and are supplied in labelled card trays and are available in two sizes.
Weight | 180 g |
---|---|
Specimen Size | 2" x 2", 3" x 2" |
|
|
0% |
|
|
0% |
|
|
0% |
|
|
0% |
|
|
0% |
Pyrite cubic crystals in massive biotite mica, the pyrite crystals are well formed with the cubic form being clearly visible, as expected, the they also exhibit the yellow brassy colouration and metallic lustre expected from this mineral. The crystals are within a massive biotite mica matrix which is pure black with a vitreous lustre. This vivid contract in colours excellently highlights the brassy coloured pyrite crystals and makes for an excellent specimen to add to any mineral collection. The samples were collected by staff some years ago and come form southern Norway and is available in various sizes and come supplied in a card tray with an information label.
These specimens were collected from an old apatite mine in southern Norway. Specimens have a brown coppery colour and are supplied in a 2″x2″ 3″x2″ 4″x3″ card tray with label.
95 in stock
Muscovite mica sheets from Brazil, an excellent mineral specimen, especially for educational use as it depicts the basal cleavage perfectly, so thin are these sheet, that even when layered, they are still transparent. They have an off brown or pink hue and some impurities. Sizes vary as do shapes, each piece will come supplied loose with an information label.
12 in stock
Specimens of Biotite Mica, collected from Pakistan. Biotite Mica is a black, platy mineral that forms in sheets. It is a major rock forming mineral, especially in rocks of igneous or metamorphic origin. Specimens come in lots of 1kg, in a heavy duty polythene bag with an information label. Pieces come in various sizes.
35 in stock
Muscovite mica sheets from Iveland, Southern Norway, specimens depict the basal cleavage of this mineral excellently as well as it’s elasticity, sometimes being referred to as ‘books’ of mica sheets. These samples were collected by staff from Norway, they have a vitreous lustre and are available in various sizes, all pieces supplied in a card tray with an information label.
Biotite granite thin section exhibiting abundant biotite crystals within a typical granite crystal mass. These thin sections supplement the hand specimens nicely and allow the crystallisation history of the rock to be interpreted.
We provide a full range of igneous, sedimentary, metamorphic and mineral thin sections. Click here to view them. Should you require a microscope, they can be found here.
6 in stock
Lepidolite mica mineral specimens exhibiting a fine crystalline and granular form as opposed to a single sheet. These samples come from Zimbabwe and though are massive, still exhibit a lilac colouration and metallic lustre, available in various sizes and supplied in a card tray with a data label.
50 in stock
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
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.
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.
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
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.
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.
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
Pyrite is a well known and common mineral found around the world, commonly known as fools gold, it has a brassy yellow colour and metallic lustre, most pyrite people will see will likely be pyrite crystal beds or chunks. These specimens are individual cubes of pyrite which demonstrate the signature cubic crystal structure. These samples are from Spain and are available in 2 sizes: 1 cm and 2 cm cubes and come supplied in a polythene bag with an information label.
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.
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.
Milky quartz mineral specimens from Norway, with a pale white colouration, hence the name, sometimes also known as white quartz, snow quartz or simply quartz. These particular samples were collected by staff from Iveland, Norway. This locality is also where we collected the smokey quartz from. It is in a massive form and has a very fine crystalline texture, this also results in it sometimes being sharp, so caution is advised when handling these samples. It is available in various sizes and supplied in a 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.
Reviews
There are no reviews yet.