Welcome to Geosec Slides
A resource for geologists, amateur and professional, to aid the study and identification of rocks minerals and fossils.
Thin Section Microscope Slides of Rocks and Fossils
Geosec specialises in the production and supply of thin section microscope slides used as one of the two main methods of rock classification (the other being chemical analysis). Viewing thin section slides enables the geologist to identify the constituent minerals and textures of the rock. This, with information gathered from the site of collection, provides evidence of its chemical composition and the manner of its creation.
The slides reveal fascinating and beautiful internal structures, opening a window to parts of our world normally invisible. View through a microscope a hidden universe of colours and shapes, spectacular and intriguing, even without specialist knowledge.
What is a Thin Section?
It is a slip of rock, mounted on a glass microscope slide, and ground very thin. 30 Microns is the ideal thickness. (A standard piece of paper is 100 microns thick) At this thickness virtually all rocks are transparent, and the individual minerals that make up the rock can be seen and identified. When viewed through a polarising filter interference colours can be seen, a similar effect to oil on water. This too is used as an aid to identification.
Study of thin sections is a part of nearly all higher level geology couses, and experience in mineral identification is gained by viewing as wide a range of thin sections as possible. Geosec offers a large selection of slides from localities worldwide.
*NEW* Panoramas *NEW*
We are pleased to offer a choice of two high quality panoramas of the Ardnamurchan Volcanic centre. Locally called the ‘Volcano’ or the ‘Crater’, neither of which is correct as it is the eroded remains of the magma chamber. It does look like a crater when one stands in the centre, surrounded by cliffs and hills nearly 200 meters high.
The panoramas are taken from hills on the southern (top image) and western edges respectively, and show the ‘crater’ rim and the inner rings for which the area is famous, plus some of the offshore islands. A larger view of one of the panoramas can be seen on the ‘About’ page of this website.
The prints are 30” by 10” aprox (76cm x 24.5cm) photographic prints with a satin finish, supplied rolled in a tube.
Geosec cannot supply frames, but a frame 88cm x 30cm may be purchased from Ikea for £12.59 at the time of writing, available in various finishes. Please note that the internal mount supplied with the frame is not the right size to fit the print… (Ikea ref. RIBBA)
Prices as follows;
1 to 4………………………….£7.45 each plus £2.00 postage
5 (or multiples of 5)…..£5.00 each plus £3.00 postage
20………………………………..£3.75 each plus £5.00 postage
To order please contact Geosec through the contact page, or see Geosec Slides ebay shop.