Stratigraphic Collection: 20 rocks (60x90mm)

20 rocksstratigraphically arrangedSpecimens: 90 x 120 mmsorted into collection boxes, delivered in a wooden case.In this collection, the evolutionary history of our planet is revealed through typical rocks from all geological formations. They bear witness to periods of increased volcanic or tectonic activity, vast oceanic expanses and enormous landmasses, climate changes, and tell the story of the evolution of life on Earth.Each specimen is labeled with a precise description, as well as its age and place of discovery. A protective film covers each label to shield it from scratches.All rocks are numbered so they can be easily re-identified if one is ever misplaced. The collection is delivered sorted into system-bloc collection boxes, which are stored in a wooden crate.A detailed list of contents is included with every collection.Our collections are handmade in our workshop in Bonn.Please note that rocks are natural products and no two piecesare ever exactly alike.Due to technical limitations, the colors on your screen may differ from those of the original pieces.Our images are for illustrative purposes; when you purchase, you will receive a collection of equivalent quality.

20 thin sections of 20 rocks,stratigraphically arranged,accompanying to the rock collections G40 (small pieces) / G41 (bigger specimens)Size of thin section: 28 x 48 mmMatching thin sections are available for all geological collections. The slides are 28 x 48 mm and have cover slips. They are numbered and have adhesive labels indicating the exact name as well as the age and location of discovery. They are supplied in a special thin section case.A detailed contents list is included with each collection.

10 rocksSpecimen size: 60 x 90 mmsorted in System-bloc collection boxes, including wooden caseThis collection of 10 rocks features the most important examples of igneous, sedimentary, and metamorphic rocks:granite, gabbro, trachyte, basalt, diabase, tuff, sandstone, limestone, argillaceous schist, and biotite gneiss.Each specimen is labeled with its name, age, and locality. A system-bloc film covers each label to prevent scratching.The rocks are numbered to allow for easy re-identification in case a specimen is misplaced.The pieces in the collection are delivered in system-bloc collection boxes,which are in turn arranged in a wooden case. A detailed list of contentsis included with each collection.Our collections are handcrafted in-house.Please note that stones are natural products, and no two pieces are exactly alike.Due to technical limitations, the colors in product photos may vary slightly from those of the actual item.Our images are for reference only; when you make a purchase, you will receive a collection of equivalent quality.

20 rocksspecimen size: 90 x 120 mmsupplied in System-bloc collection boxes, including wooden case.Our range includes many types of didactic collections suitable as reference material for petrographic courses across all educational levels.This collection is divided into igneous, sedimentary, and metamorphic rocks, which are arranged within these groups according to modern taxonomy. It includes, for example, the following rocks:granites, syenites, plagioclases, mafic rocks, rhyolites, trachytes, basalts, selbergites,tephrites, psephites, psammites, pelites, chemical and organic rocks,such as dolomite, anhydrite, and limestones. It also includes metamorphic rockssuch as marble, gneiss, and mica schist.Each specimen is labeled with its exact name, age, and locality. A System-bloc film is placed over each label to prevent scratches or staining.The rocks are numbered so they can be easily re-identified if one is removed or misplaced.The specimens of this collection are delivered in System-bloc collection boxes, which are arranged in order inside a wooden case. A detailed list of contents is included with each collection.Our collections are all handcrafted at our premises in Bonn.Please note that rocks are natural products and no two pieces ever look exactly alike.Due to technical limitations, colors in product photos may vary slightly from those of the original piece.Our images serve as a reference; when you purchase a collection, you will receive one of equivalent quality.