Petrography

Our basic geological collection consists of five sturdy plastic boxes divided into compartments,containing a total of 50 specimens covering the following topics:Minerals (talc, limonite, fluorite, calcite, pyrite, magnetite, hematite, quartz,mica, feldspar)Fossils (ammonite, wood, gastropod, crinoid stalk segment, coral, shark tooth,brachiopod, mammoth bone fragment, belemnite, sea urchin)Sedimentary rocks (loess, sandstone, flint, lignite, limestone, conglomerate,clay, shale, travertine, gypsum)Metamorphic rocks (chlorite schist, quartzite, mica schist, serpentinite,marble, gneiss, phyllite, amphibolite, granulite, eclogite)Volcanic & igneous rocks (slag, pumice, gabbro, tuff, rhyolite, diorite, granite,basalt, obsidian, pegmatite)The collection pieces are labeled and numbered according to an enclosed sheet in German and English.This collection is only available as a set!Size per piece: approx. 2 x 2 cm Fossils: approx. 1–3 cmDue to technical reasons, colors in product photos may vary slightly from those of the original piece.Our images are for reference only; upon purchase, you will receive a specimen of comparable quality.

10 rocksSpecimen: 60 x 90 mmsorted in collection boxes, including wooden boxThis 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.The photo serves as an example; upon purchase, you will receive a collection of equivalent quality.

10 rocks Samples: 90 x 120 mmsorted in collection boxesincluding wooden boxThis collection of 10 rocks comprises the most important examples of igneous, sedimentary, and metamorphic rocks: granite, gabbro, trachyte, basalt, diabase, tuff, sandstone, limestone, clay shale, and biotite gneiss.Each specimen is labeled with its exact name, age, and locality. A system-bloc film covers the respective 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 contents is included with each collection.The photo is for illustrative purposes only; upon purchase, you will receive a collection of equivalent quality.This collection is handmade at our company in Bonn.

20 igneous rocksSpecimen size: 60x90 mmarranged in collection boxesincluding wooden boxOur range of systematic rock collections includes all sizes, from small to large educational collections, providing the foundation for both introductory and advanced petrography courses.This collection includes:Igneous (e.g., pegmatite, granite, granodiorite, syenite, plagioclasites, feldspathic rocks, mafic rocks) and volcanic rocks (e.g., rhyolite, trachyte, latite, basalt, porphyry, selbergite, nephelinite, and pyroclastic rocks).The specimens are provided with labels indicating their exact name, age, and locality. A protective film covers each label to prevent scratching. All of the rocks are numbered so they can be easily re-identified if one is misplaced.The rocks in this collection are delivered in system-bloc collection boxes, which are arranged in a wooden crate.A detailed list of contents is included with each collection.The photo serves as an example; you will receive a collection of equivalent quality.This collection is handcrafted at Krantz in Bonn.

20 igneous rocksSample pieces: 90x120 mmSorted into collection boxes and delivered in a wooden caseOur range of systematic rock collections includes many options,from small to large educational collections, covering the basics for bothbeginner and advanced petrography courses.This collection includes:igneous rocks (e.g., pegmatite, granite, granodiorite, syenite, plagioclase rocks,feldspar rocks, mafic rocks)volcanic rocks (e.g., rhyolites, trachytes, latites, basalts, porphyrites, selbergites,nephelinites, and pyroclastites)The specimens are provided with labels indicating their exact name, age, and location. A protective film covers each label to prevent scratching. The rocks are numbered so they can be easily re-identified in case one is misplaced. This collection's specimens are delivered in System-bloc collection boxes, which are arranged in a wooden case.A detailed list of contents is included with each collection.The photo is for reference purposes; you will receive a collection of equivalent quality. All our collections are handcrafted in-house at Krantz, Bonn.

20 metamorphic rocksSpecimens: 60x90 mmSorted into collection boxes and delivered in a wooden caseWe offer a wide variety of systematic rock collections. From small to large educational collections, we can provide the basis for both introductory and advanced petrography courses.This collection includes:contact rocks (e.g. fritted sandstone, fruit shale, chiastolite shale, hornfels, contact limestone)crystalline schists (e.g. gneiss, granulite, mica schist, phyllite, chlorite schist, talc schist, amphibolite & pyroxene, serpentinite, marble)All specimens are labeled with the exact name, age and locality. A film is placed over each label to prevent scratching. The rocks are numbered making it easy to identify them should one be misplaced. This collection is supplied in system-bloc collectors' boxes, which are arranged in a wooden case.A detailed list of contents is included with each collection.The photo serves as an example illustration, you will receive a collection of equivalent quality. All our collections are hand-crafted in-house at Krantz, Bonn.

20 metamorphic rockshand specimens: 90x120 mmassembled in collectors' boxes and delivered in a wooden case.In our range of systematic rock collections we offer all varieties from small to large educational collections, providing the basis for petrographic beginner and advanced courses.This collection includes:contact rocks (e.g. fritted sandstone, fruit shale, chiastolite shale, hornfels, contact limestone)crystalline schists (e.g. gneiss, granulite, mica schist, phyllite, chlorite schist, talc schist, amphibolite & pyroxene, serpentinite, marble)Every hand piece is labeled with its exact name, age and locality. A film placed over each label prevents scratching. A numbering system ensures that rocks can be easily identified if they are misplaced. This collection is supplied in system-bloc collection boxes, which are arranged in a wooden case with hinged lid. A detailed list of contents is included with each collection.The photo serves as an example illustration, you will receive a collection of equivalent quality. All of our collections are hand-crafted at our premises in Bonn.

20 sedimentary rocksSpecimens: 60x90 mmarranged in collection boxes, packed in a wooden case.Our range of systematic rock collections includes everything from small to large educational collections, providing the foundation for both introductory and advanced petrography courses.This collection includes:Conglomerates and breccias – Psephites (e.g., quartz conglomerate, breccia)Sandstones – Psammites (e.g., sand, sandstone, quartzite)Silt and clay rocks – Pelites (e.g., clay, oil shale, loess)Carbonate rocks (e.g., limestone, chalk)Sediments (e.g., salt rocks, siliceous sediments such as flint, sedimentary phosphate rocks, residual rocks such as bauxite and coal)The samples are labelled with tags indicating the exact name, age, and locality. A protective film covers each label to prevent scratches. All rocks are numbered so they can be easily re-identified if one is misplaced. The collection is delivered in system-bloc collection boxes arranged inside a wooden crate.A detailed list of contents is included with every collection.The photo is for illustrative purposes only; you will receive a collection of equivalent quality. All of our collections are hand-crafted at the Krantz premises in Bonn.

20 sedimentary rockshand specimens: 90x120 mmassembled in collectors' boxes, delivered in a wooden case.Our range of systematic rock collections includes everything from small to large educational collections, providing the foundation for both introductory and advanced petrography courses.This collection contains:conglomerates and breccias - psephites (e.g. quartz conglomerate, breccia)sandstones - psammites (e.g. sand, sandstone, quartzite)silt & clay rocks - pelites (e.g. clay, oil shale, loess)carbonate rocks (e.g. limestone, chalk)sediments (e.g. salt rocks, siliceous sediments such as flint, sedimentary phosphate rocks, residual rocks such as bauxites and coal)The specimensare labelled with tags indicating the exact name, age, and locality. A protective film covers each label to prevent scratches. The rocks are numbered so they can be easily re-identified if one is misplaced. The collection is delivered in system-bloc collection boxes arranged inside a wooden crate.A detailed list of contents is included with every collection.The photo serves as an example illustration, you will receive a collection of equivalent quality.All of our collections are handcrafted at our premises in Bonn.

The collection is delivered in a sturdy, compartmentalized plastic box. The pieces of approx. 20x20 mm are numbered according to an explanatory contents list.

30 mineralshandpiece: 60 x 60 mmsorted in collection boxesincluding wooden boxThis collection presents 30 of the most important minerals involved in rock formation, as described in standard works of petrography. It is therefore an indispensable basis for introductory petrography classes.Contents: quartz, 2 feldspars, 2 feldspar representatives, 2 representatives of the sodalite group, 4 pyroxenes, 4 amphiboles, olivine, 4 mica, kaolin, 3 carbonates, 6 minor aggregates (including heavy minerals).The hand specimens are labeled with the exact name, age and locality. A film is placed over each label to prevent scratching. The minerals are numbered so that they can be easily identified again if one is misplaced.The pieces in the collection are supplied in system-bloc collection boxes, which are arranged in sequence in a wooden box. A detailed list of contents is included with each collection.

Large collection of polished ore sectionsSpecimens: Ø 22 mm eachDelivery: including Micromount boxes and wooden caseThe ore samples are embedded in clear polyester resin and polished on one side. All specimens have a diameter of 22 mm. They are numbered, labeled, and presented in transparent plastic containers.Supplied in a wooden case with a detailed inventory list.Contents include: copper, bismuth, sphalerite, chalcopyrite, enargite, cinnabar, antimonite,nickel, galena, covellite, stromeyerite, pyrite, marcasite, skutterudite, magnetite, franklinite,hematite, goethitePlease understand that the production of polished ore samples by hand takes a certain amount of time!

This collection was created to explain basic petrographic terms. It contains twenty typical representatives of igneous, sedimentary and metamorphic rocks. Distributed in several copies among the students, this inexpensive collection offers the best conditions for illustrative teaching.The pieces are numbered according to an explanatory list of contents.Contents: 20 rocksSize: approx. 2 x 2 cm eachSupplied in a durable plastic box.Colors in product photos may differ slightly from those of the original product due to technical reasons.Our pictures are for reference only, when purchasing you will receive a piece of equivalent quality.

20 Oresaverage size: 45x60 mmin collector's boxesstored in a wooden crateOur small ore collection contains 20 of the most important raw materials used in the production of pure metals and alloys. It features the most common iron and steel refining ores as well as Cu, Pb, Zn, and Al ores.High-quality specimens in typical formation. Each collection comes with an explanatory booklet that lists the chemical composition, global deposits, and areas of application.The specimens are numbered and labeled. They are delivered in ‘system-bloc’ collection boxes, stored in a wooden crate.

20 oreshandpieces: 60 x 90 mmin collection boxesThe small ore collection contains 20 of the most important basic materials for the production of pure metals and alloys. They are the most common iron and steel refiner ores as well as Cu, Pb, Zn and Al ores.Rich specimens in typical formation throughout. Each collection comes with an explanatory booklet giving chemical composition, worldwide occurrences and applications. The specimens are numbered and provided with labels. They are supplied in collection boxes.

20 rock forming mineralsin plastic collector's boxHandpiece: approx. 20 x 20 mmContains: Quartz, microcline, albite, leucite, sodalite, diopside, augite, actinolite, hornblende, olivine, muscovite, biotite, calcite, magnesite, andalusite, sillimanite, disthene, staurolite, epidote and garnet. The collections come in sturdy compartmented plastic boxes. The pieces, measuring about 2 x 2 cm, are numbered according to an explanatory contents list.This collection can also be combined with P05.

10 rock-forming minerals30 rocksHand pieces: approx. 20 x 20 mmSupplied in two plastic collector's boxes.With the combination of 10 rock-forming minerals and 30 rocks, this collection explains the most important aspects of petrography and allows the student to work independently on initial rock identification exercises.An affordable collection, e.g. for use in the classroom.The approximately 2 x 2 cm pieces are numbered according to an explanatory list of contents.Colors in product photos may differ slightly from those of the original product for technical reasons.Our pictures are for reference only, when purchasing you will receive a piece of equivalent quality.

A collection compiled from lecture notes summarizing the major rock types.With 63 igneous, 50 sedimentary and 37 metamorphic rocks (minor changes possible). Our range offers all gradients of systematic rock collections from small to large teaching collections, so that the foundation for petrographic beginners as well as for advanced students can be easily obtained here. The collections are divided into igneous, sedimentary, and metamorphic rocks and are arranged within these groups according to modern systematics. The hand specimens are numbered and have labels indicating the exact name and site of discovery. They are supplied in system-bloc collection boxes. A detailed contents list is included with each collection.