Eisco, Education, Education, Geology
-
This foliated metamorphic rock usually forms at convergent plate boundaries, and recrystallizes with immense heat and pressure Excellent for students learning about differential stresses and foliation in metamorphic rocks. This set of twelve samples is excellent for group study and examination …
-
Apatite is one of the few common phosphate minerals. While often found as an accessory mineral in igneous rock, it is also found as concretions or detrital clasts in sedimentary rocks With a standard Mohs hardness of 5, and it's relatively uncommon crystal habit, Apatite is excellent for…
-
The large clasts in conglomerate indicate that the pieces of rock underwent a large amount of rolling, bouncing, and other weathering to become round. This implies deposition in a river far from the source of the clasts Ideal for teaching students about rounding and sorting, as well as for…
-
Through the process of metasomatism, hot fluid infiltrates the atomic structure of other silicate minerals, altering them to form talc. Talc is at the bottom of the Mohs scale of hardness, and has a distinct soapy feel Ideal for identification & classification exercises. A great example for…
-
Phyllite is a good example of low-grade metamorphism from an easily recognizable parent rock. The fissile property of slate is retained, but has attained a glossy sheen and soapy feel more indicative of metamorphic material Ideal for identification & classification exercises. Demonstrates…
-
Oolitic limestone is a carbonate rock formed from the cementation of thousands of ooids. Ooids are tiny nodules formed from the accumulation of carbonate material around a nucleus. When cemented together and lithified, these ooids can form rock. Oolitic limestone forms in reef or lagoon…
-
Hematite is made up of iron and oxygen, giving it a distinct red, earthy color. Although hematite can form in a variety of appearances, this mineral is instantly recognized by the reddish brown streak it leaves behind when powdered Ideal for identification & classification exercises. Ideal for…
-
The large, angular clasts in breccia make it possible to confidently ascertain the depositional history of the rock Ideal for identification & classification exercises. This contrasts well with conglomerate, a very similar rock with clasts that have traveled a long ways from their provenance. This…
-
This rock formed at the bottom of a marine environment through the compaction of deceased organic matter in a clay or silt cement Ideal for identification & classification exercises, for studying fossils within whole rocks and sedimentary rocks. This set of six samples is excellent for group study…
-
Pack of 12 Limonite samples approximately 1" (3cm) in size Rusty color indicative of ongoing oxidation Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements Also known as goethite Specimens come in clear,…
-
Pack of 12 Hornfels samples approximately 1" (3cm) in size Formed at the baked contact between an intruding igneous body and the surrounding rock Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements Great…
-
Pack of 12 Argillaceous shale samples approximately 1" (3cm) in size Small clast size indicates deposition in a low-energy environment such as a shallow lake or slow-moving river Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science…
-
Sometimes referred to as flint, Chert is a sedimentary rock rich in silica This specimen is perfect for teaching geology students about the many forms of quartz, hardness, crystal habit, and fracture. This set of twelve samples is excellent for group study and examination Each specimen is…
-
The Mohs hardness test is a simple and useful way to identify minerals and assess their relative hardness. This kit includes everything you need to explore using Mohs hardness test to identify minerals The kit includes 1" pieces of nine different minerals, including Talc, Gypsum, Calcite,…
-
A fun way to explore the variety of techniques that geologists use to identify rocks and minerals Test mineral hardness, streak color, magnetic properties, appearance, and effervescence to identify different minerals and mineral content within rock specimens Includes seven essential tools -…
-
Pack of 12 Chlorite samples approximately 1" (3cm) in size Platy metamorphic mineral with a soapy feel Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements Forms when hot water alters the chemistry of an…
-
Pack of 12 Hornblende samples approximately 1" (3cm) in size Useful for students to study as an example of two-plane, non-perpendicular cleavage Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements Ideal for…
-
Though similar to calcite, the inclusion of magnesium in the chemistry of Dolomite makes it a more robust & stable mineral Ideal for learning about physical and chemical properties. Great for having students compare with calcite - a challenging but beneficial exercise. This set of twelve samples…
-
Quartzite is formed from sandstone that has been tightly compressed to the point where the clasts have recrystallized to form a new rock. This formation mechanism, coupled the inherent strength of quartz, makes quartzite a very durable rock. Useful in the classroom for lessons on metamorphic…
-
Obsidian, also known as volcanic glass, forms from lava that cools almost immediately upon eruption, usually into water Obsidian shares many physical properties with its major chemical component, quartz, despite looking dissimilar - great for classification exercises. This set of twelve samples is…
-
Calcite is made up of calcium carbonate. It can grow into rocks, animal shells, chalk, & translucent, rhombic minerals Being one of just a few minerals that is effervesce in acid, Calcite is great for demonstrating chemical reactions. This universally useful mineral can also be used to demonstrate…
-
Found within igneous and metamorphic rocks. Biotite mica's sheet like appearance and glassy luster make this mineral easy to identify Mica's thin and layered structure is perfect for demonstrating variable hardness and cleavage, physical properties of minerals, as well as Bowen's reaction series.…
-
Pack of 12 Gypsum samples approximately 1" (3cm) in size Great for learning about mineral hardness - gypsum is soft enough to be scratched by a fingernail Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements …
-
When clay- and aluminum-rich rock is altered by water from geothermal systems, serpentinite is liable to form. Often found in low-grade metamorphic areas, serpentinite is composed of hydrated silicate minerals, particularly phyllosilicates Ideal for identification & classification exercises.…
-
Pack of 12 Oligoclase samples approximately 1" (3cm) in size Standard hardness of 6, exhibits two planes of cleavage Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements Feldspar with high levels of sodium …
-
This specular variety of hematite takes the form of tiny, sparkling iron oxide crystals Perfect for demonstrations in mineral physical properties. This set of six samples is excellent for group study and examination Each specimen is selected and hand processed, ensuring each sample exhibits…
-
Slate is the result of the compression of shale, but is denser and retains the fissile properties, making for an interesting exercise when distinguishing between the two rocks Ideal for exercises in metamorphic rock identification due to its recognizable platy foliation. This set of twelve samples…
-
White Sandstone is a recognizable sedimentary rock made up of well sorted and rounded grains of quartz, indicating that the clasts in the rocks have traveled a long distance from their source and experienced heavy erosion along the way Perfect for lessons in identification and classification of…
-
Pack of 12 Arkose samples approximately 1" (3cm) in size Small, angular grains indicate deposition in an ephemeral river system near to the clast source Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements …
-
Sandstone is made up of well-sorted and well-rounded grains of quartz. This indicates that the clasts in the rocks have traveled a long distance from their source and were heavily eroded along the way. This sample is red due to the inclusion of iron in the chemical structure of the rock. This…
-
Labradorite is a variety of plagioclase feldspar, intermediate between anorthite and albite. Notable about this species of feldspar is its potential for iridescence Ideal for identification & classification exercises. Samples with clean crystal faces, when exposed to light, have a tendency to…
-
Muscovite mica is a mineral that forms from cooling magma. It forms in thin sheets that are individually weak, but comprehensively strong. Mica is a major component in a plethora of different rocks, including igneous, sedimentary, and metamorphic rocks Mica's thin and layered structure is perfect…