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OBSIDIAN | Obsidian, also known as volcanic glass, forms from lava that cools almost immediately upon eruption, usually into water GREAT FOR GEOLO...

OLIVINE | Much of the earth's surface is covered in oceanic crust, of which olivine is a major component. With the highest crystallization tempera...

PERIDOTITE | Peridotite is an iron-rich ultramafic rock, with a chemistry that suggests genesis from a point deep within the crust, possibly as de...

PINK GRANITE | Commonly found as magmatic intrusions in the crust, granite forms slowly in shallow or evolved magma chambers. The large crystals a...

PORPHYRITIC GRANITE | Granite forms slowly in shallow or evolved magma chambers, and is also commonly found as magmatic intrusions in the crust. T...

PUMICE | Pumice is formed from the frothy lava that a volcanic explosion creates. As the frothy lava cools, it hardens as a light weight rock that...

PYRITE | Pyrite forms as hot water flows through fractures in subsurface rock. This deposition method allows pyrite to replace other minerals or f...

QUARTZ | One of the most abundant minerals on Earth. The tightly packed framework of silica tetrahedral that makes up this mineral gives it a high...

RED SANDSTONE | Sandstone is made up of well-sorted and well-rounded grains of quartz. This indicates that the clasts in the rocks have traveled a...

RHYOLITE | Rhyolite is an aphanitic felsic rock which forms during eruptions of thick, viscous magma. Often containing phenocrysts of felsic miner...

SCORIA | Scoria forms as spatter from bubbly, mafic lava is thrown into the air and cooled quickly. The crystallization happens so quickly that la...

SERPENTINITE | When clay- and aluminum-rich rock is altered by water from geothermal systems, serpentinite is liable to form. Often found in low-g...

SLATE | Slate is the result of the compression of shale, but is denser and retains the fissile properties, making for an interesting exercise when...

SOAPSTONE | Through the process of metasomatism, hot fluid infiltrates the atomic structure of other silicate minerals, altering them to form soap...

TRAVERTINE | & classification exercises. Travertine is a carbonate rock formed from gushing hot springs. The airy, porous material indicates a...

VOLCANIC TUFF | Dust & ash deposited during explosive volcanic eruptions can become compacted and lithified over time, forming large packages ...

WHITE SANDSTONE | White Sandstone is a recognizable sedimentary rock made up of well sorted and rounded grains of quartz, indicating that the clas...

Twelve streak plates Used to determine a mineral's color in powder form, or to identify the mineral content of a rock. Great for geology and earth...

12 PACK | Includes twelve streak plates. Great for group activities GREAT FOR GEOLOGY CLASSROOMS | Used to determine a mineral's color in powder f...

Fossil replica of a Paleozoic bivalve shell measuring approximately 1" (3cm) Fossil is made from a sturdy resin designed to last through heavy cla...

Fossil replica of an ammonite from the Mesozoic measuring approximately 1.5" (4cm) This fossil replica is made from a resin designed to last throu...

Fossil replica of a Mesozoic fish imprint measuring approximately 1.5"x3" (4x10cm) Replica is built from a sturdy resin designed to last through h...

BRECCIA | The large, angular clasts in breccia make it possible to confidently ascertain the depositional history of the rock GREAT FOR GEOLOGY CL...

Pack of six, muscovite mica samples. Each sample is approximately 1" (3cm) in size Useful for teaching students about variable hardness and cleav...

Grow your own crystals on the "bubble rocks" with a simple experiment Included are two samples of the bubble rock (a gray limestone) and instructi...

2"-2.5" specimen of chalcopyrite, altered to the brightly iridescent peacock ore Iron and copper in chalcopyrite oxidize under acidic conditions, ...

COARSE WHITE MARBLE | Marble is a metamorphic rock formed from limestone. The high-pressure, low-heat alteration leads to a massive crystalline ro...

Sample of crystalline pyrite up to 2" in length Each piece shines brilliantly on crystals around 2-10mm in size Bright, metallic luster gives pyri...

Albite sample approximately 1" (3cm) in size Used as a hardness standard of 6, and exhibits two planes of cleavage Perfect size for use in classro...

Albite sample approximately 1" (3cm) in size Used as a hardness standard of 6, and exhibits two planes of cleavage Perfect size for use in classro...

Amphibolite sample approximately 1" (3cm) in size Formed from further pressure and thermal alteration of hornblende, fusing and foliating ...

Twelve amphibolite samples approximately 1" (3cm) in size Formed from further pressure and thermal alteration of hornblende, fusing and fo...

Argillaceous shale sample approximately 1" (3cm) in size Small clast size indicates deposition in a low-energy environment such as a shallow lake ...

Pack of 12 Argillaceous shale samples approximately 1" (3cm) in size Small clast size indicates deposition in a low-energy environment such as a s...

Arkose sample approximately 1" (3cm) in size Small, angular grains indicate deposition in an ephemeral river system near to the clast sour...

Twelve arkose samples approximately 1" (3cm) I size Small, angular grains indicate deposition in an ephemeral river system near to the cla...

Augen gneiss sample approximately 1" (3cm) in size Ideal for students learning about differential stresses and foliation in metamorphic ro...

Twelve augen gneiss samples approximately 1" (3cm) in size Ideal for students learning about differential stresses and foliation in metamo...

Chalcopyrite sample approximately 1" (3cm) in size Exhibits fracture and has a brassy luster Perfect size for use in classroom identification labs...

Corundum sample approximately 1" (3cm) in size Great for studying mineral hardness and crystal habit - only diamond is harder! Perfect...

Twelve corundum samples approximately 1" (3cm) in size Great for studying mineral hardness and crystal habit - only diamond is harder! ...

Hornfels sample approximately 1" (3cm) in size Formed at the baked contact between an intruding igneous body and the surrounding rock ...

Hornfels sample approximately 1" (3cm) in size Formed at the baked contact between an intruding igneous body and the surrounding rock ...

Limonite sample approximately 1" (3cm) in size Rusty color indicative of ongoing oxidation Perfect size for use in classroom identification labs a...

Limonite sample approximately 1" (3cm) in size Rusty color indicative of ongoing oxidation Perfect size for use in classroom identification labs a...

Oligoclase sample approximately 1" (3cm) in size Standard hardness of 6, exhibits two planes of cleavage Perfect size for use in classroom identif...

Oligoclase sample approximately 1" (3cm) in size Standard hardness of 6, exhibits two planes of cleavage Perfect size for use in classroom identif...

Pegmatite sample approximately 1" (3cm) in size Igneous rock containing a large variety of crystal sizes Perfect size for use in classroom identif...