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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...

WHITE QUARTZITE | Quartzite is formed from sandstone that has been tightly compressed to the point where the clasts have recrystallized to form a ...

WHITE QUARTZITE | Quartzite is formed from sandstone that has been tightly compressed to the point where the clasts have recrystallized to form a ...

LODESTONE | This naturally magnetized mineral creates it's own magnetic field and can pick up small metal objects. Iron particles cover its surfac...

LODESTONE | This naturally magnetized mineral creates it's own magnetic field and can pick up small metal objects. Iron particles cover its surfac...

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...

LABRADORITE | Labradorite is a variety of plagioclase feldspar, intermediate between anorthite and albite. Notable about this species of feldspar ...

LABRADORITE | Labradorite is a variety of plagioclase feldspar, intermediate between anorthite and albite. Notable about this species of feldspar ...

GARNET | Garnet comes in a variety of colors & shapes - this specimen is a deep red color. Garnet forms under intense heat and pressure condit...

GARNET | Garnet comes in a variety of colors & shapes - this specimen is a deep red color. Garnet forms under intense heat and pressure condit...

DOLOMITE | Though similar to calcite, the inclusion of magnesium in the chemistry of Dolomite makes it a more robust & stable mineral GREAT FO...

DOLOMITE | Though similar to calcite, the inclusion of magnesium in the chemistry of Dolomite makes it a more robust & stable mineral GREAT FO...

CHLORITE | Chlorite is a metamorphic mineral that has undergone light alteration. During metasomatism, phyllosilicate minerals may become hydrated...

CHLORITE | Chlorite is a metamorphic mineral that has undergone light alteration. During metasomatism, phyllosilicate minerals may become hydrated...

CHERT | Sometimes referred to as flint, Chert is a sedimentary rock rich in silica GREAT FOR GEOLOGY CLASSROOMS | This specimen is perfect for tea...

CHERT | Sometimes referred to as flint, Chert is a sedimentary rock rich in silica GREAT FOR GEOLOGY CLASSROOMS | This specimen is perfect for tea...

CHALCOPYRITE | From the same family as fool's gold, Chalcopyrite is a yellow crystalline mineral consisting of a sulfide of copper and iron. It is...

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

APATITE | Apatite is one of the few common phosphate minerals. While often found as an accessory mineral in igneous rock, it is also found as conc...

APATITE | Apatite is one of the few common phosphate minerals. While often found as an accessory mineral in igneous rock, it is also found as conc...

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...

Crystalline desert rose sample measuring about 1.5-2" in diameter Despite its size, each rose weighs between 1 and 2 ounces, indicative of its rel...

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

3" specimen of native copper Twisted, wirelike shape betrays formation as a fracture-filling mineral Each sample of copper weighs between 2 and 3 ...

2"-2.5" sample of optical calcite, also known as Iceland Spar Optical calcite is birefringent, allowing it to split and transmit beams of light in...

Calcite septarian plate approximately 8" in diameter Septarian nodules have a carbonate center surrounded by cemented sediments of sand and mud Th...

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...

3" hand sample of galena, a lead ore Brilliant silver cubes exhibit galena's characteristic luster and cleavage Galena's high specific density mak...

Sample of crystalline pyrite up to 3" in length Each piece contains 10-20mm crystals that shine brilliantly in the light Bright, metallic luster g...

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...

Single-point, polished quartz crystal between 1.5" and 2" in length Each piece is crystal clear, and takes the euhedral hexagonal form of quartz F...

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

CONGLOMERATE | The large clasts in conglomerate indicate that the pieces of rock underwent a large amount of rolling, bouncing, and other weatheri...

AUGITE | A common rock-forming pyroxene mineral that forms as magma is cooling. It is an imperative sample for lessons on Bowen's reaction series ...

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

HALITE | Halite is commonly known as table salt. This soft, white to transparent mineral grows into cleavable cubes GREAT FOR GEOLOGY CLASSROOMS |...

BASALT | Basalt makes up a large majority of the earth's oceanic crust. Formed quickly from a magma that is rich in iron, basalt exhibits a dark c...

HORNBLENDE | Hornblende is part of a group of minerals known as amphiboles. These minerals are chemically and structurally similar to pyroxenes, b...

FOSSILIFEROUS LIMESTONE | This rock formed at the bottom of a marine environment through the compaction of deceased organic matter in a clay or si...

MICA SCHIST | A metamorphic rock that has undergone moderate levels of alteration, schist is good for demonstrating the effect of metamorphism on ...

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

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...

MUSCOVITE MICA | Muscovite mica is a mineral that forms from cooling magma. It forms in thin sheets that are individually weak, but comprehensivel...

FOSSILIFEROUS LIMESTONE | This rock formed at the bottom of a marine environment through the compaction of deceased organic matter in a clay or si...

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