TECH CUT Rocks and Minerals

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...

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 ...

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 ...

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...

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...

BIOTITE GNEISS | This foliated metamorphic rock usually forms at convergent plate boundaries, and recrystallizes with immense heat and pressure GR...

BIOTITE GNEISS | This foliated metamorphic rock usually forms at convergent plate boundaries, and recrystallizes with immense heat and pressure GR...

BIOTITE MICA | Found within igneous and metamorphic rocks. Biotite mica's sheet like appearance and glassy luster make this mineral easy to identi...

BIOTITE MICA | Found within igneous and metamorphic rocks. Biotite mica's sheet like appearance and glassy luster make this mineral easy to identi...

BITUMINOUS COAL | Coal is formed within anoxic environments from compressed organic matter, and a worldwide source of fuel. Its vitreous sheen mak...

BITUMINOUS COAL | Coal is formed within anoxic environments from compressed organic matter, and a worldwide source of fuel. Its vitreous sheen mak...

CALCITE | Calcite is made up of calcium carbonate. It can grow into rocks, animal shells, chalk, & translucent, rhombic minerals GREAT FOR GEO...

CALCITE | Calcite is made up of calcium carbonate. It can grow into rocks, animal shells, chalk, & translucent, rhombic minerals GREAT FOR GEO...

CARBONACEOUS SHALE | Shale is formed from the cementation and lithification of very small grains of rock, commonly mud or clay. The black color of...

CARBONACEOUS SHALE | Shale is formed from the cementation and lithification of very small grains of rock, commonly mud or clay. The black color of...

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! ...

DIORITE | The minerals within diorite can be readily identified due to their large size, and by comparing the relative abundance of each mineral, ...

DIORITE | The minerals within diorite can be readily identified due to their large size, and by comparing the relative abundance of each mineral, ...

FINE WHITE MARBLE | Formed from limestone, this high pressure, low heat alteration leads to a large crystalline rock. Heavily mined for architectu...

FINE WHITE MARBLE | Formed from limestone, this high pressure, low heat alteration leads to a large crystalline rock. Heavily mined for architectu...

FLUORITE | Fluorite can be transparent or come in a variety of colors, such as purple, green & blue. Fluorite is a common mineral in both carb...

FLUORITE | Fluorite can be transparent or come in a variety of colors, such as purple, green & blue. Fluorite is a common mineral in both carb...

GABBRO | Gabbro is formed within magma chambers, deep within the earth. The chambers hold iron-rich rock melt, too heavy to reach the surface. As ...

GABBRO | Gabbro is formed within magma chambers, deep within the earth. The chambers hold iron-rich rock melt, too heavy to reach the surface. As ...

GALENA | Galena grows in beautiful metallic cubes. Often refined as lead ore, galena can also be used to teach students about a mineral's luster, ...

GALENA | Galena grows in beautiful metallic cubes. Often refined as lead ore, galena can also be used to teach students about a mineral's luster, ...

GYPSUM | A sulfate mineral that often forms from evaporating lakes in what is known as an evaporite deposit. Crystals grow into soft, wide sheets,...

GYPSUM | A sulfate mineral that often forms from evaporating lakes in what is known as an evaporite deposit. Crystals grow into soft, wide sheets,...

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

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

HEMATITE | Hematite is made up of iron and oxygen, giving it a distinct red, earthy color. Although hematite can form in a variety of appearances,...

HEMATITE | Hematite is made up of iron and oxygen, giving it a distinct red, earthy color. Although hematite can form in a variety of appearances,...

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

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

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 ...

MAGNETITE | Magnetite forms as an accessory mineral from an igneous melt. As it cools, the iron in its atomic structure becomes magnetized GREAT F...

MAGNETITE | Magnetite forms as an accessory mineral from an igneous melt. As it cools, the iron in its atomic structure becomes magnetized GREAT F...

MICROCLINE | One of the most common minerals in the earth's crust, feldspar has a variety of physical properties that make it a quintessential min...

MICROCLINE | One of the most common minerals in the earth's crust, feldspar has a variety of physical properties that make it a quintessential min...