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 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 sample is red due to the inclusion of iron in the chemical structure of the rock
GREAT FOR GEOLOGY CLASSROOMS | Ideal for students to compare with white sandstone to understand physical expression of chemical differences
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Red Slate Metamorphic Rock Specimen - Approx. 1"
RED SLATE | Slate is very lightly metamorphosed and well-foliated. This appearance often makes it difficult to distinguish from its parent rock, shale. The two can be told apart by the difference in pitch when struck
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Slate is perfect for lessons on metamorphic rocks and alteration
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Rochester, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Red Slate Metamorphic Rock Specimen - Hand Sample - Approx. 3"
RED SLATE | Slate is very lightly metamorphosed and well-foliated. This appearance often makes it difficult to distinguish from its parent rock, shale. The two can be told apart by the difference in pitch when struck
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Slate is perfect for lessons on metamorphic rocks and alteration
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Rochester, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
RHYOLITE | Rhyolite is an aphanitic felsic rock which forms during eruptions of thick, viscous magma. Often containing phenocrysts of felsic minerals with only slightly higher crystallization temperatures than the feldspar and quartz that forms rhyolite
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. The evolved chemistry of the rock makes it lightweight relative to other igneous rocks- a good identifier for classification
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Rhyolite Igneous Rock Specimen - Hand Sample - Approx. 3"
RHYOLITE | Rhyolite is an aphanitic felsic rock which forms during eruptions of thick, viscous magma. Often containing phenocrysts of felsic minerals with only slightly higher crystallization temperatures than the feldspar and quartz that forms rhyolite
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. The evolved chemistry of the rock makes it lightweight relative to other igneous rocks- a good identifier for classification
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Scoria Igneous Rock Specimen 1" - Geologist Selected Samples - Eisco Labs
SCORIA | Scoria forms as spatter from bubbly, mafic lava is thrown into the air and cooled quickly. The crystallization happens so quickly that large air pockets are trapped within the rock, often giving samples a jagged, sharp appearance
GREAT FOR GEOLOGY CLASSROOMS | A good example of pyroclastic material. Can be used in a variety of igneous classification exercises
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Scoria Igneous Rock Specimen - Approx. 3" - Hand Sample
SCORIA | Scoria forms as spatter from bubbly, mafic lava is thrown into the air and cooled quickly. The crystallization happens so quickly that large air pockets are trapped within the rock, often giving samples a jagged, sharp appearance
GREAT FOR GEOLOGY CLASSROOMS | A good example of pyroclastic material. Can be used in a variety of igneous classification exercises
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
SERPENTINITE | 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
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Greenish in color and smooth to the touch, serpentinite is often found as a plane of weakness in faulted rocks. Excellent for lessons on metamorphic rocks, low-grade deformation, and structural geology
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Slate Metamorphic Rock Specimen - Approx. 3" - Hand Sample
SLATE | 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
GREAT FOR GEOLOGY CLASSROOMS | Ideal for exercises in metamorphic rock identification due to its recognizable platy foliation
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Sulfur Mineral Specimen - Approx. 1"
SULFUR | Sulfur is a popular mineral that forms as a soft precipitate near volcanic vents and springs. This bright yellow mineral has a distinct smell and unusual streak color
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Great for students learning about streak tests - sulfur leaves an unexpected white streak
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Sulfur Mineral Specimen - Approx. 3" - Hand Sample
SULFUR | Sulfur is a popular mineral that forms as a soft precipitate near volcanic vents and springs. This bright yellow mineral has a distinct smell and unusual streak color
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Great for students learning about streak tests - sulfur leaves an unexpected white streak
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Sulfur Mineral Specimen - Hand Sample - Approx. 3"
SULFUR | Sulfur is a popular mineral that forms as a soft precipitate near volcanic vents and springs. This bright yellow mineral has a distinct smell and unusual streak color
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Great for students learning about streak tests - sulfur leaves an unexpected white streak
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
TALC | 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
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. A great example for lessons in mineral hardness, and characteristics exhibited by hydrothermally altered minerals
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
TRAVERTINE | & classification exercises. Travertine is a carbonate rock formed from gushing hot springs. The airy, porous material indicates an abundance of air bubbles moving through the rock as it solidified. While this characteristic is normally reserved for igneous rocks, travertine is unique in that it forms as a result of rapidly dropping pH levels
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Useful in lessons on sedimentary petrology and geothermal systems
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
VOLCANIC TUFF | Dust & ash deposited during explosive volcanic eruptions can become compacted and lithified over time, forming large packages of tuff. These layers show a record of the eruptions size & intensity, and allow geologists to estimate the rate of activity
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Volcanic Tuff Igneous Rock Specimen - Hand Sample - Approx. 3"
VOLCANIC TUFF | Dust & ash deposited during explosive volcanic eruptions can become compacted and lithified over time, forming large packages of tuff. These layers show a record of the eruptions size & intensity, and allow geologists to estimate the rate of activity
GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises
GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features
LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY
INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
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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 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 sample is red due to the inclusion of iron in the chemical structure of the rock GREAT FOR GEOLOGY CLASSROOMS | Ideal for students to compare with white sandstone to understand physical expression of chemical differences GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Red Slate Metamorphic Rock Specimen - Approx. 1" RED SLATE | Slate is very lightly metamorphosed and well-foliated. This appearance often makes it difficult to distinguish from its parent rock, shale. The two can be told apart by the difference in pitch when struck GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Slate is perfect for lessons on metamorphic rocks and alteration GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Rochester, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Red Slate Metamorphic Rock Specimen - Hand Sample - Approx. 3" RED SLATE | Slate is very lightly metamorphosed and well-foliated. This appearance often makes it difficult to distinguish from its parent rock, shale. The two can be told apart by the difference in pitch when struck GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Slate is perfect for lessons on metamorphic rocks and alteration GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Rochester, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
RHYOLITE | Rhyolite is an aphanitic felsic rock which forms during eruptions of thick, viscous magma. Often containing phenocrysts of felsic minerals with only slightly higher crystallization temperatures than the feldspar and quartz that forms rhyolite GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. The evolved chemistry of the rock makes it lightweight relative to other igneous rocks- a good identifier for classification GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Rhyolite Igneous Rock Specimen - Hand Sample - Approx. 3" RHYOLITE | Rhyolite is an aphanitic felsic rock which forms during eruptions of thick, viscous magma. Often containing phenocrysts of felsic minerals with only slightly higher crystallization temperatures than the feldspar and quartz that forms rhyolite GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. The evolved chemistry of the rock makes it lightweight relative to other igneous rocks- a good identifier for classification GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Scoria Igneous Rock Specimen 1" - Geologist Selected Samples - Eisco Labs SCORIA | Scoria forms as spatter from bubbly, mafic lava is thrown into the air and cooled quickly. The crystallization happens so quickly that large air pockets are trapped within the rock, often giving samples a jagged, sharp appearance GREAT FOR GEOLOGY CLASSROOMS | A good example of pyroclastic material. Can be used in a variety of igneous classification exercises GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Scoria Igneous Rock Specimen - Approx. 3" - Hand Sample SCORIA | Scoria forms as spatter from bubbly, mafic lava is thrown into the air and cooled quickly. The crystallization happens so quickly that large air pockets are trapped within the rock, often giving samples a jagged, sharp appearance GREAT FOR GEOLOGY CLASSROOMS | A good example of pyroclastic material. Can be used in a variety of igneous classification exercises GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
SERPENTINITE | 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 GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Greenish in color and smooth to the touch, serpentinite is often found as a plane of weakness in faulted rocks. Excellent for lessons on metamorphic rocks, low-grade deformation, and structural geology GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Slate Metamorphic Rock Specimen - Approx. 3" - Hand Sample SLATE | 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 GREAT FOR GEOLOGY CLASSROOMS | Ideal for exercises in metamorphic rock identification due to its recognizable platy foliation GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Sulfur Mineral Specimen - Approx. 1" SULFUR | Sulfur is a popular mineral that forms as a soft precipitate near volcanic vents and springs. This bright yellow mineral has a distinct smell and unusual streak color GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Great for students learning about streak tests - sulfur leaves an unexpected white streak GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Sulfur Mineral Specimen - Approx. 3" - Hand Sample SULFUR | Sulfur is a popular mineral that forms as a soft precipitate near volcanic vents and springs. This bright yellow mineral has a distinct smell and unusual streak color GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Great for students learning about streak tests - sulfur leaves an unexpected white streak GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
TALC | 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 GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. A great example for lessons in mineral hardness, and characteristics exhibited by hydrothermally altered minerals GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
TRAVERTINE | & classification exercises. Travertine is a carbonate rock formed from gushing hot springs. The airy, porous material indicates an abundance of air bubbles moving through the rock as it solidified. While this characteristic is normally reserved for igneous rocks, travertine is unique in that it forms as a result of rapidly dropping pH levels GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises. Useful in lessons on sedimentary petrology and geothermal systems GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
VOLCANIC TUFF | Dust & ash deposited during explosive volcanic eruptions can become compacted and lithified over time, forming large packages of tuff. These layers show a record of the eruptions size & intensity, and allow geologists to estimate the rate of activity GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification
Raw Volcanic Tuff Igneous Rock Specimen - Hand Sample - Approx. 3" VOLCANIC TUFF | Dust & ash deposited during explosive volcanic eruptions can become compacted and lithified over time, forming large packages of tuff. These layers show a record of the eruptions size & intensity, and allow geologists to estimate the rate of activity GREAT FOR GEOLOGY CLASSROOMS | Ideal for identification & classification exercises GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features LOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY INDIVIDUALLY PACKAGED & LABELED | Each specimen sample is packaged in a transparent bag, and is labeled & barcoded for easy identification