Rock and Mineral Specimens and Collections
Eisco™ Labradorite Sedimentary Rock Specimen
Labradorite is a variety of plagioclase feldspar, intermediate between anorthite and albite. Notable about this species of feldspar is its potential for iridescence.
Eisco™ White Quartzite Metamorphic Rock Specimen
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.
Eisco™ Serpentinite Metamorphic Rock Specimen
When clay- and aluminum-rich rock is altered by water from geothermal systems, serpentinite is liable to form. Serpentinite is often found in low-grade metamorphic areas and is formed when clay and aluminum rich rock is altered by water from geothermal systems.
Eisco™ Breccia Specimen
Breccia Specimen has large angular clasts, making it possible to confidently ascertain depositional history of the rock.
Eisco™ Biotite Gneiss Specimen
Biotite Gneiss is high-grade metamorphic rock formed from other rocks undergoing alteration from intense heat and pressure.
Eisco™ Mica Garnet Schist Specimen
Mica Garnet Schist Specimen for use in lessons on metamorphic rock properties, classification, and identification.
Eisco™ Oligoclase Mineral Specimen
Oligoclase is a plagioclase fledspar that exemplifies many mineral physical properties including hardness, cleavage, and luster.
Eisco™ Fine White Marble Specimen
Fine White Marble Specimen for use in classroom activities to ascertain differences between metamorphic rocks and their provenance.
Eisco™ Garnet Mineral Specimen
Garnet forms under intense heat and pressure conditions, making it a common mineral in mountainous terranes.
Eisco™ Gabbro Specimen
Gabbro forms when iron-rich magma too heavy to reach surface cools slowly over time.
Eisco™ Gypsum Mineral Specimen
Gypsum Mineral Specimen ideal for use in study of cleavage and fracture as example of imperfect cleavage planes.
Eisco™ Slate Specimen
Slate Specimen for use in metamorphic classification and identification exercises.
Eisco™ Red Sandstone Specimen
Red Sandstone Specimen is made up of well-sorted and well-rounded grains of quartz.
Eisco™ White Quartzite, Metamorphic Rock Specimen - Hand Sample - Approx. 3 Inch
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.
Eisco™ Sedimentary Rocks Kit with Storage Box and ID Card
A fun introduction to the world of geology through a 12-piece rock kit. Each Tech Cut specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features.