Rock and Mineral Specimens and Collections
Eisco™ Obsidian Specimen
Obsidian Specimen, also known as volcanic glass, forms from lava that cools almost immediately upon eruption.
Eisco™ Biotite Gneiss Specimen
Biotite Gneiss is high-grade metamorphic rock formed from other rocks undergoing alteration from intense heat and pressure.
Eisco™ Red Sandstone Specimen
Red Sandstone Specimen is made up of well-sorted and well-rounded grains of quartz.
Eisco™ Gabbro Specimen
Gabbro forms when iron-rich magma too heavy to reach surface cools slowly over time.
Eisco™ Black Hematite Mineral Specimen
Hematite specimen that is ideal for demonstrations in mineral physical properties.
Eisco™ Slate Specimen
Slate Specimen for use in metamorphic classification and identification exercises.
Eisco™ Fossiliferous Limestone Specimen
Fossiliferous Limestone Specimen for sedimentary rock identification and studying fossils within whole rocks.
Eisco™ Streak Plates for Minerals
The off-black, unglazed porcelain of these streak plates show a mineral's color in powder form, or to identify the mineral content of a rock.
Eisco™ Raw Quartz, Mineral Specimen - Approx. 3 Inch
Quartz mineral specimen for use in classroom identification labs and exercises.
Eisco™ Coarse White Marble, Metamorphic Rock Specimen - Approx. 3 Inch
For use in classroom activities to ascertain differences between metamorphic rocks and their provenance. EISCO Coarse White Marble Specimen (Metamorphic Rock) is formed from limestone. High-pressure, low-heat alteration leads to massive crystalline rock.
Eisco™ Anthracite Coal Specimen
Anthracite Coal is formed in anoxic environments from compressed organic matter, and is used worldwide as fuel source.
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™ Oligoclase Mineral Specimen
Oligoclase is a feldspar with high levels of sodium.
Eisco™ Raw Andesite, Igneous Rock Specimen - Approx. 3 Inch
Andesite Specimen for introduction to igneous rock classification and identifying minerals within igneous rocks.