Rock and Mineral Specimens and Collections
Eisco™ Oligoclase Mineral Specimen
Oligoclase is a plagioclase fledspar that exemplifies many mineral physical properties including hardness, cleavage, and luster.
Eisco™ Mica Garnet Schist Specimen
Mica Garnet Schist Specimen for use in lessons on metamorphic rock properties, classification, and identification.
Eisco™ Albite Mineral Specimen
Albite Mineral Specimen ideal for use in lessons about the Mohs hardness scale.
Eisco™ Labradorite Mineral Specimen
Labradorite is a variety of plagioclase feldspar, an intermediate between anorthite and albite.
Eisco™ Fluorite Mineral Specimen
Fluorite Mineral Specimen is used in classroom identification lab exercises and for study of uncommon 4-plane cleavage pattern.
Eisco™ Limestone Specimen
Limestone Specimen is made up of mostly calcium carbonate and organic material.
Eisco™ Travertine Sedimentary Rock Specimen
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. Travertine is unique in that it forms as a result of rapidly dropping pH levels.
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™ Raw Chlorite, Metamorphic Mineral Specimen - Approx. 3 Inch
Chlorite is a metamorphic mineral that has undergone light alteration. During metasomatism, phyllosilicate minerals may become hydrated and form chlorite.
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™ Chorite Mineral Specimen
Chlorite is a metamorphic mineral that has undergone light alteration. During metasomatism, phyllosilicate minerals may become hydrated and form chlorite.
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™ Greywacke Sedimentary Rock Specimen
Graywacke is a sedimentary rock composed of large, angular clasts within a fine-grained clay matrix. Formed during underwater avalanches, these rocks are often found on distal ocean shelves.
Eisco™ Phyllite Specimen
Phyllite Specimen for demonstrations of metamorphic properties, such as glossy sheen and dense, foliated minerals.
Eisco™ Argillaceous Shale Specimen
Argillaceous Shale Specimen is formed from cementation and lithification of very small grains of rock, commonly mud or clay.