Rock and Mineral Specimens and Collections
Eisco™ Raw Phyllite, Metamorphic Rock Specimen - Approx. 3 Inch
Phyllite Specimen for demonstrations of metamorphic properties, such as glossy sheen and dense, foliated minerals.
Eisco™ Oolitic Limestone Specimen (Sedimentary Rock)
Oolitic limestone is a carbonate rock formed from the cementation of thousands of ooids.
Eisco™ Porphyritic Granite Specimen
Porphyritic Granite Specimen is a must-have sample when discussing rock types, rock cycle, formation, classification, and identification of igneous rocks.
Eisco™ Diorite Specimen
Diorite Specimen straddles the line between mafic and felsic rock chemistry.
Eisco™ Magnetite Mineral Specimen
Magnetite grains align themselves with the earth's magnetic field, preserving a record of the field's direction when forming igneous rocks.
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™ Coquina Sedimentary Rock Specimen
Composed of bone and shell fragments, coquina is nearly 100% fossil matter. Held together by a carbonate cement, this skeletal mass forms in low-energy environments such as lagoons and reefs.
Eisco™ Dolostone Sedimentary Rock Specimen
Dolostone is a lithified form of dolomite. Composed primarily of carbonate material, dolostone is a more stalwart rock than its chemical cousin, limestone. It is often mined for construction and infrastructure purposes.
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™ Chorite Mineral Specimen
Chlorite is a metamorphic mineral that has undergone light alteration. During metasomatism, phyllosilicate minerals may become hydrated and form chlorite.
Eisco™ Oligoclase Mineral Specimen
Oligoclase is a plagioclase fledspar that exemplifies many mineral physical properties including hardness, cleavage, and luster.
Eisco™ Chlorite Mineral Specimen
Chlorite is a metamorphic mineral that has undergone light alteration.
Eisco™ Calcite Mineral Specimen
Calcite Mineral Specimen is used in classroom identification labs, exercises, and lessons on chemical reactions.
Eisco™ Labradorite Mineral Specimen
Labradorite is a variety of plagioclase feldspar, an intermediate between anorthite and albite.
Eisco™ Carbonaceous Shale Specimen
Carbonaceous Shale Specimen is formed from cementation and lithification of very small grains of rock, commonly mud or clay.