Rock and Mineral Specimens and Collections
Eisco™ Apatite Specimen
Apatite is a common phosphate mineral often found as an accessory mineral in igneous rocks or as concretions or detrital clasts in sedimentary rocks. A standard Mohs hardness of 5 and a relatively uncommon crystal habit.
Eisco™ Albite Specimen
Albite is a variety of plagioclase feldspar that is rich in sodium. With a glossy sheen, 2 planes of cleavage, and a standard hardness of 6, this mineral is a classic specimen for lessons in mineralogy and petrology. Useful when trying to distinguish from other feldspars.
Eisco™ Gypsum Rock Specimen, 3cm
Gypsum is a sulfate mineral formed as the byproduct of evaporating saltwater. When this mineral becomes lithified, it forms rock gypsum, a sedimentary rock. These 3cm samples are great for use as classroom specimens or as a part of a small rock collection.
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™ Raw Andesite, Igneous Rock Specimen - Approx. 3 Inch
Andesite Specimen for introduction to igneous rock classification and identifying minerals within igneous rocks.
Eisco™ Milky Quartz Mineral Specimen
Milky Quartz Mineral Specimen has a tightly packed framework and hardness of 7, complete lack of cleavage planes, and distinct euhedral crystal habit.
Eisco™ Black Hematite Mineral Specimen
Hematite specimen that is ideal for demonstrations in mineral physical properties.
Eisco™ Pumice Specimen
Pumice is formed quickly during volcanic eruptions around pockets of air within lava.
Eisco™ Arkose Sandstone Specimen (Sedimentary Rock)
Arkose Sandstone is clastic sedimentary rock made up of angular, poorly-sorted sand-size grains.
Eisco™ Rhyolite Specimen
Rhyolite Specimen is aphanitic felsic rock, formed during eruptions of thick, viscous magma.
Eisco™ Basalt Specimen
Basalt is formed quickly from an iron-rich magma and exhibits a dark color and small crystal size.
Eisco™ Olivine Mineral Specimen
Olivine Mineral Specimen for teaching students about mineral physical properties like hardness, fracture, 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™ Granite Specimen
Granite Specimen is a must-have sample when discussing rock types, rock cycle, formation, classification, and identification of igneous rocks.
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.