Rock and Mineral Specimens and Collections
Eisco™ Slate Specimen
Slate Specimen for use in metamorphic classification and identification exercises.
Eisco™ Conglomerate Specimen
Conglomerate Specimen has large clasts that indicate that pieces of rock underwent large amount of rolling, bouncing, and other weathering to become round.
Eisco™ Gabbro Specimen
Gabbro forms when iron-rich magma too heavy to reach surface cools slowly over time.
Eisco™ Fossiliferous Limestone Specimen
Fossiliferous Limestone Specimen for sedimentary rock identification and studying fossils within whole rocks.
Eisco™ Bituminous Coal Specimen
Bituminous Coal is formed in anoxic environments from compressed organic matter, and is used worldwide as a fuel source.
Eisco™ Siltstone Specimen
Siltstone Specimen is a clastic rock made up of small, nearly microscopic grains of silt.
Eisco™ Muscovite Mica Mineral Specimen
Muscovite Mica Mineral Specimen forms in thin sheets that are individually weak, but comprehensively strong.
Eisco™ Sandstone Specimen
Sandstone Specimen is made up of well-sorted and well-rounded grains of quartz.
Eisco™ Phyllite Specimen
Phyllite Specimen for demonstrations of metamorphic properties, such as glossy sheen and dense, foliated minerals.
Eisco™ Mica Schist Specimen
Mica Schist Specimen for use in lessons on metamorphic rock properties, classification, and identification.
Eisco™ Pumice Specimen
Pumice is formed quickly during volcanic eruptions around pockets of air within lava.
Eisco™ Diorite Specimen
Diorite Specimen straddles the line between mafic and felsic rock chemistry.
Eisco™ Scoria Specimen
Scoria forms when spatter from bubbly mafic lava cools quickly.
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™ Garnet Mineral Specimen
Garnet forms under intense heat and pressure conditions, making it a common mineral in mountainous terranes.