Rock and Mineral Specimens and Collections
Eisco™ Sulfur Mineral Specimen
Sulfur Mineral Specimen ideal for mineral identification exercises, due to its instantly recognizable physical properties.
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™ Breccia Specimen
Breccia Specimen has large angular clasts, making it possible to confidently ascertain depositional history of the rock.
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™ Lodestone Mineral Specimen
A naturally magnetized mineral that creates its own magnetic field and can pick up small metal objects.
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™ Biotite Gneiss Specimen
Biotite Gneiss is high-grade metamorphic rock formed from other rocks undergoing alteration from intense heat and pressure.
Eisco™ Fine White Marble Specimen
Fine White Marble Specimen for use in classroom activities to ascertain differences between metamorphic rocks and their provenance.
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™ Hematite Mineral Specimen
This specular variety of hematite takes the form of tiny, sparkling iron oxide crystals.
Eisco™ Hornfels Specimen
Hornfels forms in narrow band between an igneous intrusion and surrounding rock.
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™ Oligoclase Mineral Specimen
Oligoclase is a feldspar with high levels of sodium.
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.