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EISCO Obsidian Specimen (Igneous Rock), Approx. 1" (3cm)

R 753

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EISCO Obsidian Specimen (Igneous Rock), Approx. 1" (3cm)
- Obsidian sample approximately 1" (3cm) in size
- Volcanic glass formed through the nearly instantaneous quenching of lava
- Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements
- Obsidian shares many physical properties with its major chemical component, quartz, despite looking dissimilar
- Specimen comes in clear labeled and barcoded bag for ideal storage
Obsidian, also known as volcanic glass, forms from lava that cools almost immediately upon eruption, usually into water. Despite being dark in color, obsidian is made up of microcrystalline quartz, demonstrated by sharing the hardness and conchoidal fracture often exhibited by quartz. This sample is also available in packs of 12.
Country USA
Brand EISCO
Manufacturer Eisco
Binding Office Product
ItemPartNumber ESNG0046
Size 1 Pack
UnitCount 1
ReleaseDate 0000-00-00

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