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Eisco Hornblende (Amphibole Mineral) Specimen, Approx. 1" (3cm) - Pack of 12

  • Twelve hornblende samples approximately 1" (3cm) in size
  • Useful for students to study as an example of two-plane, non-perpendicular cleavage
  • Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements
  • Ideal for use in lessons on Bowen's reaction series
  • Specimen comes in clear labeled and barcoded bag for ideal storage
  • Average Specimen Size - 2-3 cm


Hornblende is part of a group of minerals known as amphiboles. These minerals are chemically and structurally similar to pyroxenes, but include water in their atomic structure. These properties make hornblende useful when studying both igneous and metamorphic rocks, as well as when learning the process behind mineral identification.
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