EISCO Talc Mineral Specimens, Pack of 12, Approx. 1" (3cm), For Ages Child & Teen, Includes 12 Talc Specimens, Science

EISCO Talc Mineral Specimens, Pack of 12, Approx. 1" (3cm), For Ages Child & Teen, Includes 12 Talc Specimens, Science

Twelve talc samples approximately 1" (3cm) in size Talc is useful for lessons in mineral hardness - its softness contrasts well with a harder mineral such as quartz Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements Good example of the characteristics exhibited by hydrothermally altered minerals Specimen comes in clear labeled and barcoded bag for ideal storage Talc is at the bottom of the Mohs scale of hardness, and has a distinct soapy feel. Through the process of metasomatism, hot fluid infiltrates the atomic structure of other silicate minerals, altering them to form talc. By studying talc, students can learn the properties of minerals that have been thermally altered this way.