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Amphibole facts for kids

Kids Encyclopedia Facts
Tremolite-121232
Amphibole (Tremolite)

Amphibole is a group of inosilicate minerals. They form prism or needlelike crystals.

They are double chain SiO4 tetrahedra, linked at the vertices. Usually they contain ions of iron and/or magnesium in their structures. Amphiboles can be green, black, colorless, white, yellow, blue, or brown.

Images for kids

  • Thin section microscopy Siilinjärvi R636 6335 amphibole

    Photomicrographs of a thin section containing an amphibole crystal; under cross-polarized light on the left, and plane-polarized light on the right.

  • Horndio

    Hornblende diorite from the Henry Mountains, Utah, US

  • Amphibolite (Precambrian; Warrensburg, Adirondack Mountains, New York State, USA) 1

    Amphibolite from Warrensburg, Adirondack Mountains, New York State, USA

  • Amphibole 100

    Double-chain inosilicate structure looking up the [100] axis. Silicon ions are hidden by apical oxygen ions.

  • Amphibole 010

    Side view (along [010]) of double chain inosilicate backbone. Apical oxygens are at the bottom.

  • Amphibole 001

    Amphibole structure looking along the [001] axis. Silicon ions are emphasized. Two "I-beams" are outlined in green.

See also

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