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Glite Dictionary
amphibole

amphibole

1 9.9
A dark mineral that forms in rocks from cooling lava or from heat and pressure
  • noun
  • /æmˈfɪboʊl/
  • Specialized
: anfibol
  • Dark-colored minerals known as amphibole, such as hornblende, are often found in granite and other igneous rocks.
  • amphibole asbestos
  • amphibole fibers

Examples

  • The full "Agree:Disagree" tables for Libby Amphibole Asbestos, and Trichloroethylene are available in appendix B.

    Academic text (2017)

  • The amphibole asbestos is a carcinogenic sort, not the white chrysotile, which is being extracted in the town of Asbest (it's not the Bazhenovo, by the way).

    Blog text (5)

  • The dominant mineral is kaersutitic amphibole, set in dark vesicular glass.

    Academic text (2018)

  • In addition to the vermiculite product, the exfoliation produced a waste material that contained up to 10% amphibole asbestos (Minnesota Department of Health (MDH) 2005).

    Academic text (2012)

  • The dominant mineral is kaersutitic amphibole (Amp), set in vesicular glass (with examples of the glass and vesicles also indicated).

    Academic text (2018)

  • Note that the smallest amphibole grains are more rounded than the larger grains, which preserve large areas of planar growth faces, indicating a limited approach to the minimum-energy shape.

    Academic text (2018)

  • John's analysis determined that the black material is the mineral arfvedsonite, an amphibole similar to hornblende, with a composition of Na3(Fe, Mg)4FeSi8O22(F, OH)2.

    Blog text (21)

  • Geologists study amphibole to understand the formation of metamorphic rocks in mountain ranges.

  • The presence of amphibole in the rock sample indicates a high temperature of formation.

Synonyms

amphibole group
vsamphibole
  • Specialized
9.7

A group of minerals in rocks with similar crystal shapes that contain metals like iron and calcium

emphasizes dark color and common occurrence in igneous and metamorphic rocks

Compounds

amphibole group
  • Specialized
9.7

A group of minerals in rocks with similar crystal shapes that contain metals like iron and calcium

Surface Forms

amphibole singular
amphiboles plural

Etymology

Amphibole comes from the Greek part amphi- meaning 'both', the same amphi- you see in amphibian, an animal that lives in water and on land. This is a helpful memory because amphiboles are silicate minerals made of 'two' linked chains, so the name points to their double-chain structure.