Amphibole

Amphibole (/ˈæmfəboʊl/) is a group of inosilicate minerals, forming prism or needlelike crystals,[1] composed of double chain SiO
4 tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures. Its IMA symbol is Amp.[2] Amphiboles can be green, black, colorless, white, yellow, blue, or brown. The International Mineralogical Association currently classifies amphiboles as a mineral supergroup, within which are two groups and several subgroups.[3]

This article is about the mineral. For the logical fallacy, see equivocation. For the ambiguous grammatical construction, see amphibology. For the study of amphibians (amphibiology), see amphibian.
Amphibole (tremolite)
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