Block, SkipCaptcha, nsAm_Govt_101RO, nsAm_Govt_101RW, nsAm_Govt_101_ta, nsTeam2RO, nsTeam2RW, nsTeam2_talkRO, nsTeam2_talkRW
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Line 1: − + − Pellant, p. 250+ − ==Sources==+ − *Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York (1995) +
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'''Amphiboles''' are a group of common [[rock]]-forming [[mineral]]s, often with complex composition but mostly [[Ferro-magnesian mineral|ferro-magnesian]] [[silicate]]s.
[[Image:Amphibole.jpg|thumb|300px]]The '''amphiboles''' are a family of [[silica]]te [[mineral]]s that form prism or needle-like [[crystal]]s. Amphibole minerals generally contain [[iron]], [[magnesium]], [[calcium]] and [[aluminum]] in varying amounts along with [[silicon]], [[oxygen]], and [[water]]. Hornblende, shown in this image, is a common dark green to black variety of amphibole; it is a component in many [[igneous]] and [[metamorphic]] rocks.<ref>http://wrgis.wr.usgs.gov/docs/parks/rxmin/mineral.html#amphibole</ref>
==References==
<references/>
[[Category:Geology]]
[[Category:Minerals]]
[[Category:Minerals]]