Difference between revisions of "Amphibole group"
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| − | ''' | + | [[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/> | |
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| + | [[Category:Geology]] | ||
[[Category:Minerals]] | [[Category:Minerals]] | ||
Revision as of 01:57, September 30, 2007
The amphiboles are a family of silicate minerals that form prism or needle-like crystals. 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.[1]