Difference between revisions of "Basic Rock"
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| − | [[ | + | '''Basic rocks''' are [[igneous rock]]s that contain between 45% and 55% total [[silica]]. These have less than 10% [[quartz]] and are rich in [[ferro-magnesian mineral]]s. |
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| − | [[ | + | ==Sources== |
| + | *Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York (1995) p. 250 | ||
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| + | [[Category:Igneous Rocks]] | ||
Latest revision as of 02:45, July 13, 2016
Basic rocks are igneous rocks that contain between 45% and 55% total silica. These have less than 10% quartz and are rich in ferro-magnesian minerals.
Sources
- Pellant, Chris. The Complete Book of Rocks and Minerals, Dorling Kindersley Inc.: New York (1995) p. 250