Difference between revisions of "Leucocratic rock"
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== Description == | == Description == | ||
| − | [http://cameo.mfa.org/materials/fullrecord.asp?name=Igneous Igneous] rock containing 65 to 95% of [http://cameo.mfa.org/materials/fullrecord.asp?name=felsic | + | [http://cameo.mfa.org/materials/fullrecord.asp?name=Igneous Igneous] rock containing 65 to 95% of [http://cameo.mfa.org/materials/fullrecord.asp?name=felsic%20minerals felsic minerals], such as feldspathoids ([http://cameo.mfa.org/materials/fullrecord.asp?name=nepheline nepheline] and [http://cameo.mfa.org/materials/fullrecord.asp?name=leucite leucite]), [http://cameo.mfa.org/materials/fullrecord.asp?name=muscovite muscovite], and [http://cameo.mfa.org/materials/fullrecord.asp?name=corundum corundum]. Because felsic minerals lack iron and magnesium, they are generally light in color and consequently are referred to as leucocratic. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | rocha | + | rocha leucocrática (Port.) |
== Authority == | == Authority == | ||
| − | * | + | * Submitted information Comment: José Delgado Rodrigues, LNEC, 2009 |
| − | * | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: Leucocratic rock |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 07:49, 24 July 2013
Description
Igneous rock containing 65 to 95% of felsic minerals, such as feldspathoids (nepheline and leucite), muscovite, and corundum. Because felsic minerals lack iron and magnesium, they are generally light in color and consequently are referred to as leucocratic.
Synonyms and Related Terms
rocha leucocrática (Port.)
Authority
- Submitted information Comment: José Delgado Rodrigues, LNEC, 2009
- Encyclopedia Britannica, http://www.britannica.com Comment: Leucocratic rock