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A variety of alkali feldspar syenite consisting essentially of orthoclase, microcline and albite with traces of foids and sodic pyroxene and/or amphibole.
Classification of BigwooditeHide
Mineralogy of BigwooditeHide
Essential minerals - these are minerals that are required within the classification of this rock:
|Feldspar > Alkali Feldspar > Albite||Na(AlSi3O8)|
|Feldspar > Alkali Feldspar > Microcline||K(AlSi3O8)|
|Feldspar > Alkali Feldspar > Orthoclase||K(AlSi3O8)|
Non-essential minerals - these minerals are common, sometimes major components, but are not always present: