This page is currently not sponsored. Click here to sponsor this page.
A variety of alkali-feldspar-syenite consisting of microperthite, arfvedsonite, aegirine and, sometimes, nepheline.
Classification of UmptekiteHide
Mineralogy of UmptekiteHide
Essential minerals - these are minerals that are required within the classification of this rock:
|Amphibole > Arfvedsonite||[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2|
|Feldspar > Alkali Feldspar||Feldspar Group minerals rich in Potassium or Sodium.|
|Microperthite||A microscopic intergrowth of albite or other plagioclase and orthoclase or microcline.|
|Pyroxene > Clinopyroxene > Aegirine||NaFe3+Si2O6|
Non-essential minerals - these minerals are common, sometimes major components, but are not always present: