Umptekite
A rock subtype
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A variety of alkali-feldspar-syenite consisting of microperthite, arfvedsonite, aegirine and, sometimes, nepheline.
Unique Identifiers
Mindat ID:
52100
Long-form identifier:
mindat:1:1:52100:4
GUID
(UUID V4):
(UUID V4):
a0b15f56-fbaf-4239-b0c0-7dc855ff8255
Classification of Umptekite
Mineralogy of Umptekite
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 | A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium. |
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:
Feldspathoid > Nepheline | Na3K(Al4Si4O16) |
Internet Links for Umptekite
mindat.org URL:
https://www.mindat.org/min-52100.html
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