Nordmarkite
A rock subtype
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Name:
For Nordmarka, Oslo, Norway
A variety of quartz-bearing alkali-feldspar-syenite composed mainly of microperthite with minor biotite, alkali amphibole or pyroxene.
Unique Identifiers
Mindat ID:
51927
Long-form identifier:
mindat:1:1:51927:6
GUID
(UUID V4):
(UUID V4):
0a0bc70c-fdb8-447b-8eba-3030829601b6
Classification of Nordmarkite
Mineralogy of Nordmarkite
Essential minerals - these are minerals that are required within the classification of this rock:
Amphibole | (Na, K, â—»)(Ca,Na)2(Mg,Fe,Al)5((Si,Al)8O22)(OH,F,Cl,O)2 |
Feldspar > Alkali Feldspar > K Feldspar | Potassium-dominant feldspars with variable crystal symmetry and Al-Si ordering state; they are a subgroup of ... |
Feldspar > Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Pyroxene | A petrological term for Pyroxene Group. |
Silica > Quartz | SiO2 |
Internet Links for Nordmarkite
mindat.org URL:
https://www.mindat.org/min-51927.html
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