Greenhalghite
A rock subtype
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A variety of quartz latite consisting of phenocrysts of oligoclase-andesine and biotite in a matrix of quartz and K-feldspar, corresponding to the yosemititic magma-type of Niggli.
Unique Identifiers
Mindat ID:
55200
Long-form identifier:
mindat:1:1:55200:4
GUID
(UUID V4):
(UUID V4):
45a4a401-695c-4547-893a-97bd04b6587f
Classification of Greenhalghite
Mineralogy of Greenhalghite
Essential minerals - these are minerals that are required within the classification of this rock:
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 |
Mica > Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
Silica > Quartz | SiO2 |
Internet Links for Greenhalghite
mindat.org URL:
https://www.mindat.org/min-55200.html
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