Kovdite
A rock subtype
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Name:
for the locality: Kovda, White Sea, Russian Federation
A local name for a variety of pyroxene hornblendite composed of green amphibole and orthopyroxene, with small amounts of biotite and plagioclase and occasional garnet.
It may be a metamorphic rock.
The description given in Tomkeieff et al. (1983) appears to be incorrect.
It may be a metamorphic rock.
The description given in Tomkeieff et al. (1983) appears to be incorrect.
Unique Identifiers
Mindat ID:
52116
Long-form identifier:
mindat:1:1:52116:5
GUID
(UUID V4):
(UUID V4):
d1bb18c1-6dd4-437e-99e9-1300f4b88dd1
Classification of Kovdite
Mineralogy of Kovdite
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 > 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 |
| Pyroxene > Orthopyroxene | A petrological term for Orthopyroxene Subgroup. |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
| Garnet Group | X3Z2(SiO4)3 |
Internet Links for Kovdite
mindat.org URL:
https://www.mindat.org/min-52116.html
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References for Kovdite
Reference List:
