Litchfieldite
A rock subtype
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About Litchfieldite
First Recorded Locality:
A coarse-grained, somewhat foliated variety of nepheline-syenite consisting of K-feldspar, albite, nepheline, cancrinite, sodalite and lepidomelane.
Unique Identifiers
Mindat ID:
50574
Long-form identifier:
mindat:1:1:50574:1
Classification of Litchfieldite

Foid-syenite is in section 11 of the QAPF diagram.
Mineralogy of Litchfieldite
Essential minerals - these are minerals that are required within the classification of this rock:
| Feldspar > Alkali Feldspar > Albite | Na(AlSi3O8) |
| Feldspar > Alkali Feldspar > K Feldspar | Potassium-dominant feldspars with variable crystal symmetry and Al-Si ordering state; they are a subgroup of ... |
| Feldspathoid > Cancrinite | (Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O |
| Feldspathoid > Nepheline | Na3K(Al4Si4O16) |
| Feldspathoid > Sodalite | Na4(Si3Al3)O12Cl |
| Lepidomelane | General term for dark Fe-rich micas that have not been sufficiently well analyzed to determine the species. |
First Recorded Occurrence of Litchfieldite
Common Associates
Associations Based on Photo Data:
| 1 photo of Litchfieldite associated with Cancrinite | (Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O |
Internet Links for Litchfieldite
mindat.org URL:
https://www.mindat.org/min-50574.html
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Dennis Hill locality, Litchfield, Kennebec County, Maine, USA