Global InformationLitchfieldite information
Litchfieldite is a rare igneous rock. It is a coarse-grained, foliated variety of nepheline syenite,[1] sometimes called nepheline syenite gneiss or gneissic nepeheline syenite.[2] Litchfieldite is composed of two varieties of feldspar (mostly albite but also some microcline), with nepheline, sodalite, cancrinite and calcite. The mafic minerals, when present, are magnetite and an iron-rich variety of biotite (lepidomelane).
- ^ Le Maitre, R.W. (2002) Igneous Rocks - A Classification and Glossary of Terms, 2nd edition, Cambridge, Cambridge University Press, page 105. ISBN 0-521-66215-X
- ^ Robins, B. and Tysseland, M. (1979) Fenitization of some mafic igneous rocks in the Seiland province, northern Norway Archived 2015-09-24 at the Wayback Machine, Norsk Geologisk Tidsskrift, Volume 59 Number 1 pages 1-23, page 3. Retrieved 2015-07-20.