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PHONOLITE

Miscellaneous

Family: None
Region: None
Mined At: Unspecified
Raw Mineral: Yes
Generic: No

Notes

(Richard Willis)

Volcanic rock, essentially of nepheline, anorthite (sanidine), and aegirine (acmite), with noseane, olivine, Hauyne, sodalite, Melanite, and hornblende. Formed by magma eruptions, it can be viewed as the younger, volcanic equivalent of nepheline-syenite: as a fritted nepheline-syenite.

Authors

Richard Willis (Owner)

Pictures

Phonolite Rutile

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