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SS-10

Abstract

Phenocrysts in this thin section are of augite, biotite, and opaques. Uralitization of augite is observed in one region of the sample and is absent elsewhere. One augite crystal appears dendritically intergrown with opaques. Nephaline, which is the dominant groundmass mineral, appears intergrown with another mineral though it is unclear which. These intergrowths are spherical in shape and observable at the macroscopic scale. Prismatic and radiating fibers of zeolites are found throughout. Apatite crystals span a great range of sizes with the longest crystals reaching more than a millimeter in length. Apatite crystals of a smaller size pervade the nephaline phase.

Note

The author has given permission for this work to be deposited in the Digital Archive of Colorado College.

Administrative Notes

The author has given permission for this work to be deposited in the Digital Archive of Colorado College.

Copyright
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Publisher
None
PID
coccc:19404