The fine-grained groundmass in this sample consists of indistinguishable quartzofeldspathic phases. Phenocrysts both feldspar phases are clustered together; the cores of most are absent, perhaps due to plucking during the making of the thin section or possibly due to resorption. Hornblende phenocrysts are very incomplete and anhedral. Biotite phenocrysts are much smaller and subhedral in shape.
The author has given permission for this work to be deposited in the Digital Archive of Colorado College.
The author has given permission for this work to be deposited in the Digital Archive of Colorado College.
