Sample: 84Au-112a


Sample ID: 84Au-112a [1] [2]
Station ID: 84Au-112
AT Num:
Volcano: Augustine
Possible source:
Eruption:
Collector: Daley, E. E.
Date sampled: 1984-01-01
Sample type 1: Lava
Color:
Final unit:
Text Description: Basaltic hyaloclastite lava flow. Augite, olivine, and hornblende phenocrysts in a slightly vesicular groundmass of plagioclase microlites, olivine, augite, and dark brown devitrified glass. Olivine phenocrysts occur as both large euhedral and small skeletal crystals. Augite commonly occurs in rounded clots of augite +/- olivine. Plagioclase is absent as a phenocryst but several rounded, sieve textures crystals are present as xenocrysts. Map unit Pvb (Waitt and Beget, 2009)
Sample Location:

References Cited

[1] Petrology, geochemistry, and the evolution of magmas from Augustine Volcano, Alaska, 1986

Daley, E. E., 1986, Petrology, geochemistry, and the evolution of magmas from Augustine Volcano, Alaska: University of Alaska Fairbanks unpublished M.S. thesis, Fairbanks, AK, 103 p.

[2] The role of water in generating the calc-alkaline trend: new volatile data for Aleutian magmas and a new tholeiitic index, 2010

Zimmer, M.M., Plank, Terry, Hauri, E.H., Yogodzinski, G.M., Stelling, Peter, Larsen, Jessica, Singer, Brad, Jicha, Brian, Mandeville, Charles, and Nye, C.J., 2010, The role of water in generating the calc-alkaline trend: new volatile data for Aleutian magmas and a new tholeiitic index: Journal of Petrology, v. 5, n. 12, p. 2411, 2444, doi:10.1093/petrology/egq062 .