phenocrysts

Gutmann (1974) found similar tubular voids in labradorite phenocrysts from Sonora, Mexico.

Evidence for Fluid Saturation and Degassing 2008

CO2-rich vapors trapped along with silicate melt in mixed inclusions within phenocrysts as well as ejected ultramafic xenoliths.

Evidence for Fluid Saturation and Degassing 2008

Kata Tjuta, covering about 3,500 ha, comprises 36 steep-sided rock domes of gently dipping Mount Currie conglomerate consisting of phenocrysts of fine grained acid and basic rocks, granite and gneiss in an epidote rich matrix.

Uluru-Kata Tjuta National Park, Australia 2008

Six widespread tephras ~0.1–1.0 cm thick with rhyolitic to dacitic glass and/or phenocrysts of feldspar or hornblende are preserved in the glacial lakes of Las Cajas National Park, southern Ecuador.

Tephras in Ecuador « Climate Audit 2006

Others with no crystals, some with small white phenocrysts, maybe one to less than five percent.

First Man James R. Hansen 2005

Others with no crystals, some with small white phenocrysts, maybe one to less than five percent.

First Man James R. Hansen 2005

Others with no crystals, some with small white phenocrysts, maybe one to less than five percent.

First Man James R. Hansen 2005

Others with no crystals, some with small white phenocrysts, maybe one to less than five percent.

First Man James R. Hansen 2005

Similar quartz grains in the granophyric blocks contain primary, 2-phase, vapor-rich fluid inclusions, consistent with vapor saturation during growth of these igneous phenocrysts.

Granophyre.html 1998

Melt inclusions (n = 21) in euhedral quartz phenocrysts from the pumice contain an average of 2.6 wt. % H2O, 3800 ppm Cl, and 1300 to 5200 ppm

Granophyre.html 1998