Dear All,
I am trying to find publications that describe reactions and
metamorphic conditions to the development of the "Bright-eyed" gneiss
from Death Canyon. The texture composed of dark magnetite core, about
1/4 inch in diameter surrounded with a rim composed of quartz,
feldspar in a gneiss matrix with quartz, feldspar, and biotite (see
attached image from
http://www.nps.gov/history/history/online_books/grte/grte_geology/sec5.htm)
Many thanks
Carla
--
Profa. Carla Porcher
Departamento de Geologia -IG/UFRGS
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