Fragmental quartz chunks in glass with occasional glass-surrounded plagioclase clusters. Western Minerals Inc. indicates this sample has partially melted to glass with tridymite developed.
The author has given permission for this work to be deposited in the Digital Archive of Colorado College.
from the farm Murrelfontein adjacent to contact with gabbro, see handout and map
The author has given permission for this work to be deposited in the Digital Archive of Colorado College.
