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KBR15

Abstract

According to Western Minerals Inc., this sample is a 'contact rock from sediment immediately above dolerite,…rock with quartz 'spots'–probably inverted from tridymite spherulites–in a matrix of devitrified glass with mullite and cordierite.' Due to the fine-grained nature of the sample, it is difficult to distinguish individual mineral phases in the allotriomorphic, equigranular, microcrystalline groundmass. The only noteworthy features in this thin section are the spherical, slightly coarser grained nodules with orange-brown rims.

Note

The author has given permission for this work to be deposited in the Digital Archive of Colorado College.

from the farm Murrelfontein, see handout and map

Administrative Notes

The author has given permission for this work to be deposited in the Digital Archive of Colorado College.

Copyright
Copyright restrictions apply.
Publisher
None
PID
coccc:19498