Igneous Rock Mineral Feature

Igneous rock mineral feature crossword clue, 6 letters. A crossword question in Daily Telegraph Sydney on Saturday, 16 September 2017

The answer: Albite

Igneous rock mineral feature in example

On all sides of these larger fissures small reticulated linear openings are also filled . Replacement of the wall rock has been of minor importance though there has been replacement to a slight extent. This is shown by minerals of the igneous rock being surrounded by the metallic minerals. Even in such cases it is difficult to determine whether the result has been accomplished by replacement of the igneous rock mineral feature or by filling of openings which extended completely around the mineral. Either condition might produce the same result . However isolated cases seem to be surely the result of replacement and the very isolation of such cases serves only to emphasize the minor role replacement has played in the formation of the ores.

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