Assertion: muscovite mica | /r/AtLocation | such large sheets
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: In the early years of the colonisation of North-America by the Europeans, in the time that buffalo still roamed the wide open spaces and Indian tribes were still thriving and the English still the rulers, so really way back in time, before Madonna started to sing and Homer was not yet associated with the Simpsons but only with some old Greeks, even before Brigitte Bardot started worrying about homeless doggies, muscovite mica was sometimes found in such large sheets that it could be used as window material for houses.
text: In the early American colonial years, muscovite mica was sometimes found in such large sheets that it could be used as window material for houses.