minette

plural minettes

1. datedThe smallest of regular sizes of portrait photographs.

   […] there were hundreds of other sizes of photographic prints ranging from a minette novelty to mammoth views.

   1981, Lou W. McCulloch, Card Photographs: A Guide to Their History and Value, page 161

   1 more example

   The title page bears a minette portrait of the Duke being crowned by the hand of an ideal figure of Chicago, and below are the coat-of-arms and motto of the Duke's house.

   1893, Columbian Exposition Dedication Ceremonies Memorial

2. chemistryA mineral deposit consisting of iron ore of sedimentary origin, found in the south of Luxembourg and in Lorraine.

   The minettes of Buell Mountain are felsic, and many contain ground-mass quartz.

   1977, Navajo Kimberlites and Minettes