Brown ocher

Description

A natural earth brown pigment ranging in color from a dark yellow to a deep reddish brown. Brown ocher contains Silica, Clay, and a mixture of iron oxides along with small amounts of Manganese dioxide. It is more commonly called Umber or Sienna, depending on its color.

Synonyms and Related Terms

umber; sienna; brown ochre (Br.); ocra marrone (It.)

Sources Checked for Data in Record

• Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)

• R.D. Harley, Artists' Pigments c. 1600-1835, Butterworth Scientific, London, 1982

• Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000

• The Dictionary of Art, Grove's Dictionaries Inc., New York, 1996 Comment: "Pigments"