TITLE:
Chemical Treatment Effects of Blue, Yellow and Green Colors with Heating Methods on Agates of Cheshme Shoor Area, Qom, Iran
AUTHORS:
Mohammad Yazdi, Reyhane Lotfi, Fariborz Masoudi, Niloofar Musavi Pak
KEYWORDS:
Treatment, Agate, Volcanic Rocks, Cheshme Shoor, Qom
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.4 No.3,
May
12,
2016
ABSTRACT: The Cheshme Shoor area is located in northeast of Qom which is a part of central Iran geo-structural
zone. The rocks of the area are mainly volcanic rocks that include Eocene acidic tuffs and ignimbrites.
Different types of agate, jasper and amethyst formed as secondary cavity filling deposits in
variety of colors and shapes in the area. In this paper, chemical treatments by different chemicals
with heating methods in 15 different procedures have been conducted on one agate sample of the
study area which has been divided into smaller pieces by milling. Dyeing with these methods has
been done in blue, yellow and green colors. Excellent results have been achieved in 9 processes, significant
but not expected results have been illustrated in 4 processes and 2 processes have been
represented no changes. Produced colors have had a natural and light color which makes them
more desirable to the consumers but totally these dyeing processes illustrate that concentration
of the solution is effective in coloring and solutions with more concentrations produce stronger
color.