**2.3.3 Analysis**

The spectral reflectance of the pigment was measured using a Colour Quest Goniospectrophotometer (CE-741-GL-Gretag Macbet Co). The SEM photomicrographs were obtained using an electron microscope (LEO-1455VP) and SEM studies were performed using this microscope equipped with EDX (to determine chemical composition of the observed objects). Appearance and colour of the covered mica flakes were observed by reflectance light microscope (Laborlux 11 pol, Leitz matallux 3). Finally, the phase analysis of the resultant pigment powders was determined by X-ray diffractometer (XRD-Philips-Xpert). Density and particle size of resultant pigment were measured by helium pycnometer (Accupyc 1330) and Master sizer 2000 (Mal 100229) respectively.
