Characterization and optical properties of gypsum in Sudan

Abstract

In this study samples have been taken from gypsum Sudan and studied by (XRF) to know

what elements which component it. Were found that greater concentration in Ca and Sr.

Also the same samples have been studied by (UV

-

VIS) in order to get optical

properties,

were found that absorption , absorption coefficient ,extinction coefficient , reflection

coefficient and refractive index for gypsum grey (0.42a.u),(9.6cm

-

1

),(3.20),(3.22),(2) at the

wave lengths(251nm) ,(252nm),(254nm),(250nm),(253nm

)

and also

the same previous

optical properties has been studied for second sample of gypsum white and the results as

follow(0.538a.u),(

1.26

×

10

6

cm

-

1

),(

0.02

64),(

4.28

),(

2.09

)

at

the

wave

lengths

(240nm),(240nm),(241nm),(262nm),(241nm)

, and (FTIR) has been used to v

erify b

o

nds

between elements