Just Like A Pill 148 I Don't Believe You 149 Who Knew 150 Whataya Want From Me 151 Aye Mary Y 152 Raise Your Glass 153 Don't Let Me Get Me 154 Fuckin' Perfect 155 I Touch Myself 156 Heartbreak Down 157 Please Don't Leave Me 158 U And Your Hand 159 Leave Me Alone 160 So Wh...
The purple spinel is colored by Fe3+ and Fe2+. Keywords: spinel; infrared spectrum; UV–visible spectrum; Raman spectrum; mineral chemistry 1. Introduction Gem-quality spinel (Figure 1) is a kind of precious stone with a long history. In ancient societies, the red gem-quality spinel was ...