CONTENTS / Vol. 43, No. 1

 Xonotlit profile
 Rupert Hochleitner and Stefan Weiß

 Glass opal from Bohemia: The Valec hyalite deposit
 Karl-Heinz Thuß and Stefan Weiß

 Mineralogical preparation (1): Trimming of steps
 Federico Pezzotta

 The Dallas Symposium 2017
 Tobias Weise

 Monazite from the Sella area, Switzerland
 Stefan Weiß

 The comprehensive LAPIS stock market calendar 2018

 New minerals