Why always quartz?

@article{id844,
  author = {Kruhl, J.H.},
  journal = {Zentralblatt f\"ur Geologie und Pal\"aontologie},
  language = {en},
  pages = {123-137},
  title = {Why always quartz?},
  volume = {1},
  year = {1991},
}

%O Journal Article
%A Kruhl, J.H.
%J Zentralblatt für Geologie und Paläontologie
%G en
%P 123-137
%T Why always quartz?
%V 1
%D 1991