Hard copy version of our paper applying concepts of rarity in biology to rarity in geology published: American Mineralogist, June 2016; 101 (6) Invited Centennial Article
On the nature and significance of rarity in mineralogy
Robert M. Hazen, Jesse H. Ausubel
American Mineralogist, v. 101, i. 6, p. 1245-1251, Published on June 2016, First Published on June 02, 2016, doi:10.2138/am-2016-5601CCBY