In addition to the regular editions, it occasionally includes supplementary numbers, distributed at no additional cost to subscribers, on mineral collections from specific geographical areas.

[1] In the first year, only four numbers were published, without color photographs, with the financial support of Arthur Montgomery.

[4] The role of its editor, Wendel E. Wilson, has been recognized by giving another mineral the name of wendwilsonite.

[5] In 1994, he won the Carnegie Prize for Mineralogy, the only time it has been awarded to a magazine.

It covers a wide range of mineralogy-related topics such as the history of mineral collecting, social and cultural aspect of mineralogy and mineral-related travelogs.