Delaware mineralogical society

A Delaware 501(c)(3) non-profit earth-science educational organization


Earth Science Articles

We are currently researching a new lineup of minerals to resume our 'Mineral of the Month' article series. Stay tuned!


A new Sillimanite article (Coming in March 2017!)

"The Colors of Fluorite" by Ken Casey
"Sillimanite: Delaware's Official State Mineral and Benjamin Silliman,A Tradition of Firsts" by Ken Casey
"Geodes" by Nathan Harrison (A DMS Exhibit Connection!)

Past Minerals of the Month (in DMSWeb1.0 format)


"Belemnites are Coming!!" by Ken Casey