Alien head concretion donated to the public By Sharon A. Hill | September 10, 2026 3 Comments Preserving an odd specimen for the public good benefits everyone. I was excited to donate my alien head concretion to a good home.
Cookie monster agate By Sharon A. Hill | January 24, 2021 0 Comment A geode infilled with milky blue quartz/agate bears an uncanny resemblance to Sesame Street’s infamous Cookie Monster.
Faces in Places: Mimetoliths By Sharon A. Hill | May 17, 2020 0 Comment Rock formations that look like faces are called “mimetoliths”. Faces in rock can accrue great cultural significance as land marks. Societies place spiritual meaning into features that appear meaningful because they resemble a human form.