Updated November 8 Here’s the Midland Gem and Mineral Society Facebook Posting about this presentation: My presentation to the Midland Gem and Mineral Society went great.  I took many rock pictures and specimens which everyone enjoyed.  Raymond Boswell was invaluable in the technical aspect of a visual slide presentation on the auditorium screen in the Sibley Nature Center.  Bill Halepeska did a great job assisting me in presenting the information to a large and interested group.  Thanks to Raymond, Bill, and the membership for sharing the evening with me.