Maine Mineral & Gem Museum - Maine Mineral & Gem Museum | Bethel ME

MMGM is Closed. We'll reopen Sat at 10 AM

Maine Mineral & Gem Museum

Current Events
Upcoming Events
Past Events

MMGM Field Trip: Geology Walk at Bucks & Lapham Ledge

10-12-2026 @ 09:30 AM - 10-12-2026@ 11:30 AM

Bucks and Lapham Ledge, Greenwood, Maine

MMGM Field Trip: Tamminen–Waisanen Quarry

07-10-2026 @ 09:30 AM - 07-11-2026@ 11:30 AM

Tamminen-Waisanen Quarry, Greenwood (Frank C. Perham Mineral Park)

Maine Pegmatite Workshop 2026

09-16-2026 @ 10:00 AM - 09-20-2026@ 05:00 PM

Maine Mineral & Gem Museum + Local Pegmatites

April Astronomy Nights: Western Maine Star Chasers

04-10-2026 @ 08:00 PM - 04-18-2026@ 09:30 PM

Tom Hoffelder Observatory, Parking Area for Long Mountain Trail, 1268 Vernon St., Albany TWP, ME

Oxford County Mineral & Gem Association Live Mineral Auction at MMGM

03-06-2026 @ 06:00 PM - 03-06-2026

Maine Mineral & Gem Museum

MMGM Storyhour @ Bethel Library: Famous Women Geologists and Scientists!

03-19-2026 @ 03:00 PM - 03-19-2026@ 04:00 PM

Bethel Library, 6 Broad St., Bethel, Maine

CANCELED DUE TO CLOUDS! Western Maine Star Chasers: A Glimpse of Mercury and the Moon

02-18-2026 @ 05:30 PM - 02-18-2026

The Gem Theater Parking Lot, 48 Cross St., Bethel, Maine

MMGM Valentine’s Day Jewelry Sale

02-05-2026 @ 12:00 AM - 02-08-2026@ 11:59 PM

MMGM 99 Main St., Bethel ME 04217

MMGM Storyhour @ Bethel Library: It’s Elemental!

02-19-2026 @ 03:00 PM - 02-19-2026@ 04:00 PM

Bethel Library, 6 Broad St., Bethel, Maine 04217

OCMGA Monthly Meeting and Arkansas Planerite Lecture

02-06-2026 @ 06:00 PM - 02-06-2026@ 07:30 PM

MMGM Discovery Gallery

Seminar or Talk

MMGM Pop-Up at Mr. Drew and His Animals Too Grand Opening

01-17-2026 @ 10:00 AM - 01-17-2026@ 05:00 PM

Mr. Drew and His Animals Too, 1395 Maine Street, Poland, ME

CANCELED! Amazing Planet Views with Tom Hoffelder | Western Maine Star Chasers Astronomy Club

01-23-2026 @ 05:30 PM - 01-24-2026@ 07:30 PM

The Gem Theater – Parking Lot, 48 Cross Street, Bethel, Maine

CANCELLED! January Astronomy Night at the Hoffelder Observatory

01-17-2026 @ 05:30 PM - 01-17-2026@ 09:30 PM

Hoffelder Observatory Long Mountain Trail parking area 1268 Vernon Street, Albany Township, Maine

MMGM Storyhour @ Bethel Library: Julie the Rock Hound

01-15-2026 @ 03:00 PM - 01-15-2026@ 04:00 PM

Bethel Library, 6 Broad St., Bethel ME