Starting with the Lower Peninsula first - Michigan's Upper Peninsula field collecting info is located lower on the page.
Michigan's Lower Peninsula
(2018) Calcite, pyrite, gypsum and some nice marcasites was found this day. In my collecting I focused on the Calcites.
Bay Port, Michigan
(2009) Jim Adams takes you on a trip into Mchigan's thumb in search of calcite, quartz, fossils and millerite.
Northern Lower Michigan
(2008) Michigan's great lake shores provide not only an opportunity for a relaxing weekend but a super way to build your rock collection. jim Adams discovers a special beach with Petoskey stones, Fossil Corals, Agate and even a littel vug of quartz crystals.
Collecting Brachiopods, Petoskey Stones, in Charlevoi and then down to South Haven Michigan for Septarian nodules and a pudding stone. Story by Mike Streeter.
Here is a link to a very old (1962) State of Michigan pamphlet on rock and minerals field collecting in MIchigan. (PDF file)
Michigan Basin Geological Society Guide Book For Field Trips; May 6-10, 1970. You will need to click on the view open link - it will download to your computer; hosted on the umich.edu site.
The link above will take you to the Apena fossil hunting thread but there are also sections on fossil identification, fossil fakes and all about fossil hunting, enjoy!
Ever wondoe what you can find in a Michigan gravel pit? How about Petoskey Stones, Aragonite, Calcite and Pyrite crystals. Another story by Mike Streeter
Gypsum crystals, cryptocrystalline gypsum -alabaster, fossil shark teeth and shark poop. Short trip report from Sauktown sales. Note - this site is now closed to public collecting due to rock fall hazard. We were lucky to have this collecting site as long as we did.
Covers both Upper and Lower Peninsula
Michigan rock and mineral field collecting - Upper Peninsula sites
An excellent article on Mindat.org by Larry Maltby. Mineral and agate collecting around the Keweenaw Point area.
Jim Adam documents the lost of a Almandine pseudo garnet site which contained some of the largest garnets in the state; he then collects some schori, magnetite, siderite and quartz. He acquires a goethite and gets to go underground at the Caledonia mine to extract some native Michigan copper and datolite.
An exceptional overview of the extensive mineral and rock collecting opportunities available to rockhounds in Michignan's Upper Peninsula - From ExploringTheNorth.com
For the novice, field collecting of rocks and minerals is best done with clubs or at fee based collecting sites. You are responsible for your own safety!
Below I am collecting links to stories and resources on field collecting in Michigan.
updated in 2019
Field Collecting rocks and minerals in Michigan
I do not need to say this do I - Prior to doing any field collection you must obtain approval from the land owner.
The links here will take you to information on rock and mineral collecting sites in Michigan. It is up to you to determine your right to collect at these sites. On public lands, state and federal, do check with the local office as to their rock collecting rules. While there are general rules governing rock collecting on public land, each site can establish its own land use provisions. When collecting on Michigan lake shores you should keep in mind, the water along the beach may be public but the land along the shore maybe private - as soon as you step out of the water on to a private beach you are trespassing.
Note - Michigan law (2017) prohibits removing more than 25 pounds of rocks or minerals per year from state-owned lands, including the bottomlands of the great lakes. Some state areas may not allow removal of any minerals or fossils from the land. It is your duty to check with the authorities before disturbing the soil.
A Few Useful Links - for planning your own trip to Michigan’s U P