Isle Royale Greenstone
Rockhounding site in Copper Harbor, Michigan · Other
Isle Royale Greenstone is a chlorastrolite rockhounding site near Copper Harbor, MI. Fee varies. Best season: Summer ferry access.
Typical season: Summer ferry access
Key facts
Structured details for trip planning — verify access and fees with the land manager before you visit.
- Specimen type
- Chlorastrolite
- Primary specimens
- Chlorastrolite, Agate, Copper
- Fee status
- Fee varies
- Nearest town
- Copper Harbor
- State
- Michigan
- Coordinates
- 47.99000, -89.55000
- Best season
- Summer ferry access
- Access difficulty
- Moderate island wilderness
- Camping
- Isle Royale backcountry permits
- Activities
- Greenstone geology observation
- Facilities
- Park visitor centers
- Last updated
- July 5, 2026
What to pack for Isle Royale Greenstone
Gear we compare for other trips like this one — tools, safety, and the hike in.
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The experience
- Best time to visitSummer ferry access
- AccessModerate island wilderness
- FacilitiesPark visitor centers
- Camping nearbyIsle Royale backcountry permits
Things you need to take to Isle Royale Greenstone
DEWALT DPG82 Concealer Safety Glasses
Buy two pairs — one lives in your pack permanently.
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SE Specimen Storage Bags 10-Pack
The basic system every collector should have in their pack.
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Osprey Talon 22 Backpack
The pack to save for if you collect more than a few times a year.
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NoCry Professional Construction Knee Pads
Buy once — your knees will notice by lunch.
Check price on AmazonDisclosure: Gear links may earn a commission as an Amazon Associate — at no extra cost to you. Learn more.
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Report an access change
Field conditions change. If this site is closed, claimed, flooded, or the fee has changed, tell us — we update listings with community tips and desk verification.
Include the date you visited and any land-manager contact. Do not share private gate codes.
Map & location
Sources & updates
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