Between 1846 and 1849, the Ohio & Isle Royale Company mined this site. The mine was named because of the abundance of datolite found in the two veins that crossed the property. This location is accessible only by boat as no trails lead to the site.

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Copper

Mineral List

ⓘ Native Copper

1 valid mineral.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Basalt

Detailed Mineral List:

ⓘ Native Copper

Formula: Cu

References:

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu

List of minerals for each chemical element

Cu	Copper
Cu	ⓘ Native Copper	Cu

Other Databases

Link to USGS MRDS:	10082647

Other Regions, Features and Areas containing this locality

North AmericaContinent

Lake SuperiorLake

North America PlateTectonic Plate

Mid-continent DomainDomain
Mid-continent RiftNarrow Rift

USA

Midcontinent RiftGeologic Province

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Lane, A.C. (1898) Upper Peninsula 1893-1897, Geologic Report on Isle Royale, Michigan. Geological Survey of Michigan: 6(1), 281 pages.

Huber, N.K. (1973) Geologic Map of Isle Royale National Park, Keweenaw County, Michigan: United States Geological Survey, Miscellaneous Geologic Investigations Map I-796, scale 1:62,500.

Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.

Kaminski-Hamka, T. (2011) The Copper Mines of Keweenaw County, Michigan. Copperlady Press. 150 pages.

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Datolite Mine, Isle Royale National Park, Keweenaw County, Michigan, USAiRegional Level TypesDatolite MineMine Isle Royale National ParkNational Park Keweenaw CountyCounty MichiganState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }