Quick Links : The Mindat Manual The Rock H. Currier Digital Library Mindat Newsletter [Free Download]

Home Page About Mindat The Mindat Manual History of Mindat Copyright Status Who We Are Contact Us Advertise on Mindat

Donate to Mindat Corporate Sponsorship Sponsor a Page Sponsored Pages Mindat Advertisers Advertise on Mindat

Learning Center What is a mineral?The most common minerals on earth Information for Educators Mindat Articles The Elements The Rock H. Currier Digital Library Geologic Time Explore Fossils

Minerals by Properties Minerals by Chemistry Mineral Visual Explorer Advanced Locality Search Random Mineral Random Locality Search by minID Localities Near Me Search Articles Search Glossary More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Mining Companies Statistics Users Mineral Museums Clubs & Organizations Mineral Shows & Events The Mindat Directory Device Settings The Mineral Quiz Time Machine

Photo Search Photo Galleries Search by Color Photo Colour Explorer New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

Lookout Point (Thomsonite Hill), Eagle Harbor Township, Keweenaw County, Michigan, USA i
Regional Level Types
Lookout Point (Thomsonite Hill) Point
Eagle Harbor Township Township
Keweenaw County County
Michigan State
USA Country

Regional Level Types
Lookout Point (Thomsonite Hill)	Point
Eagle Harbor Township	Township
Keweenaw County	County
Michigan	State
USA	Country

This page is currently not sponsored. Click here to sponsor this page.

Photos Maps Search

Standard

All Photos (2)Specimen Photos (1)Locality Photos (1)Photos by Color Add Photo

Map Pages Nearest Localities

Mineral Search Similar Localities Nearest Localities Predictive Mineralogy Search Google

Collector digging

Lookout Point, Eagle Harbor Township, Keweenaw County, Michigan, USA

Native Copper, etc.

Lookout Point, Eagle Harbor Township, Keweenaw County, Michigan, USA

Collector digging

Lookout Point, Eagle Harbor Township, Keweenaw County, Michigan, USA

Native Copper, etc.

Lookout Point, Eagle Harbor Township, Keweenaw County, Michigan, USA

Collector digging

Lookout Point, Eagle Harbor Township, Keweenaw County, Michigan, USA

Native Copper, etc.

Lookout Point, Eagle Harbor Township, Keweenaw County, Michigan, USA

Latitude & Longitude (WGS84):

47° 26' 26'' North , 88° 9' 11'' West

Latitude & Longitude (decimal):

Type:

Köppen climate type:

Dfb : Warm-summer humid continental climate

Nearest Settlements:

Place	Population	Distance
Copper Harbor	108 (2017)	20.1km
Ahmeek	146 (2017)	24.2km
Copper City	187 (2017)	24.8km
Calumet	703 (2017)	31.3km
Laurium	1,941 (2017)	31.4km

Nearest Clubs:
Local clubs are the best way to get access to collecting localities

Club	Location	Distance
Copper Country Rock and Mineral Club	Dollar Bay, Michigan	45km

Mindat Locality ID:

54522

Long-form identifier:

mindat:1:2:54522:3

GUID (UUID V4):

A ridge located in between the settlements of Deleware and Eagle Harbor. Local collectors regard this area as the best location in the Keweenaw to search for thomsonite.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

8 valid minerals.

Detailed Mineral List:

ⓘ Analcime

Formula: Na(AlSi₂O₆) · H₂O

References:

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

ⓘ Chrysocolla

Formula: Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1

References:

Allan Blaske collection. Malachite and chrysocolla identified by Travis Olds by XRD. Native copper by visual ID.Identification: Visual Identification, XRD

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

References:

Allan Blaske collection. Malachite and chrysocolla identified by Travis Olds by XRD. Native copper by visual ID.Identification: Visual Identification, XRD

ⓘ Mesolite

Formula: Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O

References:

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

ⓘ Native Copper

Formula: Cu

References:

Allan Blaske collection. Malachite and chrysocolla identified by Travis Olds by XRD. Native copper by visual ID.Identification: Visual Identification, XRD

ⓘ Natrolite

Formula: Na₂Al₂Si₃O₁₀ · 2H₂O

References:

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

ⓘ Prehnite

Formula: Ca₂Al₂Si₃O₁₀(OH)₂

References:

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

ⓘ Thomsonite-Ca

Formula: NaCa₂[Al₅Si₅O₂₀] · 6H₂O

References:

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

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu
Group 5 - Nitrates and Carbonates
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
Group 9 - Silicates
ⓘ	Prehnite	9.DP.20	Ca₂Al₂Si₃O₁₀(OH)₂
ⓘ	Chrysocolla	9.ED.20	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
ⓘ	Mesolite	9.GA.05	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
ⓘ	Natrolite	9.GA.05	Na₂Al₂Si₃O₁₀ · 2H₂O
ⓘ	Thomsonite-Ca	9.GA.10	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
ⓘ	Analcime	9.GB.05	Na(AlSi₂O₆) · H₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
H	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
H	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
H	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
H	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
H	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
C	Carbon
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	Oxygen
O	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
O	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
O	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
O	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
Na	Sodium
Na	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Na	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Na	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Na	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
Al	Aluminium
Al	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Al	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Al	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Al	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Al	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Al	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
Si	Silicon
Si	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Si	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Si	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Si	ⓘ Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O
Si	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Si	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
Ca	Calcium
Ca	ⓘ Mesolite	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Ca	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Ca	ⓘ Thomsonite-Ca	NaCa₂[Al₅Si₅O₂₀] · 6H₂O
Cu	Copper
Cu	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Cu	ⓘ Native Copper	Cu
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Mid-continent DomainDomain
Mid-continent RiftNarrow Rift

USA

Michigan
- Keweenaw PeninsulaPeninsula
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

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

Quick NavTop Mineral List Other Regions References

Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 4, 2026 05:25:18 Page updated: February 21, 2026 21:37:08

Go to top of page