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Laurium Mine, Osceola Township, Houghton County, Michigan, USA i
Regional Level Types
Laurium Mine Mine
Osceola Township Township
Houghton County County
Michigan State
USA Country

Regional Level Types
Laurium Mine	Mine
Osceola Township	Township
Houghton County	County
Michigan	State
USA	Country

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Laurium Mine Dumps

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Tailings pile for the Laurium Mine

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Kinoite

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Laurium Mine Dumps

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Tailings pile for the Laurium Mine

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Kinoite

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Laurium Mine Dumps

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Tailings pile for the Laurium Mine

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Latitude & Longitude (WGS84):

47° 13' 6'' North , 88° 27' 42'' West

Latitude & Longitude (decimal):

Type:

Köppen climate type:

Dfb : Warm-summer humid continental climate

Nearest Settlements:

Place	Population	Distance
Laurium	1,941 (2017)	2.5km
Calumet	703 (2017)	3.2km
Lake Linden	989 (2017)	4.9km
Hubbell	946 (2017)	5.6km
Copper City	187 (2017)	9.2km

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	12km

Mindat Locality ID:

14112

Long-form identifier:

mindat:1:2:14112:4

GUID (UUID V4):

Introduction
An underground copper mine located just south of Laurium.

History
The prospect was discovered in 1904 by diamond drilling exploration, and a shaft was sunk in 1907. In 1909, the Calumet and Hecla Consolidated Copper Company took over operations and continued mining until 1920 when the mine closed because of water problems. The shaft reached the 12th level (approximately 1,660 feet deep) and some exploratory drifting was done.

For the collector
For variety of minerals, Laurium provides perhaps the best collecting in the Keweenaw, especially for the micro-mineral collector.

Select Mineral List Type

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

19 valid minerals.

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

ⓘ 'Amygdaloidal basalt'

ⓘ Scoria

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.

ⓘ Atacamite

Formula: Cu₂(OH)₃Cl

References:

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

ⓘ Baryte

Formula: BaSO₄

References:

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

ⓘ Calcite

Formula: CaCO₃

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Chalcocite

Formula: Cu₂S

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ 'Chlorite Group'

References:

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

ⓘ Cuprite

Formula: Cu₂O

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Datolite

Formula: CaB(SiO₄)(OH)

Habit: Crystals and nodules

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Epidote

Formula: (CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Hematite

Formula: Fe₂O₃

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ 'K Feldspar'

References:

Travis Olds collection

ⓘ 'K Feldspar var. Adularia'

Formula: KAlSi₃O₈

References:

Travis Olds collection

ⓘ Kinoite

Formula: Ca₂Cu₂(H₂O)₂[Si₃O₁₀]

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Microcline

Formula: K(AlSi₃O₈)

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Native Copper

Formula: Cu

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Native Silver

Formula: Ag

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Pumpellyite-(Fe2+)

Formula: Ca₂Fe²⁺Al₂[Si₂O₆OH][SiO₄](OH)₂(OH)

References:

Travis Olds collectionIdentification: Visual Identification

ⓘ Pumpellyite-(Mg)

Formula: Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)

References:

www.sauktown sales.com

ⓘ 'Pumpellyite Subgroup'

Formula: Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

ⓘ Quartz

Formula: SiO₂

References:

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

✪ Saponite

Formula: Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O

Habit: Radial sprays of white acicular crystals to 1 mm!

Colour: White, sometimes has light red or green coloring.

Description: Any crystals of smectite are astonishing. This locality and several nearby produce the world's best saponite crystals.

References:

Collection Elmar Lackner

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

Gallery:

K(AlSi₃O₈)ⓘ Microcline

Microcline, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Microcline, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Microcline, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Agⓘ Native Silver

Native Silver, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Native Silver, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Native Silver, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)ⓘ Pumpellyite-(Mg)

Pumpellyite-(Mg), etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Pumpellyite-(Mg), etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Pumpellyite-(Mg), etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂Aⓘ 'Pumpellyite Subgroup'

Pumpellyite Subgroup, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Pumpellyite Subgroup, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Pumpellyite Subgroup, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂Oⓘ Saponite

Saponite, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Saponite, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Saponite, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Saponite, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Saponite, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Saponite, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Saponite, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

Saponite, etc.

Laurium Mine, Osceola Township, Houghton County, Michigan, USA

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu
ⓘ	Native Silver	1.AA.05	Ag
Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcocite	2.BA.05	Cu₂S
Group 3 - Halides
ⓘ	Atacamite	3.DA.10a	Cu₂(OH)₃Cl
Group 4 - Oxides and Hydroxides
ⓘ	Cuprite	4.AA.10	Cu₂O
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Baryte	7.AD.35	BaSO₄
Group 9 - Silicates
ⓘ	Datolite	9.AJ.20	CaB(SiO₄)(OH)
ⓘ	Epidote	9.BG.05a	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Pumpellyite-(Fe2+)	9.BG.20	Ca₂Fe²⁺Al₂[Si₂O₆OH][SiO₄](OH)₂(OH)
ⓘ	Pumpellyite-(Mg)	9.BG.20	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
ⓘ	Kinoite	9.BH.10	Ca₂Cu₂(H₂O)₂[Si₃O₁₀]
ⓘ	Saponite	9.EC.45	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
ⓘ	Microcline	9.FA.30	K(AlSi₃O₈)
ⓘ	Analcime	9.GB.05	Na(AlSi₂O₆) · H₂O
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
Unclassified
ⓘ	'K Feldspar var. Adularia'	-	KAlSi₃O₈
ⓘ	'Chlorite Group'	-
ⓘ	'Pumpellyite Subgroup'	-	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
ⓘ	'K Feldspar'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
H	ⓘ Atacamite	Cu₂(OH)₃Cl
H	ⓘ Datolite	CaB(SiO₄)(OH)
H	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Kinoite	Ca₂Cu₂(H₂O)₂[Si₃O₁₀]
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
H	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
H	ⓘ Pumpellyite-(Fe2+)	Ca₂Fe²⁺Al₂[Si₂O₆OH][SiO₄](OH)₂(OH)
H	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
H	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
B	Boron
B	ⓘ Datolite	CaB(SiO₄)(OH)
C	Carbon
C	ⓘ Calcite	CaCO₃
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	Oxygen
O	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
O	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	ⓘ Atacamite	Cu₂(OH)₃Cl
O	ⓘ Baryte	BaSO₄
O	ⓘ Calcite	CaCO₃
O	ⓘ Cuprite	Cu₂O
O	ⓘ Datolite	CaB(SiO₄)(OH)
O	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Kinoite	Ca₂Cu₂(H₂O)₂[Si₃O₁₀]
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
O	ⓘ Pumpellyite-(Fe2+)	Ca₂Fe²⁺Al₂[Si₂O₆OH][SiO₄](OH)₂(OH)
O	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
O	ⓘ Quartz	SiO₂
O	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Na	Sodium
Na	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Mg	Magnesium
Mg	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Mg	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Al	Aluminium
Al	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Al	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Al	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Microcline	K(AlSi₃O₈)
Al	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
Al	ⓘ Pumpellyite-(Fe2+)	Ca₂Fe²⁺Al₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Al	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Al	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Si	Silicon
Si	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
Si	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Si	ⓘ Datolite	CaB(SiO₄)(OH)
Si	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Kinoite	Ca₂Cu₂(H₂O)₂[Si₃O₁₀]
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Microcline	K(AlSi₃O₈)
Si	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
Si	ⓘ Pumpellyite-(Fe2+)	Ca₂Fe²⁺Al₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Si	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Si	ⓘ Quartz	SiO₂
Si	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
S	Sulfur
S	ⓘ Baryte	BaSO₄
S	ⓘ Chalcocite	Cu₂S
Cl	Chlorine
Cl	ⓘ Atacamite	Cu₂(OH)₃Cl
K	Potassium
K	ⓘ K Feldspar var. Adularia	KAlSi₃O₈
K	ⓘ Microcline	K(AlSi₃O₈)
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Datolite	CaB(SiO₄)(OH)
Ca	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Kinoite	Ca₂Cu₂(H₂O)₂[Si₃O₁₀]
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
Ca	ⓘ Pumpellyite-(Fe2+)	Ca₂Fe²⁺Al₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Ca	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Ca	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Fe	Iron
Fe	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Pumpellyite-(Fe2+)	Ca₂Fe²⁺Al₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Fe	ⓘ Saponite	Ca_0.25(Mg,Fe)₃((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Cu	Copper
Cu	ⓘ Atacamite	Cu₂(OH)₃Cl
Cu	ⓘ Chalcocite	Cu₂S
Cu	ⓘ Cuprite	Cu₂O
Cu	ⓘ Native Copper	Cu
Cu	ⓘ Kinoite	Ca₂Cu₂(H₂O)₂[Si₃O₁₀]
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Ag	Silver
Ag	ⓘ Native Silver	Ag
Ba	Barium
Ba	ⓘ Baryte	BaSO₄

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

Cornwall, H.R., Wright, J.C. (1956) Geologic Map of the Laurium Quadrangle, Michigan. United States Geological Survey Map MF-47, scale 1:24,000.

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.109

The Copper Country Rock & Mineral Club (2001) Red Gold and Tarnished Silver, 2nd edition. Self-Published. 44 pages.

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

Kaminski-Hamka, Terry (2011) Copper Mines of Houghton County, Michigan. Copperlady Press.

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Laurium Mine, Osceola Township, Houghton County, Michigan, USAiRegional Level TypesLaurium MineMine Osceola TownshipTownship Houghton CountyCounty MichiganState USACountry

Select Mineral List Type

Commodity List

Mineral List

Rock Types Recorded

Select Rock List Type

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Laurium Mine, Osceola Township, Houghton County, Michigan, USA i
Regional Level Types
Laurium Mine Mine
Osceola Township Township
Houghton County County
Michigan State
USA Country