Baltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA i
Regional Level Types
Baltic Mine Mine
Baltic Unincorporated Community
Adams Township Township
Houghton County County
Michigan State
USA Country

Regional Level Types
Baltic Mine	Mine
Baltic	Unincorporated Community
Adams Township	Township
Houghton County	County
Michigan	State
USA	Country

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Latitude & Longitude (WGS84):

47° 4' 6'' North , 88° 37' 19'' West

Latitude & Longitude (decimal):

G#: f02gz2e68

Type:

Köppen climate type:

Dfb : Warm-summer humid continental climate

Nearest Settlements:

Place	Population	Distance
South Range	746 (2017)	1.6km
Houghton	7,970 (2017)	7.2km
Hancock	4,555 (2017)	7.2km
Dollar Bay	1,082 (2017)	10.1km
Hubbell	946 (2017)	18.7km

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	10km

Mindat Locality ID:

8551

Long-form identifier:

mindat:1:2:8551:2

GUID (UUID V4):

d8c7d0f7-81c0-4eb8-adb3-1ae603e3a6ba

An underground copper mine near South Range, MI consisting of 5 shafts. Exploration work was started in 1882 and successfully discovered the Baltic Lode. Property was sold in 1897 and the Baltic Mining Co. was organized a month later. The mine was absorbed by Copper Range Co. in 1917 and mining ceased in 1931. #3 shaft was the deepest at 3,839 feet. The mine produced 276 million lbs. of refined copper over 34 years. Fine specimens of copper crystals, as well as copper sulphide minerals (bornite and chalcocite) can be found on the tailings piles.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.

ⓘ Copper

Mineral List

Mineral list contains entries from the region specified including sub-localities

17 valid minerals.

Detailed Mineral List:

ⓘ Anilite

Formula: Cu₇S₄

References:

Buchholz, T.W., Falster, A.U., Simmons, W.B. (2010) New Data on Minerals from the Keeweenaw copper district, MI. The 37th Rochester Mineralogical Symposium, April 15-18, 2010

ⓘ Ankerite

Formula: Ca(Fe²⁺,Mg)(CO₃)₂

References:

Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109.

ⓘ 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.

Buchholz, T.W., Falster, A.U., Simmons, W.B. (2010) New Data on Minerals from the Keeweenaw copper district, MI. The 37th Rochester Mineralogical Symposium, April 15-18, 2010

ⓘ Bornite

Formula: Cu₅FeS₄

References:

Rocks & Min.: 21:664

58:109.

ⓘ Calcite

Formula: CaCO₃

Locality: Baltic No. 2 shaft, Baltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA

Description: Pink variety misidentified as rhodochrosite

ⓘ Chalcocite

Formula: Cu₂S

References:

Rocks & Min.: 21:664

58:109.

Buchholz, T.W., Falster, A.U., Simmons, W.B. (2010) New Data on Minerals from the Keeweenaw copper district, MI. The 37th Rochester Mineralogical Symposium, April 15-18, 2010

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

Rocks & Min.: 21:664

58:109.

ⓘ Copper

Formula: Cu

References:

Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109.

Buchholz, T.W., Falster, A.U., Simmons, W.B. (2010) New Data on Minerals from the Keeweenaw copper district, MI. The 37th Rochester Mineralogical Symposium, April 15-18, 2010

ⓘ Dolomite

Formula: CaMg(CO₃)₂

Localities:

Baltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA
Baltic No. 2 shaft, Baltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA

References:

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

ⓘ Epidote

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

References:

Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109.

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

References:

Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109.

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109.

ⓘ Muscovite var. Sericite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109.

ⓘ Prehnite

Formula: Ca₂Al₂Si₃O₁₀(OH)₂

References:

USGS PP144

ⓘ 'Pumpellyite Subgroup'

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

References:

Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109.

ⓘ Pyrite

Formula: FeS₂

References:

Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109.

ⓘ Quartz

Formula: SiO₂

Localities:

Baltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA
Baltic No. 2 shaft, Baltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA

References:

Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109.

Buchholz, T.W., Falster, A.U., Simmons, W.B. (2010) New Data on Minerals from the Keeweenaw copper district, MI. The 37th Rochester Mineralogical Symposium, April 15-18, 2010

ⓘ Silver

Formula: Ag

References:

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

Buchholz, T.W., Falster, A.U., Simmons, W.B. (2010) New Data on Minerals from the Keeweenaw copper district, MI. The 37th Rochester Mineralogical Symposium, April 15-18, 2010

ⓘ Stromeyerite

Formula: AgCuS

References:

Buchholz, T.W., Falster, A.U., Simmons, W.B. (2010) New Data on Minerals from the Keeweenaw copper district, MI. The 37th Rochester Mineralogical Symposium, April 15-18, 2010

ⓘ 'Thomsonite Subgroup'

Locality: Baltic No. 2 shaft, Baltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA

Gallery:

Cuⓘ Copper

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Silver	1.AA.05	Ag
ⓘ	Copper	1.AA.05	Cu
Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcocite	2.BA.05	Cu₂S
ⓘ	Anilite	2.BA.10	Cu₇S₄
ⓘ	Bornite	2.BA.15	Cu₅FeS₄
ⓘ	Stromeyerite	2.BA.40	AgCuS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Ankerite	5.AB.10	Ca(Fe²⁺,Mg)(CO₃)₂
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Baryte	7.AD.35	BaSO₄
Group 9 - Silicates
ⓘ	Epidote	9.BG.05a	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Prehnite	9.DP.20	Ca₂Al₂Si₃O₁₀(OH)₂
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	var. Sericite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
Unclassified
ⓘ	'Pumpellyite Subgroup'	-	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
ⓘ	'Thomsonite Subgroup'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
H	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
H	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
C	Carbon
C	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
C	ⓘ Calcite	CaCO₃
C	ⓘ Dolomite	CaMg(CO₃)₂
O	Oxygen
O	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
O	ⓘ Baryte	BaSO₄
O	ⓘ Calcite	CaCO₃
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
O	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
O	ⓘ Quartz	SiO₂
O	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Mg	Magnesium
Mg	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Al	Aluminium
Al	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Al	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
Al	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	Silicon
Si	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Si	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
Si	ⓘ Quartz	SiO₂
Si	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
S	Sulfur
S	ⓘ Anilite	Cu₇S₄
S	ⓘ Baryte	BaSO₄
S	ⓘ Bornite	Cu₅FeS₄
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Chalcocite	Cu₂S
S	ⓘ Pyrite	FeS₂
S	ⓘ Stromeyerite	AgCuS
K	Potassium
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Ca	ⓘ Pumpellyite Subgroup	Ca₂XAl₂[Si₂O₆(OH)][SiO₄](OH)₂A
Fe	Iron
Fe	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
Fe	ⓘ Bornite	Cu₅FeS₄
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Pyrite	FeS₂
Cu	Copper
Cu	ⓘ Anilite	Cu₇S₄
Cu	ⓘ Bornite	Cu₅FeS₄
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Chalcocite	Cu₂S
Cu	ⓘ Copper	Cu
Cu	ⓘ Stromeyerite	AgCuS
Ag	Silver
Ag	ⓘ Silver	Ag
Ag	ⓘ Stromeyerite	AgCuS
Ba	Barium
Ba	ⓘ Baryte	BaSO₄

Localities in this Region

USA

Michigan
- Houghton County
  - Adams Township
    - Baltic
      - Baltic Mine
        Baltic No. 2 shaft

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

Mid-continent DomainDomain

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

Stevens, H.J. (1902) The Copper Handbook, Vol 2. Mining Gazette Press, Houghton, Michigan. 494 pages.

Butler, B.S., Burbank, W.S. (1929) The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pages.

Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109.

Buchholz, T.W., Falster, A.U., Simmons, W.B. (2010) New Data on Minerals from the Keweenaw copper district, MI. The 37th Rochester Mineralogical Symposium, April 15-18, 2010.

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