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Robbins Mine (West Vein Mine), Phoenix, Houghton Township, Keweenaw County, Michigan, USA i
Regional Level Types
Robbins Mine (West Vein Mine) Mine
Phoenix Unincorporated Community
Houghton Township Township
Keweenaw County County
Michigan State
USA Country

Regional Level Types
Robbins Mine (West Vein Mine)	Mine
Phoenix	Unincorporated Community
Houghton Township	Township
Keweenaw County	County
Michigan	State
USA	Country

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Predictive Mineralogy

Tailings pile to the Robbins West Vein

Robbins Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA

Calcite, etc.

Robbins Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA

Native Copper, etc.

Robbins Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA

Tailings pile to the Robbins West Vein

Robbins Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA

Calcite, etc.

Robbins Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA

Native Copper, etc.

Robbins Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA

Tailings pile to the Robbins West Vein

Robbins Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA

Calcite, etc.

Robbins Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA

Latitude & Longitude (WGS84):

47° 23' 15'' North , 88° 17' 18'' West

Latitude & Longitude (decimal):

Type:

Köppen climate type:

Dfb : Warm-summer humid continental climate

Nearest Settlements:

Place	Population	Distance
Ahmeek	146 (2017)	12.8km
Copper City	187 (2017)	13.7km
Calumet	703 (2017)	20.0km
Laurium	1,941 (2017)	20.3km
Lake Linden	989 (2017)	23.3km

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	34km

Mindat Locality ID:

26192

Long-form identifier:

mindat:1:2:26192:3

GUID (UUID V4):

Little is known of the original Robbins Mine other than it was operated by the Robbins Mining Company between 1860 and 1903 and three shafts were sunk into the fissure vein along the Greenstone Flow. In 1903, the Phoenix Consolidated Copper Company bought the property and renamed it the West Vein. One shaft was widened, cleared, and re-timbered by Phoenix in hopes of discovering good ore; however, this was not the case. Some mass copper was found, but not enough to make a profit and the mine was abandoned sometime after 1905. Today, the mine privately owned and off limits to collectors and visitors. Before it was sold, collectors were finding copper, silver, datolite, analcime, and apophyllite in the piles.

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

ⓘ Baryte

ⓘ Calcite

ⓘ Epidote

ⓘ Fluorapophyllite-(K)

10 valid minerals.

Detailed Mineral List:

ⓘ 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:

Rosemeyer, Tom (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District (Part 1) Rocks & Minerals, 84 (4) 298-306 doi:10.3200/rmin.84.4.298-306part1

ⓘ Epidote

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

References:

Personal observation- Jim Daly

ⓘ Fluorapophyllite-(K)

Formula: KCa₄(Si₈O₂₀)(F,OH) · 8H₂O

References:

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

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

References:

Personal observation- Jim Daly

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

References:

Personal observation- Jim Daly

ⓘ Native Copper

Formula: Cu

References:

USGS PP144

Personal observation- Jim Daly

Rosemeyer, Tom (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District (Part 1) Rocks & Minerals, 84 (4) 298-306 doi:10.3200/rmin.84.4.298-306part1

ⓘ Prehnite

Formula: Ca₂Al₂Si₃O₁₀(OH)₂

References:

Personal observation- Jim Daly

ⓘ Pumpellyite-(Mg)

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

References:

Personal observation- Jim Daly

ⓘ Quartz

Formula: SiO₂

References:

Personal observation- Jim Daly

Rosemeyer, Tom (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District (Part 1) Rocks & Minerals, 84 (4) 298-306 doi:10.3200/rmin.84.4.298-306part1

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu
Group 4 - Oxides and Hydroxides
ⓘ	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
ⓘ	Epidote	9.BG.05a	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Pumpellyite-(Mg)	9.BG.20	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
ⓘ	Prehnite	9.DP.20	Ca₂Al₂Si₃O₁₀(OH)₂
ⓘ	Fluorapophyllite-(K)	9.EA.15	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
H	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
H	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
C	Carbon
C	ⓘ Calcite	CaCO₃
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	Oxygen
O	ⓘ Baryte	BaSO₄
O	ⓘ Calcite	CaCO₃
O	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
O	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
O	ⓘ Quartz	SiO₂
F	Fluorine
F	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
Mg	Magnesium
Mg	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Al	Aluminium
Al	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Al	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Si	Silicon
Si	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Si	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Si	ⓘ Quartz	SiO₂
S	Sulfur
S	ⓘ Baryte	BaSO₄
K	Potassium
K	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Prehnite	Ca₂Al₂Si₃O₁₀(OH)₂
Ca	ⓘ Pumpellyite-(Mg)	Ca₂MgAl₂[Si₂O₆OH][SiO₄](OH)₂(OH)
Fe	Iron
Fe	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Cu	Copper
Cu	ⓘ Native Copper	Cu
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
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

Stevens, Horace J. (1902) The Copper Handbook Vol. 2 - A Manual of the Copper Industry of the United States and Foreign Countries. Self-published. 504pp.

Cornwall, H.R. (1954) Bedrock Geology of the Phoenix Quadrangle, Michigan. Map GQ-34, United States Geological Survey.Scale 1:24,000

Clarke, D.H. (1974) Copper Mines of Keweenaw: Lake Superior and Phoenix Mining Companies, No. 4. Self-Published. 32 pages.

Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.111

The Copper Country Rock & Mineral Club (2001) Red Gold and Tarnished Silver (2nd ed.). Self-published. 44pp.

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

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Select Mineral List Type

Commodity List

Mineral List

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