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Sheldon-Columbian Mine, Houghton, Houghton County, Michigan, USAi
Regional Level Types
Sheldon-Columbian MineMine
HoughtonCity
Houghton CountyCounty
MichiganState
USACountry

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Latitude & Longitude (WGS84):
47° 6' 59'' North , 88° 33' 50'' West
Latitude & Longitude (decimal):
47.11639,-88.56389
GeoHash:
G#:f03h09m8z
GRN:
N32W44
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Houghton7,970(2017)0.7km
Hancock4,555(2017)1.7km
Dollar Bay1,082(2017)4.0km
South Range746(2017)7.9km
Hubbell946(2017)12.0km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Copper Country Rock and Mineral ClubDollar Bay, Michigan4km
Mindat Locality ID:
21719
Long-form identifier:
mindat:1:2:21719:9
GUID (UUID V4):
0


In June of 1864, the Sheldon Mining Company and the Columbian Mining Company merged, forming the Sheldon and Columbian Copper Company. At the time of the merger, the Columbian had two working shafts; the Sheldon five. After the merger, three of the shafts were closed and used for winzes to connect operating levels of the mine. The remaining four were named Stewert No. 1, Stebbins No. 2, Banker No. 3, and Bloodgood No. 4 (thought to be the mine captains at the time of merger). The mine worked the Isle Royale lode, which was known at the time to be rich in copper and silver. Operations continued until 1870 when erratic mineralization of the lode at depth forced the company to close. Since the opening of the Sheldon in 1853, 1,463,000 lbs. of copper were mined from this location. Copper crystals, silver, datolite, and chalcocite can be found here.

Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Commodity List

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


Mineral List

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

11 valid minerals.

Detailed Mineral List:

ⓘAlgodonite
Formula:(Cu1-xAsx)
ⓘCalcite
Formula:CaCO3
Habit: Massive
Colour: white
Fluorescence: none
Description: Calcite is a common mineral in the Sheldon-Columbian mine.
ⓘDatolite
Formula:CaB(SiO4)(OH)
Habit: nodules and veins of pale white datolite.
Colour: white
Fluorescence: none
Description: In May 2014 a 10 year old boy discovered a "nest" of a mineral that turned out to be datolite on the eastern side of the rock pile. he found several small nodules that were identified as datolite.
References:
Yalmer Primeau
ⓘDomeykite
Formula:Cu3As
References:
Dana 7:I:172.
ⓘEpidote
Formula:(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Habit: massive light green epidote
Colour: green
Fluorescence: none
Description: massive epidote. Collected May 22 2014
ⓘMalachite
Formula:Cu2(CO3)(OH)2
ⓘNative Copper
Formula:Cu
ⓘNative Silver
Formula:Ag
References:
Yalmer Primeau
ⓘOlivenite
Formula:Cu2(AsO4)(OH)
ⓘQuartz
Formula:SiO2
Fluorescence: none
Description: Previous entry made for find at Grand Portage Mine dump about 350 meters southwest. The dump was mistaken for the Sheldon-Columbian Mine. Although never officially recorded, it is doubtless that quartz occurs at the Sheldon-Columbian Mine due to its placement on the Isle Royale lode.
ⓘQuartz var. Milky Quartz
Formula:SiO2
Habit: cluster of milky quartz crystals
Colour: white
ⓘTenorite
Formula:CuO
Habit: black coating on copper
Colour: black
Fluorescence: none
Description: Pieces of copper and datolite vein pieces with a black coating has been found by Yalmer Primeau on May 17 2014. Visually identified by him as tenorite

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
ⓘNative Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
ⓘAlgodonite2.AA.10a(Cu1-xAsx)
ⓘDomeykite2.AA.10bCu3As
Group 4 - Oxides and Hydroxides
ⓘTenorite4.AB.10CuO
ⓘQuartz4.DA.05SiO2
ⓘvar. Milky Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘOlivenite8.BB.30Cu2(AsO4)(OH)
Group 9 - Silicates
ⓘDatolite9.AJ.20CaB(SiO4)(OH)
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)

List of minerals for each chemical element

HHydrogen
HⓘDatoliteCaB(SiO4)(OH)
HⓘEpidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
HⓘMalachiteCu2(CO3)(OH)2
HⓘOliveniteCu2(AsO4)(OH)
BBoron
BⓘDatoliteCaB(SiO4)(OH)
CCarbon
CⓘCalciteCaCO3
CⓘMalachiteCu2(CO3)(OH)2
OOxygen
OⓘCalciteCaCO3
OⓘDatoliteCaB(SiO4)(OH)
OⓘEpidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
OⓘMalachiteCu2(CO3)(OH)2
OⓘOliveniteCu2(AsO4)(OH)
OⓘQuartzSiO2
OⓘTenoriteCuO
OⓘQuartz var.Milky QuartzSiO2
AlAluminium
AlⓘEpidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
SiSilicon
SiⓘDatoliteCaB(SiO4)(OH)
SiⓘEpidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
SiⓘQuartzSiO2
SiⓘQuartz var.Milky QuartzSiO2
CaCalcium
CaⓘCalciteCaCO3
CaⓘDatoliteCaB(SiO4)(OH)
CaⓘEpidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
FeIron
FeⓘEpidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
CuCopper
CuⓘAlgodonite(Cu1-xAsx)
CuⓘNative CopperCu
CuⓘDomeykiteCu3As
CuⓘMalachiteCu2(CO3)(OH)2
CuⓘOliveniteCu2(AsO4)(OH)
CuⓘTenoriteCuO
AsArsenic
AsⓘAlgodonite(Cu1-xAsx)
AsⓘDomeykiteCu3As
AsⓘOliveniteCu2(AsO4)(OH)
AgSilver
AgⓘNative SilverAg

Localities in this Region

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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, pleaseregister so you can add to our database. This locality information is for reference purposes only. You should never attempt tovisit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holdersfor access and that you are aware of all safety precautions necessary.

References

(1902) A Manual of the Copper Industry of the United States and Foreign Countries.The Copper Handbook Vol. 2. Horace J. Stevens
Butler, B.S., Burbank, W.S. (1929) The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pp.
Palache, Charles, Berman, Harry, Frondel, Clifford (1944)The System of Mineralogy (7th ed.) Vol. 1 - Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, New York.
Kilpela, T. (1995) The Hard Rock Mining Era in the Copper Country. Self-Published. 89 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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