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Rockland Mine, Rockland, Ontonagon County, Michigan, USAi
Regional Level Types
Rockland MineMine
RocklandCensus-designated Place
Ontonagon CountyCounty
MichiganState
USACountry

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PhotosMapsSearch
06290860017272064335950.jpg
Native Copper

Rockland Mine, Rockland, Ontonagon County, Michigan, USA
00710600017272064341800.jpg
Native Copper

Rockland Mine, Rockland, Ontonagon County, Michigan, USA
06729440017272064349889.jpg
Datolite

Rockland Mine, Rockland, Ontonagon County, Michigan, USA
06290860017272064335950.jpg
Native Copper

Rockland Mine, Rockland, Ontonagon County, Michigan, USA
00710600017272064341800.jpg
Native Copper

Rockland Mine, Rockland, Ontonagon County, Michigan, USA
06729440017272064349889.jpg
Datolite

Rockland Mine, Rockland, Ontonagon County, Michigan, USA
06290860017272064335950.jpg
Native Copper

Rockland Mine, Rockland, Ontonagon County, Michigan, USA
00710600017272064341800.jpg
Native Copper

Rockland Mine, Rockland, Ontonagon County, Michigan, USA
Latitude & Longitude (WGS84):
46° 43' 58'' North , 89° 9' 53'' West
Latitude & Longitude (decimal):
46.73304,-89.16479
GRN:
N32W44
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Ontonagon1,324 (2017)19.1km
White Pine474 (2017)32.0km
Watersmeet428 (2017)51.7km
Mindat Locality ID:
33620
Long-form identifier:
mindat:1:2:33620:9
GUID (UUID V4):
0


The Rockland Mining Company was organized in 1853 and worked until 1870, when the company was shut down and passed into the National Mining Company. Work continued on tribute until 1880 when the mine closed for good. The Rockland Mine produced approx. 5.8 million lbs. of refined copper. The mine piles produce some quality copper, silver, and prehnite crystals.

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.


Mineral List


7 valid minerals.

Detailed Mineral List:

ⓘ Calcite
Formula: CaCO3
ⓘ 'Chlorite Group'
ⓘ Datolite
Formula: CaB(SiO4)(OH)
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'K Feldspar'
ⓘ Native Copper
Formula: Cu
ⓘ Native Silver
Formula: Ag
ⓘ Pumpellyite-(Mg)
Formula: Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
ⓘ Quartz
Formula: SiO2

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
ⓘNative Silver1.AA.05Ag
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘDatolite9.AJ.20CaB(SiO4)(OH)
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘPumpellyite-(Mg)9.BG.20Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Unclassified
ⓘ'Chlorite Group'-
ⓘ'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hⓘ DatoliteCaB(SiO4)(OH)
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
BBoron
Bⓘ DatoliteCaB(SiO4)(OH)
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
Oⓘ DatoliteCaB(SiO4)(OH)
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Oⓘ QuartzSiO2
MgMagnesium
Mgⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
AlAluminium
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
SiSilicon
Siⓘ DatoliteCaB(SiO4)(OH)
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Siⓘ QuartzSiO2
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ DatoliteCaB(SiO4)(OH)
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
FeIron
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
CuCopper
Cuⓘ Native CopperCu
AgSilver
Agⓘ Native SilverAg

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, 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

Henwood, W.J. (1871) Observations on Metalliferous Deposits: On the Native Copper of Lake Superior. Transactions of the Royal Geological Society of Cornwall 8(1): 385-489.
(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.
The Copper Country Rock & Mineral Club (2001) Red Gold and Tarnished Silver, 2nd edition. Self-Published. 44 pages.
Kaminski-Hamka, T. (2011) The Copper Mines of Ontonagon County, Michigan. Copperlady Press. 154 pages.
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