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⇱ Toltec Mine, Mass City, Ontonagon County, Michigan, USA

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Toltec Mine, Mass City, Ontonagon County, Michigan, USAi
Regional Level Types
Toltec MineMine
Mass CityCensus-designated Place
Ontonagon CountyCounty
MichiganState
USACountry

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Latitude & Longitude (WGS84):
46° 47' 1'' North , 89° 3' 55'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Ontonagon1,324 (2017)21.3km
South Range746 (2017)45.2km
Hancock4,555 (2017)53.0km
Houghton7,970 (2017)53.2km
Mindat Locality ID:
125308
Long-form identifier:
mindat:1:2:125308:8
GUID (UUID V4):
0


The Toltec Mining Company was organized in 1850 with actual mining beginning in 1851 on a feeder vein off the main Toltec Vein which crossed the property. Several masses of copper were removed from the shafts including one weighing 11 tons. In 1855, the Toltec Consolidated Mining Company was organized after the merger of the Toltec and nearby Farm Mining Companies. The merger increased the shaft count to six. The new company spent nearly one million dollars on surface improvements before mining began which included a stamp mill, a dam for water, and other buildings. Once mining began, it was discovered that the mine contained very little copper and was shutdown after 10 years. The money raised from copper could not overcome the cost of the earlier surface improvements. Over its life span, the mine produced 380,000 pounds of copper. Today the rock piles can produce such minerals as copper, epidote, laumontite, and prehnite.

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


6 valid minerals.

Detailed Mineral List:

ⓘ Calcite
Formula: CaCO3
ⓘ 'Chlorite Group'
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'K Feldspar'
ⓘ Native Copper
Formula: Cu
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
ⓘ Pumpellyite-(Mg)
Formula: Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
ⓘ Quartz
Formula: SiO2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘPumpellyite-(Mg)9.BG.20Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
Unclassified
ⓘ'Chlorite Group'-
ⓘ'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ PrehniteCa2Al2Si3O10(OH)2
Hⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ PrehniteCa2Al2Si3O10(OH)2
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ⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
SiSilicon
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Siⓘ QuartzSiO2
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
FeIron
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
CuCopper
Cuⓘ Native CopperCu

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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References

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