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Delaware, Keweenaw Co., Michigan, USAi
Regional Level Types
Delaware- not defined -
Keweenaw Co.County
MichiganState
USACountry

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Key
00170260014947821687784.jpg
Tailings pile for the Connecticut Mine

Connecticut Mine, Delaware, Keweenaw Co., Michigan, USA
02144890014947821712139.jpg
Tailings pile for the Connecticut Mine

Connecticut Mine, Delaware, Keweenaw Co., Michigan, USA
Latitude & Longitude (WGS84):
47° 25' 15'' North , 88° 5' 44'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Copper Harbor108 (2017)16.5km
Ahmeek146 (2017)26.4km
Copper City187 (2017)26.7km
Laurium1,941 (2017)33.2km
Calumet703 (2017)33.2km


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Strunz Dana Chemical 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

14 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

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

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Alphabetical List Tree Diagram

Detailed Mineral List:

Analcime
Formula: Na(AlSi2O6) · H2O
Calcite
Formula: CaCO3
'Chlorite Group'
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Rocks & Min.:58:111.
Copper
Formula: Cu
Localities: Reported from at least 7 localities in this region.
Cuprite
Formula: Cu2O
Reference: Rocks & Min.:58:111.
Datolite
Formula: CaB(SiO4)(OH)
Localities: Reported from at least 8 localities in this region.
'K Feldspar'
Reference: Yalmer Primeau Collection
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Reference: Yalmer Primeau Collection
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2
Malachite
Formula: Cu2(CO3)(OH)2
Microcline
Formula: K(AlSi3O8)
Reference: Rocks & Min.:58:111.
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Prehnite
Formula: Ca2Al2Si3O10(OH)2
'Pumpellyite'
Reference: Rocks & Min.:58:111.
Pumpellyite-(Mg)
Formula: Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2
Pumpellyite-(Mg) var: Chlorastrolite
Formula: Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Reference: Bornhorst & Rose (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Institute Lake Superior Geology proceedings vol 40 part 2
Silver
Formula: Ag
Reference: Rocks & Min.:58:111.
'Stilbite subgroup'
Reference: Rocks & Min.:58:111.
Thomsonite-Ca
Formula: NaCa2[Al5Si5O20] · 6H2O
Reference: Rocks & Min.:58:111.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Silver1.AA.05Ag
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Analcime9.GB.05Na(AlSi2O6) · H2O
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Datolite9.AJ.20CaB(SiO4)(OH)
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Microcline9.FA.30K(AlSi3O8)
Natrolite9.GA.05Na2Al2Si3O10 · 2H2O
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Pumpellyite-(Mg)9.BG.20Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
var: Chlorastrolite9.BG.20Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Thomsonite-Ca9.GA.10NaCa2[Al5Si5O20] · 6H2O
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Pumpellyite'-
'Stilbite subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Silver1.1.1.2Ag
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 54 - NESOSILICATES Borosilicates and Some Beryllosilicates
Borosilicates and Some Beryllosilicates with B in [4] coordination
Datolite54.2.1a.1CaB(SiO4)(OH)
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Pumpellyite-(Mg)58.2.2.7Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Microcline76.1.1.5K(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Analcime77.1.1.1Na(AlSi2O6) · H2O
Laumontite77.1.1.4CaAl2Si4O12 · 4H2O
Natrolite77.1.5.1Na2Al2Si3O10 · 2H2O
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Pumpellyite'-
Pumpellyite-(Mg)
var: Chlorastrolite
-Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
'Stilbite subgroup'-
Thomsonite-Ca-NaCa2[Al5Si5O20] · 6H2O

List of minerals for each chemical element

HHydrogen
H DatoliteCaB(SiO4)(OH)
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H MalachiteCu2(CO3)(OH)2
H PrehniteCa2Al2Si3O10(OH)2
H Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
H AnalcimeNa(AlSi2O6) · H2O
H Pumpellyite-(Mg) (var: Chlorastrolite)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
H LaumontiteCaAl2Si4O12 · 4H2O
H NatroliteNa2Al2Si3O10 · 2H2O
H Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
BBoron
B DatoliteCaB(SiO4)(OH)
CCarbon
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
OOxygen
O DatoliteCaB(SiO4)(OH)
O CalciteCaCO3
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O CupriteCu2O
O MalachiteCu2(CO3)(OH)2
O MicroclineK(AlSi3O8)
O PrehniteCa2Al2Si3O10(OH)2
O Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
O AnalcimeNa(AlSi2O6) · H2O
O Pumpellyite-(Mg) (var: Chlorastrolite)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
O LaumontiteCaAl2Si4O12 · 4H2O
O NatroliteNa2Al2Si3O10 · 2H2O
O Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
O K Feldspar (var: Adularia)KAlSi3O8
NaSodium
Na Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Na AnalcimeNa(AlSi2O6) · H2O
Na NatroliteNa2Al2Si3O10 · 2H2O
MgMagnesium
Mg Pumpellyite-(Mg) (var: Chlorastrolite)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Mg Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al MicroclineK(AlSi3O8)
Al PrehniteCa2Al2Si3O10(OH)2
Al Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Al AnalcimeNa(AlSi2O6) · H2O
Al Pumpellyite-(Mg) (var: Chlorastrolite)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Al LaumontiteCaAl2Si4O12 · 4H2O
Al NatroliteNa2Al2Si3O10 · 2H2O
Al Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Al K Feldspar (var: Adularia)KAlSi3O8
SiSilicon
Si DatoliteCaB(SiO4)(OH)
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si MicroclineK(AlSi3O8)
Si PrehniteCa2Al2Si3O10(OH)2
Si Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Si AnalcimeNa(AlSi2O6) · H2O
Si Pumpellyite-(Mg) (var: Chlorastrolite)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Si LaumontiteCaAl2Si4O12 · 4H2O
Si NatroliteNa2Al2Si3O10 · 2H2O
Si Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Si K Feldspar (var: Adularia)KAlSi3O8
KPotassium
K MicroclineK(AlSi3O8)
K K Feldspar (var: Adularia)KAlSi3O8
CaCalcium
Ca DatoliteCaB(SiO4)(OH)
Ca CalciteCaCO3
Ca PrehniteCa2Al2Si3O10(OH)2
Ca Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Ca Pumpellyite-(Mg) (var: Chlorastrolite)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Ca LaumontiteCaAl2Si4O12 · 4H2O
Ca Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
CuCopper
Cu CopperCu
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu CupriteCu2O
Cu MalachiteCu2(CO3)(OH)2
AgSilver
Ag SilverAg

Localities in this Region

Other Regions, Features and Areas containg this locality

North America PlateTectonic Plate
USA

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