Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA (original) (raw)

ⓘ Analcime

Formula: Na(AlSi2O6) · H2O

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Anthonyite (TL)

Formula: Cu(OH,Cl)2 · 3H2O

Type Locality:

Description: Anthonyite is found in pockets or as encrustations in basalt and occurs as delicate, lavender prisms up to 0.5 mm in length embedded and encrusted by an unidentified waxy green basic copper chloride. Other directly associated minerals are copper, cuprite, paratacamite, and an unidentified blue, isotropic, basic copper chlorite. Many of the crystals are curved one or more times along the c axis; the plane of curvature is {010} and bending apparently occurs readily on the perfect cleavage on {100}

ⓘ Atacamite

Formula: Cu2(OH)3Cl

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Baryte

Formula: BaSO4

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Buttgenbachite

Formula: Cu19(NO3)2(OH)32Cl4 · 2H2O

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Calcite

Formula: CaCO3

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Calumetite (TL)

Formula: CaCu4(OH)8Cl2 · 3.5H2O

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Centennialite (TL)

Formula: CaCu3Cl2(OH)6 · nH2O (n ~ 0.7)

Type Locality:

ⓘ Chalcocite

Formula: Cu2S

ⓘ Chalconatronite

Formula: Na2Cu(CO3)2 · 3H2O

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ 'Chlorite Group'

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Copper

Formula: Cu

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 1 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Cuprite

Formula: Cu2O

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Datolite

Formula: CaB(SiO4)(OH)

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 1 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Epidote

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

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 1 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Hoganite

Formula: Cu(CH3COO)2 · H2O

ⓘ 'K Feldspar'

ⓘ 'K Feldspar var. Adularia'

Formula: KAlSi3O8

ⓘ Kinoite

Formula: Ca2Cu2(H2O)2[Si3O10]

ⓘ Laumontite

Formula: CaAl2Si4O12 · 4H2O

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Malachite

Formula: Cu2(CO3)(OH)2

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Monazite-(Ce)

Formula: Ce(PO4)

ⓘ 'Monazite Group'

Formula: REE(PO4)

ⓘ Paratacamite

Formula: Cu3(Cu,Zn)(OH)6Cl2

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

Description: Found as an alteration of native copper in datolite nodules causing the blue color.

ⓘ Powellite

Formula: Ca(MoO4)

ⓘ Prehnite

Formula: Ca2Al2Si3O10(OH)2

ⓘ Pumpellyite-(Mg)

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

Localities:

No. 3 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Pumpellyite-(Mg) var. Chlorastrolite

Formula: Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O

Localities:

No. 3 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 6 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ 'Pumpellyite Subgroup'

Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A

ⓘ Quartz

Formula: SiO2

Localities:

Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 1 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Saponite ?

Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O

ⓘ Silver

Formula: Ag

Localities:

No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA
No. 1 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA

ⓘ Tremolite

Formula: ◻Ca2Mg5(Si8O22)(OH)2