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Calumetite

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Big Photo

Centennial No. 6 Shaft, Centennial Mine, Centennial, Houghton Co., Michigan, USA
© Brent Thorne

Show Calumetite Photos (8)



Formula:
Cu(OH,Cl)
 
2
 · 2H
 
2
O
System:OrthorhombicHardness:2
Name:Named for the town of Calumet, Michigan, USA, near which it was first discovered.
This page provides mineralogical data about Calumetite.

Classification of Calumetite

IMA status:Approved
Strunz 8th edition ID:3/D.01-70
Nickel-Strunz 10th (pending) edition ID:3.DA.40

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
Dana 8th edition ID:6.2.5.1

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
2 : X(OH)2
Hey's CIM Ref.:8.2.8

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
2 : Halides of Cu
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Type Occurrence of Calumetite

Type Locality:Centennial Mine, Centennial, Houghton Co., Michigan, USA
Year of Discovery:1963

Physical Properties of Calumetite

Hardness (Mohs):2

Crystallography of Calumetite

Crystal System:Orthorhombic
Comment:Neither point group nor space group are determined.
X-Ray Powder Diffraction:
d-spacingIntensity
7.50 (10)
3.76 (5)
3.42 (3)
3.30 (3)
3.02 (6)
2.481 (8)
2.341 (3)
(

Optical Data of Calumetite

Type:Biaxial
RI values: nα = 1.666 nβ = 1.690 nγ = 1.690
2V:Measured: 2°
Maximum Birefringence:δ = 0.024

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v or r < v

Chemical Properties of Calumetite

Formula:
Cu(OH,Cl)
 
2
 · 2H
 
2
O
Essential elements:Cu, H, O
All elements listed in formula:Cl, Cu, H, O

Relationship of Calumetite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.DA.05Melanothallite
Cu
 
2
Cl
 
2
O
3.DA.10aAtacamite
Cu
 
2
(OH)
 
3
Cl
3.DA.10bBotallackite
Cu
 
2
(OH)
 
3
Cl
3.DA.10bClinoatacamite
Cu
 
2
(OH)
 
3
Cl
3.DA.10aHibbingite
Fe
2+
2
(OH)
 
3
Cl
3.DA.10aKempite
Mn
2+
2
(OH)
 
3
Cl
3.DA.10cParatacamite
Cu
 
3
(Cu,Zn)(OH)
 
6
Cl
 
2
3.DA.10bBelloite
Cu(OH)Cl
3.DA.10cHerbertsmithite
Cu
 
3
Zn(OH)
 
6
Cl
 
2
3.DA.10cKapellasite
Cu
 
3
Zn(OH)
 
6
Cl
 
2
3.DA.10cGillardite
Cu
 
3
Ni(OH)
 
6
Cl
 
2
3.DA.10cHaydeeite
Cu
 
3
Mg(OH)
 
6
Cl
 
2
3.DA.10dAnatacamite
Cu
 
2
Cl(OH)
 
3
3.DA.15Claringbullite
Cu
 
4
(OH)
 
7
Cl · nH
 
2
O
3.DA.15Barlowite
Cu
 
4
BrF(OH)
 
6
3.DA.20Simonkolleite
Zn
 
5
Cl
 
2
(OH)
 
8
 · H
 
2
O
3.DA.25Buttgenbachite
Cu
 
19
(NO
 
3
)
 
2
(OH)
 
32
Cl
 
4
 · 2H
 
2
O
3.DA.25Connellite
Cu
 
19
(SO
 
4
)(OH)
 
32
Cl
 
4
 · 3H
 
2
O
3.DA.30Abhurite
Sn
 
21
Cl
 
16
(OH)
 
14
O
 
6
3.DA.35Ponomarevite
K
 
4
Cu
 
4
Cl
 
10
O
3.DA.40Anthonyite
Cu(OH,Cl)
 
2
 · 3H
 
2
O
3.DA.45Khaidarkanite
Na
 
0.34
Cu
 
4
Al
 
3
(OH)
 
14
F
 
3
 · 2H
 
2
O
3.DA.50Bobkingite
Cu
 
5
Cl
 
2
(OH)
 
8
 · 2H
 
2
O
3.DA.55Avdoninite
K
 
2
Cu
 
5
(OH)
 
4
Cl
 
8
 · H
 
2
O
3.DA.60Droninoite
Ni
 
6
Fe
32+
(
OH)
 
16
Cl
 
2
 · 4H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
8.2.1Nantokite
CuCl
8.2.2Tolbachite
CuCl
 
2
8.2.3Eriochalcite
CuCl
 
2
 · 2H
 
2
O
8.2.4Atacamite
Cu
 
2
(OH)
 
3
Cl
8.2.5Paratacamite
Cu
 
3
(Cu,Zn)(OH)
 
6
Cl
 
2
8.2.6Botallackite
Cu
 
2
(OH)
 
3
Cl
8.2.7Melanothallite
Cu
 
2
Cl
 
2
O
8.2.9Anthonyite
Cu(OH,Cl)
 
2
 · 3H
 
2
O
8.2.10Claringbullite
Cu
 
4
(OH)
 
7
Cl · nH
 
2
O
8.2.11Marshite
CuI
8.2.12Mitscherlichite
K
 
2
CuCl
 
4
 · 2H
 
2
O
8.2.13Ponomarevite
K
 
4
Cu
 
4
Cl
 
10
O

Other Names for Calumetite

Other Languages:
German:Calumetit
Spanish:Calumetita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Calumetite

Reference List:

- +
Williams, S. A. (1963): Anthonyite and calumetite, two new minerals from the Michigan copper district. American Mineralogist: 48: 614-619.

Internet Links for Calumetite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Calumetite details from Handbook of Mineralogy (PDF)
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    • Localities for Calumetite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Austria
     
    • Tyrol
      • North Tyrol
        • Inn valley
          • Brixlegg - Schwaz area
            • Brixlegg - Rattenberg
    		Schnorrer, G. & Poeverlein, R. (2008): Schwaz-Brixlegger Fundstellen. 6. Die Minerale des Gratlspitz bei Brixlegg in Tirol. Aufschluss 59, 7-28.
    Germany
     
    • Lower Saxony
      • Harz
        • Goslar
          • Astfeld
    		No reference listed
    • Rhineland-Palatinate
      • Lahn valley
    		Wittern: "Mineralfundorte in Deutschland", 2001
          • Frücht
    		Der Aufschluss Vol.55, March/April 2004
      • Siegerland
        • Niederfischbach
    		Weiss: "Mineralfundstellen, Deutschland West", 1990
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
    		Schnorrer-Köhler, G., Standfuss, K. & Standfuss, L. (1981): Neufunde von Mineralen aus den antiken Bleischlacken Laurions. Der Aufschluss, 32, 165-169.; Gelaude, Piet, van Kalmthout, Piet and Rewitzer, Christian (1996): Laurion: The Minerals in the Ancient Slags
    Italy
     
    • Liguria
      • Genova Province
        • Genova
          • Varenna Valley
    		Rivista Mineralogica Italiana, 2 (Avril/Juin), 175-188.
    USA
     
    • Michigan
      • Houghton Co.
        • Centennial
    		Rocks & Min.:58:109.
    Rocks & Minerals 82:276-297
    Brent Thorne collection
      • Keweenaw Co.
        • Ahmeek
          • Ahmeek mine
    		Mineralogy of Michigan (2004) Heinrich & Robinson
      • Ontonagon Co.
        • White Pine
    		R&M 74:3 p160-176
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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