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Paramelaconite

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Formula:
Cu1+2Cu2+2O3
Colour:
Black, black with a slight purple tint
Lustre:
Sub-Adamantine, Greasy, Sub-Metallic
Hardness:
Specific Gravity:
5.9 - 6.04
Crystal System:
Tetragonal
Name:
Named by George Augustus Koenig in 1891 from the Greek παρά (para), near, and melaconite, because it is near "melaconite" (= tenorite) in composition.
This page provides mineralogical data about Paramelaconite.


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Classification of ParamelaconiteHide

Approved, 'Grandfathered' (first described prior to 1959)
4.AA.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
A : Metal: Oxygen = 2:1 and 1:1
A : Cation:Anion (M:O) = 2:1 (and 1.8:1)
4.6.4.1

4 : SIMPLE OXIDES
6 : Miscellaneous
7.3.3

7 : Oxides and Hydroxides
3 : Oxides of Cu

Physical Properties of ParamelaconiteHide

Sub-Adamantine, Greasy, Sub-Metallic
Transparency:
Opaque
Colour:
Black, black with a slight purple tint
Streak:
Brown-black
Hardness:
4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
5.9 - 6.04 g/cm3 (Measured)    6.106 g/cm3 (Calculated)

Optical Data of ParamelaconiteHide

Type:
Anisotropic
Anisotropism:
Strong
Colour in reflected light:
White with pinkish brown tint.
Pleochroism:
Weak

Chemical Properties of ParamelaconiteHide

Formula:
Cu1+2Cu2+2O3

Crystallography of ParamelaconiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I41/amd
Cell Parameters:
a = 5.83 Å, c = 9.88 Å
Ratio:
a:c = 1 : 1.695
Unit Cell V:
335.81 ų (Calculated from Unit Cell)
Morphology:
massive, rarely as stout prismatic [001] and {010} striated [100] crystals.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.17 (100)
2.92 (40)
2.48 (10)
1.89 (20)
1.88 (10)
1.73 (20)
1.59 (10)
1.54 (10)
Comments:
ICDD 33-480

Type Occurrence of ParamelaconiteHide

Geological Setting of Type Material:
Oxidized zone of copper sulfide deposit
Associated Minerals at Type Locality:

Other Language Names for ParamelaconiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Brochantite3 photos of Paramelaconite associated with Brochantite on mindat.org.
Cuprite2 photos of Paramelaconite associated with Cuprite on mindat.org.
Fejerite1 photo of Paramelaconite associated with Fejerite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.AA.05IceH2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.AA.10CupriteCu2OIso. m3m (4/m 3 2/m) : Pn3m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.3.1CupriteCu2OIso. m3m (4/m 3 2/m) : Pn3m
7.3.2TenoriteCuOMon. 2/m : B2/b
7.3.4SpertiniiteCu(OH)2Orth.
7.3.5CredneriteCuMnO2Mon. 2/m : B2/m
7.3.6DelafossiteCuFeO2Trig. 3m (3 2/m)
7.3.7CuprospinelCu2+Fe3+2O4Iso.

Fluorescence of ParamelaconiteHide

Not fluorescent

Other InformationHide

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

References for ParamelaconiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Koenig (1891), Academy of Natural Sciences Philadelphia, Proceedings: 284.
Frondel, C. (1941), American Mineralogist: 26: 657-672.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 510-511.
American Mineralogist (1978): 63: 180-185.

Internet Links for ParamelaconiteHide

Localities for ParamelaconiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • New South Wales
    • Yancowinna Co.
      • Silverton
Alan Melbourne
Austria
 
  • Styria
    • Knittelfeld
      • Flatschach
        • Cu deposit (Schönberg)
Meixner+Paar (1979)
Cyprus
 
  • Nicosia District (Lefkoşa District; Lefkosia District)
    • Skouriotissa
American Mineralogist (1975): 60: 1013-1018.
Germany
 
  • Saxony-Anhalt
    • Mansfeld Basin
Gunnar Färber list
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
No reference listed
        • Plaka
          • Plaka Mines
No reference listed
No reference listed
UK
 
  • England
    • Devon
      • East Devon
        • Budleigh Salterton
Technical Report TR-02-09 (March 2002) Alteration of uraniferous and native copper concretions in the Permian mudrocks of south Devon, United Kingdom - A E Milodowski et al
USA
 
  • Arizona
    • Cochise Co.
      • Mule Mts
        • Warren District
[MinRec 24:421]
            • Queen Hill
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 183; Koenig, G.A. (1891), On paramelaconite and the associated minerals, Proc. Acad. Nat. Sci. Phila: 284-291; O'Keefe, M. & J.O. Bovin (1978), The crystal structure of paramelaconite, Cu4O3, Am.Min.: 63: 180-185; Frondel, C. (1941), Paramelaconite: A tetragonal oxide of copper, Am.Min.: 26: 567-672; Mineralogical Record:12(5):309; Dana 6:1093; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 27.
Dana 6:1093.
  • Michigan
    • Ontonagon Co.
      • Mass City
Rocks & Min.:58:112.; 79:124-5
        • Mass Consolidated Mine
Mineralogy of Michigan (E. W. Heinrich & G. W. Robinson)
Mineral and/or Locality  
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