Paramelaconite Mineral Data

General Paramelaconite Information

Chemical Formula:

Cu+2Cu++2O3

Composition:

Molecular Weight = 79.55 gm

Copper 79.89 % Cu 100.00 % CuO

Oxygen 20.11 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CuO

Environment:

Secondary mineral in hydrothermal copper deposits.

IMA Status:

Valid Species (Pre-IMA) 1891

Locality:

Copper Queen mine, Bisbee, Arizona, USA. Link to MinDat.org Location Data.

Name Origin:

Named from the Greek for near and melaconite, which in turn was named for black and dust, now a synonym for tenorite.

Name Pronunciation:

Paramelaconite + Pronunciation

Synonym:

ICSD 100566

PDF 3-879

Paramelaconite Image

Images:

Paramelaconite

Comments: black paramelaconite masses with blue chrysocolla.
Location: Algoma Mine, Otonagon County, Michigan, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Paramelaconite Crystallography

Axial Ratios:

a:c = 1:1.70155

Cell Dimensions:

a = 5.837, c = 9.932, Z = 16; V = 338.39 Den(Calc)= 6.25

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4₁/amd

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.174(1), 2.918(0.38), 1.7302(0.21),

Forms:

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Forms: ( 0 1 1) ( 1 0 0) ( 0 0 1)

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Crystal Structure:

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O Keeffe M , Bovin J O , American Mineralogist , 63 (1978) p.180-185, The crystal structure of paramelaconite, Cu4O3

Physical Properties of Paramelaconite

Cleavage:

None

Color:

Black.

Density:

6.106

Diaphaneity:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

4.5 - Between Fluorite and Apatite

Luminescence:

Non-fluorescent.

Luster:

Adamantine

Magnetism:

Nonmagnetic

Streak:

black

Optical Properties of Paramelaconite

Optical Data:

NCalc= 2.06 - from Gladstone-Dale relationship (KC = 0.17) where Ncalc=Dcalc*KC+1
NCalc= 2.04 - from Gladstone-Dale relationship (KC = 0.17) where Ncalc=Dmeas*KC+1

Calculated Properties of Paramelaconite

Electron Density:

Bulk Density (Electron Density)=5.81 gm/cc
note: Specific Gravity of Paramelaconite =6.25 gm/cc.

Fermion Index:

Fermion Index = 0.000096545
Boson Index = 0.999903455

Photoelectric:

PE_{Paramelaconite}= 36.14 barns/electron
U=PE_{Paramelaconite} x rElectron Density= 210.10 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paramelaconite is Not Radioactive

Paramelaconite Classification

Dana Class:

04.06.04.01 (04)Simple Oxides

(04.06)not classified

(04.06.04)Dana Group

04.06.04.01 Paramelaconite Cu2Cu2O3 I 4₁/amd 4/m 2/m 2/m

Strunz Class:

04.AA.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.A - Metal:Oxygen = 2.1 and 1:1

04.AA -Cation:Anion (M:O) = 2:1 (and 1.8:1)

04.AA.15 Paramelaconite Cu2Cu2O3 I 4₁/amd 4/m 2/m 2/m

Other Paramelaconite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Paramelaconite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Ask about Paramelaconite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Paramelaconite Specimen Label here :

Paramelaconite

Cu+2Cu++2O3
Dana No: 04.06.04.01 Strunz No: 04.AA.15
Locality:

Notes: