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Conichalcite Mineral Data

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General Conichalcite Information

Help on Chemical Formula: Chemical Formula: CaCu(AsO4)(OH)
Help on Composition: Composition: Molecular Weight = 259.55 gm
   Calcium   15.44 %  Ca   21.61 % CaO
   Copper    24.48 %  Cu   30.65 % CuO
   Arsenic   28.87 %  As   44.28 % As2O5
   Hydrogen   0.39 %  H     3.47 % H2O
   Oxygen    30.82 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaCu(AsO4)(OH)
Help on Environment: Environment: secondary mineral in the oxidized zone of copper deposits, typically an alteration product of enargite. Forms three series; with austinite, with cobaltaustinite, and with tangeite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1849
Help on Locality: Locality: Hinojosa de Cordoba, Andalusia, Spain. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for lime and copper, as both elements are essential to the composition.
Help on Name Pronunciation: Name Pronunciation: Conichalcite + Pronunciation Say CONICHALCITE
Help on Synonym: Synonym: Higginsite
  ICSD 64694
  PDF 37-448
 

Conichalcite Image

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  Conichalcite   Willemite

Comments: Conichalcite with willemite.
Location: Collected from the 30 level of the Tsumeb mine. Tsumeb, Namibia. Scale: 2.1 x 1.5 cm.
© John Veevaert
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  Cornubite   Conichalcite

Comments: Blue green crystalline cornubite alteration of enargite with green conichalcite in white calcite.
Location: Lime Bluff Quarry, Lycoming County, Pennsylvania, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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  Barahonaite-(Fe)   Conichalcite

Comments: Micro yellow, platy barahonaite-(Fe) crystals associated with green "beads" of conichalcite, yellowish, earthy arseniosiderite and micro olivenite crystals.
Location: Dolores prospect near the village of Pastrana, in the Province of Murcia of southeastern Spain. Scale: Specimen Size 6 x 4 x 2 cm.
© Tom Loomis / Dakota Matrix

Conichalcite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.7994:1:0.6297
Help on Cell Dimensions: Cell Dimensions: a = 7.382, b = 9.234, c = 5.815, Z = 4; V = 396.38 Den(Calc)= 4.35
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 212121
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.842(1), 3.118(0.9), 2.594(0.5),
Help on Forms: Forms:

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Forms: ( 8 2 5) ( 0 1 1) ( 0 2 1) ( 1 1 1) ( 2 2 1) ( 0 4 1) ( 2 0 3) ( 1 1 0) ( 2 0 1) ( 0 0 1)

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Physical Properties of Conichalcite

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow green, Emerald green.
Help on Density: Density: 4.1
Help on Diaphaneity: Diaphaneity: Subtranslucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Reniform - "Kidney like" in shape (e.g.. hematite).
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Greasy
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: light green
 

Optical Properties of Conichalcite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.072 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1829,KPDmeas= 0.194,KC= 0.181
Ncalc = 1.74 - 1.79
Help on Optical Data: Optical Data: Biaxial (+/-), a=1.73-1.8, b=1.795-1.831, g=1.771-1.846, bire=0.0410-0.0460
 

Calculated Properties of Conichalcite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.12 gm/cc
note: Specific Gravity of Conichalcite =4.35 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0003569827
Boson Index = 0.9996430173
Help on Photoelectric: Photoelectric: PEConichalcite = 32.59 barns/electron
U=PEConichalcite x rElectron Density= 134.37 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Conichalcite is Not Radioactive
 

Conichalcite Classification
Help on Dana Class: Dana Class: 41.05.01.02 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.05)where (A B)2 (XO4) Zq
  (41.05.01)Adelite Group
 
41.05.01.01 Adelite CaMg(AsO4)(OH) P 212121 2 2 2
 
41.05.01.02 Conichalcite CaCu(AsO4)(OH) P 212121 2 2 2
 
41.05.01.03 Austinite CaZn(AsO4)(OH) P 212121 2 2 2
 
41.05.01.04 Duftite-beta? PbCu(AsO4)(OH) P 212121 2 2 2
 
41.05.01.05 Gabrielsonite PbFe(AsO4)(OH) P 21m mm2
 
41.05.01.06 Tangeite CaCu(VO4)(OH) P 212121 2 2 2
 
41.05.01.07 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 212121 2 2 2
 
41.05.01.08 Cobaltaustinite CaCo(AsO4)(OH) P 212121 2 2 2
 
41.05.01.09 Arsendescloizite PbZn(AsO4)(OH) P 212121 2 2 2
 
41.05.01.10 Gottlobite! CaMg(VO4,AsO4)(OH) P 212121 2 2 2
Help on Strunz Class: Strunz Class: 08.BH.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1
 
08.BH.35 Austinite CaZn(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Adelite CaMg(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Arsendescloizite PbZn(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Duftite-alpha PbCu(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Duftite-beta? PbCu(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Cobaltaustinite CaCo(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Conichalcite CaCu(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Gabrielsonite PbFe(AsO4)(OH) P 21m mm2
 
08.BH.35 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 212121 2 2 2
 
08.BH.35 Tangeite CaCu(VO4)(OH) P 212121 2 2 2
 
08.BH.35 Gottlobite! CaMg(VO4,AsO4)(OH) P 212121 2 2 2
 

Other Conichalcite Information
Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Conichalcite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST
18 - YupRocks

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Conichalcite

CaCu(AsO4)(OH)
Dana No: 41.05.01.02 Strunz No: 08.BH.35
Locality:

 

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