Conichalcite Mineral Data + Say CONICHALCITE


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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 IMA Status: IMA Status: Valid Species (Pre-IMA) 1849
Help on Locality: Locality: Link to MinDat.org Location Data.
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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Conichalcite   Cornubite

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

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 - DisphenoidalH-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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Qurashi M M , Barnes W H , The Canadian Mineralogist , 7 (1963) p.561-577, The structures of the minerals of the descloizite and adelite groups:, IV - desclozite and conichalcite (part 2) The structure of conichalcite

 

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 Diaphaniety: Diaphaniety: 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
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:

relectron=4.12 gm/cc
note: rConichalcite =4.35 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00035
Boson Index = 0.99965
Help on Photoelectric: Photoelectric:

PEConichalcite = 32.59 barns/electron
U=PEConichalcite x relectron= 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: 41.5.1.2 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.5)where (A B)2 (XO4) Zq
  (41.5.1)Dana Group
 
41.5.1.1 Adelite CaMg(AsO4)(OH) P 212121 2 2 2
 
41.5.1.2 Conichalcite CaCu(AsO4)(OH) P 212121 2 2 2
 
41.5.1.3 Austinite CaZn(AsO4)(OH) P 212121 2 2 2
 
41.5.1.4 Duftite-beta PbCu(AsO4)(OH) P 212121 2 2 2
 
41.5.1.5 Gabrielsonite PbFe(AsO4)(OH) P 21m mm2
 
41.5.1.6 Tangeite CaCu(VO4)(OH) P 212121 2 2 2
 
41.5.1.7 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 212121 2 2 2
 
41.5.1.8 Cobaltaustinite CaCo(AsO4)(OH) P 212121 2 2 2
 
41.5.1.9 Arsendescloizite PbZn(AsO4)(OH) P 212121 2 2 2
 
41.5.1.10 Gottlobite! CaMg(VO4,AsO4)(OH) P 212121 2 2 2
Help on Strunz Class: Strunz Class: VII/B.26-50 VII - Phosphates, Arsenates and Vanadates
  VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb
  VII/B.26 - Adelite - Duftite group
 
VII/B.26-10 Adelite CaMg(AsO4)(OH) P 212121 2 2 2
 
VII/B.26-15 Gottlobite! CaMg(VO4,AsO4)(OH) P 212121 2 2 2
 
VII/B.26-20 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 212121 2 2 2
 
VII/B.26-30 Cobaltaustinite CaCo(AsO4)(OH) P 212121 2 2 2
 
VII/B.26-40 Austinite CaZn(AsO4)(OH) P 212121 2 2 2
 
VII/B.26-50 Conichalcite CaCu(AsO4)(OH) P 212121 2 2 2
 
VII/B.26-60 Tangeite CaCu(VO4)(OH) P 212121 2 2 2
 
VII/B.26-70 Gabrielsonite PbFe(AsO4)(OH) P 21m mm2
 
VII/B.26-80 Duftite-alpha PbCu(AsO4)(OH) P 212121 2 2 2
 
VII/B.26-80* Duftite-beta PbCu(AsO4)(OH) P 212121 2 2 2
 

Other Conichalcite Information
Help on References: References: 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 - Crocoite.com Mineral Locations 5 - EUROmin Project 6 - Franklin Minerals(Dunn) 7 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (UofA) 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 -Mineralienatlas (Deutsch) 14 -QUT Mineral Atlas 15 - WWW-MINCRYST 16 - YupRocks 17 -École des Mines de Paris

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Conichalcite

CaCu(AsO4)(OH)
Dana No: 41.5.1.2 Strunz No: VII/B.26-50
Locality:

 

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