Mineralogy Database

Juanitaite Mineral Data

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General Juanitaite Information

Help on Chemical  Formula: Chemical Formula: (Cu,Ca,Fe)10Bi(AsO4)4(OH)11•2(H2O)
Help on Composition: Composition: Molecular Weight = 1,560.71 gm
   Calcium    6.42 %  Ca    8.98 % CaO
   Iron       1.79 %  Fe    2.30 % FeO
   Copper    28.50 %  Cu   35.68 % CuO
   Bismuth   13.39 %  Bi   14.93 % Bi2O3
   Arsenic   19.20 %  As   29.45 % As2O5
   Hydrogen   0.97 %  H     8.66 % H2O
   Oxygen    29.73 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu7Ca2.5Fe2+0.5Bi(AsO4)4(OH)11•2(H2O)
Help on Environment: Environment: Secondary mineral in copper arsenate and sulfate mineral assemblage from primary sulfide ores (tennantite, chalcopyrite, and pyrite). Chemically related to mixite.
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Gold Hill mine, Tooele County, Utah, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name is for Juanita Curtis who found the mineral.
Help on Synonym: Synonym: IMA1999-022
 

Juanitaite Image

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  Juanitaite

Comments: Microplates of juanitaite on matrix. Scanning Electron Microscope Image.
Location: Gold Hill, Utah. Scale: Field of View 125 µm.
© William Wise

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  Juanitaite

Comments: Green juanitaite in quartz matrix, with conichalcite and sulfides.
Location: Gold Hill Mine, Tooele County, Utah, USA. Scale: 5.4 x 4 x 2.6 cm.
© Richard Dale / Dale Minerals

Juanitaite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.93042
Help on Cell Dimensions: Cell Dimensions: a = 9.961, c = 29.19, Z = 4; V = 2,896.28 Den(Calc)= 3.58
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 41/nnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 14.6(1)(002), 6.34(0.7)(112), 3.146(0.6)(310,303),2.535(0.5)(228), 5.07(0.5)(114), 7.04(0.5)(110), 3.494(0.4), 3.518(0.4),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 3 1 0) ( 1 1 0) ( 0 0 1)

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Physical Properties of Juanitaite

Help on Cleavage: Cleavage: {001} Perfect, {110} Perfect, {100} Good
Help on Color: Color: Olive green, Grass green.
Help on Density: Density: 3.61
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Habit: Habit: Square - Occurs as square crystals in shape or outline.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 1 - Talc
Help on Luster: Luster: Resinous
Help on Streak: Streak: yellow
 

Optical Properties of Juanitaite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.123 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.132 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2081,KPDmeas= 0.2064,KC= 0.1838
Ncalc = 1.66
Help on Optical Data: Optical Data: Uniaxial (-), e=1.705, w=1.785, bire=0.0800.
 

Calculated Properties of Juanitaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.37 gm/cc
note: Specific Gravity of Juanitaite =3.61 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0006102547
Boson Index = 0.9993897453
Help on Photoelectric: Photoelectric: PEJuanitaite = 258.60 barns/electron
U=PEJuanitaite x rElectron Density= 870.91 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Juanitaite is Not Radioactive
 

Juanitaite Classification

Help on  Dana Class: Dana Class: 42.05.04.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.05)where (A)2 (XO4) Zq � x(H2O)
  (42.05.04)Dana Group
 
42.05.04.01 Juanitaite! (Cu,Ca,Fe)10Bi(AsO4)4(OH)11•2(H2O) P 41/nnm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.DE.40 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DE -With only medium-sized cations, (OH, etc.):RO4 = 3:1
 
08.DE.40 Juanitaite! (Cu,Ca,Fe)10Bi(AsO4)4(OH)11•2(H2O) P 41/nnm 4/m 2/m 2/m
 

Other Juanitaite Information

Help on References: References: NAME( MinRec, Vol 31, No 4) PHYS. PROP.(MinRec, Vol 31, No 4) OPTIC PROP.(MinRec, Vol 31, No 4)
Help on See Also: See Also: Links to other databases for Juanitaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Juanitaite

(Cu,Ca,Fe)10Bi(AsO4)4(OH)11•2(H2O)
Dana No: 42.05.04.01 Strunz No: 08.DE.40
Locality:

 

Notes:

 

 
   
 


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