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Agardite-(Ce) Mineral Data

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General Agardite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O)
Help on Composition: Composition: Molecular Weight = 1,070.95 gm
   Calcium      0.86 %  Ca    1.20 % CaO
   Europium     0.28 %  Eu    0.33 % Eu2O3
   Lanthanum    1.95 %  La    2.28 % La2O3
   Cerium       4.32 %  Ce    5.06 % Ce2O3
   Samarium     0.42 %  Sm    0.49 % Sm2O3
   Gadolinium   0.44 %  Gd    0.51 % Gd2O3
   Dysprosium   0.15 %  Dy    0.17 % Dy2O3
   Yttrium      0.75 %  Y     0.95 % Y2O3
   Iron         0.26 %  Fe    0.34 % FeO
   Copper      34.30 %  Cu   42.93 % CuO
   Silicon      0.45 %  Si    0.95 % SiO2
   Arsenic     20.15 %  As   30.90 % As2O5
   Hydrogen     1.24 %  H    11.10 % H2O
   Sulfur       0.15 %  S     0.34 % S2O5
   Neodymium    2.02 %  Nd    2.36 % Nd2O3
   Oxygen      32.27 %  O
              ______        ______ 
              100.00 %       99.91 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ce0.33Ca0.23La0.15Nd0.15Y0.09Sm0.03Gd0.03Eu0.02Dy0.01Cu5.78Fe2+0.05As2.88Si0.17S0.05 O12(OH)6�3.6(H2O)
Help on Environment: Environment: Oxidation products that formed on barite and quartz first noticed in 1970.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Clara mine, near Oberwolfach in the central Black Forest, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Ce-dominant analog of agardite-(La) and agardite-(Y).
Help on Name Pronunciation: Name Pronunciation: Agardite-(Ce) Say AGARDITE-(CE)
Help on Synonym: Synonym: ICSD 31255
  IMA2003-030
  PDF 75-1695
 

Agardite-(Ce) Image

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  Agardite-(Ce)

Comments: Green acicular to fibrous in spherical aggregates of agardite-(Ce) in a vug.
Location: Hayashi, Setoda, Ikuchi Island, Hiroshima Prefecture, Chugoku Region, Honshu Island, Japan. Scale: See Image.
© Rruff Database

Agardite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.4334
Help on Cell Dimensions: Cell Dimensions: a = 13.59, c = 5.89, Z = 2; V = 942.07 Den(Calc)= 3.78
Help on Crystal System: Crystal System: Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 63/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 11.88(1)(100), 2.46(0.9)(212,321), 2.95(0.8)(221,400),3.56(0.8)(211), 4.47(0.8)(111,120), 2.57(0.5), 2.7(0.5),
 

Physical Properties of Agardite-(Ce)

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow green.
Help on Density: Density: 3.72
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: greenish white
 

Optical Properties of Agardite-(Ce)

Help on Dichroism (e): Dichroism (e): yellowish green.
Help on Dichroism (w): Dichroism (w): green.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.125 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.108 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.203,KPDmeas= 0.2063,KC= 0.1833
Ncalc = 1.68 - 1.69
Help on Optical Data: Optical Data: Uniaxial (+), w=1.725, e=1.81, bire=0.0850.
 

Calculated Properties of Agardite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.56 gm/cc
note: Specific Gravity of Agardite-(Ce) =3.78 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0095305374
Boson Index = 0.9904694626
Help on Photoelectric: Photoelectric: PEAgardite-(Ce) = 80.44 barns/electron
U=PEAgardite-(Ce) x relectron= 285.99 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 9,635.52 (Gamma Ray American Petroleum Institute Units)
Concentration of Agardite-(Ce) per GRapi unit = 103.78 (PPM)

Agardite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Agardite-(Ce) - mild
Specimen
Size
Weight/Volume
(Sphere)
*
Calculated
Activity
Bequerols
(Bq)
Calculated
Activity
Curies (Ci)
Estimated
Activity
GR(api)
Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 7.96 cm 215,137 5.81E-06 9,635.52 3.17
100 gm / 3.70 cm 21,514 5.81E-07 963.55 0.32
10 gm / 1.72 cm 2,151 5.81E-08 96.36 0.03
1 gm / 7.96 mm 215 5.81E-09 9.64 0.00
0.1 gm / 3.70 mm 22 5.81E-10 0.96 0.00
0.01 gm / 1.72 mm 2 5.81E-11 0.10 0.00
0.001 gm / 0.80 mm 0 5.81E-12 0.01 0.00

Weight of pure Agardite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.78 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 0.48 % Th) From Sum REE Elements ( 9.58 % REE)
 

Agardite-(Ce) Classification

Help on  Dana Class: Dana Class: 42.05.01.02e (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.05)where (A)2 (XO4) Zq � x(H2O)
  (42.05.01)Mixite group (Arsenate Series)
 
42.05.01.01 Mixite BiCu6(AsO4)3(OH)6•3(H2O) P 63/m 6/m
 
42.05.01.02 Agardite-(Y) (Y,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 63/m 6/m
 
42.05.01.02a Agardite-(La)! (La,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 63/m 6/m
 
42.05.01.02b Agardite-(Nd)! (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m
 
42.05.01.02c Agardite-(Dy)! (Dy,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m
 
42.05.01.02d Agardite-(Ca)! CaCu6(AsO4)3(OH)6•3(H2O) 6/m
 
42.05.01.02e Agardite-(Ce)! (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 63/m 6/m
 
42.05.01.03 Goudeyite (Al,Y)Cu6(AsO4)3(OH)6•3(H2O) Unk Hex
 
42.05.01.04 Zalesiite! (Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]•3(H2O) P 63/m 6/m
 
42.05.01.06 Plumboagardite! (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 63/m 6/m
Help on  Strunz Class: Strunz Class: 08.DL.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DL -With large and medium-sized cations, (OH, etc.):RO4 = 2:1
 
08.DL.15 Agardite-(Dy)! (Dy,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m
 
08.DL.15 Agardite-(Ca)! CaCu6(AsO4)3(OH)6•3(H2O) 6/m
 
08.DL.15 Agardite-(Ce)! (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 63/m 6/m
 
08.DL.15 Agardite-(La)! (La,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 63/m 6/m
 
08.DL.15 Agardite-(Nd)! (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m
 
08.DL.15 Agardite-(Y) (Y,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 63/m 6/m
 
08.DL.15 Goudeyite (Al,Y)Cu6(AsO4)3(OH)6•3(H2O) Unk Hex
 
08.DL.15 Zalesiite! (Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]•3(H2O) P 63/m 6/m
 
08.DL.15 Mixite BiCu6(AsO4)3(OH)6•3(H2O) P 63/m 6/m
 
08.DL.15 Petersite-(Y) (Y,Ce,Nd,Ca)Cu6(PO4)3(OH)6•3(H2O) P 63/m 6/m
 
08.DL.15 Calciopetersite! CaCu6[(PO4)2(PO3OH)(OH)6]•3(H2O) P 63/m 6/m
 
08.DL.15 Plumboagardite! (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 63/m 6/m
 

Other Agardite-(Ce) Information

Help on References: References: NAME( AmMin 89:1574) PHYS. PROP.(AmMin 89:1574) OPTIC PROP.(AmMin 89:1574)
Help on See Also: See Also: Links to other databases for Agardite-(Ce) :
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 - 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 Agardite-(Ce) Specimen Label here :

Agardite-(Ce)

(Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O)
Dana No: 42.05.01.02e Strunz No: 08.DL.15
Locality:

 

Notes:

 

 
   
 


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