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Agardite-(Nd) Mineral Data

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General Agardite-(Nd) Information

Help on Chemical  Formula: Chemical Formula: (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6•3(H2O)
Help on Composition: Composition: Molecular Weight = 1,063.17 gm
   Calcium     0.38 %  Ca    0.53 % CaO
   Lanthanum   1.31 %  La    1.53 % La2O3
   Yttrium     0.84 %  Y     1.06 % Y2O3
   Copper     34.07 %  Cu   42.65 % CuO
   Arsenic    21.14 %  As   32.43 % As2O5
   Hydrogen    1.36 %  H    12.12 % H2O
   Lead        5.85 %  Pb    6.30 % PbO
   Neodymium   2.71 %  Nd    3.16 % Nd2O3
   Oxygen     32.35 %  O
             ______        ______ 
             100.00 %       99.77 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb0.3Nd0.2Y0.1La0.1Ca0.1Cu5.7(AsO4)3(OH)4.7�4.8(H2O)
Help on IMA Status: IMA Status: Not Approved IMA (Dana # Added)
Help on Locality: Locality: Wittichen, Black Forest, Baden-W�rttemberg, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition and for Jules Agard, Geologist, Bureau de Recherches Geologiques et Minieres, Orleans, France.
Help on Name Pronunciation: Name Pronunciation: Agardite-(Nd) Say AGARDITE-(ND)
 

Agardite-(Nd) Image

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  Agardite-(Nd)

Comments: Bluish-green agardite-(Nd) crystals and green conichalcite botroids.
Location: Big Three Mine, Esmeralda County, Nevada, USA. Scale: Specimen Length 4 cm.
© Adam Larson

Agardite-(Nd) Crystallography

Help on Crystal System: Crystal System: Hexagonal - Dipyramidal H-M Symbol (6/m)
 

Physical Properties of Agardite-(Nd)

Help on Color: Color: Grass green, Sky blue.
Help on Density: Density: 3.72
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: greenish white
 

Optical Properties of Agardite-(Nd)

Help on Optical Data: Optical Data: NCalc= 1.68 - from Gladstone-Dale relationship (KC = 0.1841) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Agardite-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Agardite-(Nd) =3.72 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEAgardite-(Nd) = 147.80 barns/electron
U=PEAgardite-(Nd) x relectron= 515.92 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,023.43 (Gamma Ray American Petroleum Institute Units)
Concentration of Agardite-(Nd) per GRapi unit = 248.54 (PPM)

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

Estimated Radioactivity from Agardite-(Nd) - 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 / 8.01 cm 90,046 2.43E-06 4,023.43 1.32
100 gm / 3.72 cm 9,005 2.43E-07 402.34 0.13
10 gm / 1.73 cm 900 2.43E-08 40.23 0.01
1 gm / 8.01 mm 90 2.43E-09 4.02 0.00
0.1 gm / 3.72 mm 9 2.43E-10 0.40 0.00
0.01 gm / 1.73 mm 1 2.43E-11 0.04 0.00
0.001 gm / 0.80 mm 0 2.43E-12 0.00 0.00

Weight of pure Agardite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.72 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 ( 0.20 % Th) From Sum REE Elements ( 4.02 % REE)
 

Agardite-(Nd) Classification

Help on  Dana Class: Dana Class: 42.05.01.02b (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-(Nd) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(AmMin, Vol 88, p 475)
Help on See Also: See Also: Links to other databases for Agardite-(Nd) :
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-(Nd) Specimen Label here :

Agardite-(Nd)

(Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6•3(H2O)
Dana No: 42.05.01.02b Strunz No: 08.DL.15
Locality:

 

Notes:

 

 
   
 


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