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Arsenoflorencite-(Nd) Mineral Data

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General Arsenoflorencite-(Nd) Information

Help on Chemical  Formula: Chemical Formula: (Nd,La,Ce,Ba)(Al,Fe+++)3(AsO4,PO4)2(OH)6
Help on Composition: Composition: Molecular Weight = 610.95 gm
   Barium       2.25 %  Ba    2.51 % BaO
   Lanthanum    4.55 %  La    5.33 % La2O3
   Cerium       4.59 %  Ce    5.37 % Ce2O3
   Aluminum     9.94 %  Al   18.78 % Al2O3
   Iron         6.86 %  Fe    9.80 % Fe2O3
   Arsenic     20.85 %  As   31.98 % As2O5
   Phosphorus   1.52 %  P     3.49 % P2O5
   Hydrogen     0.99 %  H     8.85 % H2O
   Neodymium   11.80 %  Nd   13.77 % Nd2O3
   Oxygen      36.66 %  O
              ______        ______ 
              100.00 %       99.87 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Nd0.5La0.2Ce0.2Ba0.1Al2.25Fe3+0.75(AsO4)1.7(PO4)0.3(OH)6
Help on IMA Status: IMA Status: Not Approved IMA
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the arsenic analog of florencite and the dominant rare earth element, Neodymium.
Help on Name Pronunciation: Name Pronunciation: Arsenoflorencite-(Nd) + Pronunciation Say ARSENOFLORENCITE-(ND)
 

Arsenoflorencite-(Nd) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.35419
Help on Cell Dimensions: Cell Dimensions: a = 7.03, c = 16.55, Z = 3; V = 708.34 Den(Calc)= 4.30
Help on Crystal System: Crystal System: Trigonal - Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.95(1), 3.51(0.6), 5.65(0.55),
 

Physical Properties of Arsenoflorencite-(Nd)

Help on Color: Color: White.
Help on Density: Density: 4.05 - 4.15, Average = 4.09
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Arsenoflorencite-(Nd)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.072 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.115 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1733,KPDmeas= 0.1817,KC= 0.1957
Ncalc = 1.79 - 1.84
Help on Optical Data: Optical Data: Uniaxial (+), w=1.74, e=1.75, bire=0.0100.
 

Calculated Properties of Arsenoflorencite-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.84 gm/cc
note: Specific Gravity of Arsenoflorencite-(Nd) =4.10 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEArsenoflorencite-(Nd) = 136.19 barns/electron
U=PEArsenoflorencite-(Nd) x relectron= 522.69 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 20,907.02 (Gamma Ray American Petroleum Institute Units)
Concentration of Arsenoflorencite-(Nd) per GRapi unit = 47.83 (PPM)

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

Estimated Radioactivity from Arsenoflorencite-(Nd) - weak
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 / 7.75 cm 469,025 1.27E-05 20,907.02 6.87
100 gm / 3.60 cm 46,903 1.27E-06 2,090.70 0.69
10 gm / 1.67 cm 4,690 1.27E-07 209.07 0.07
1 gm / 7.75 mm 469 1.27E-08 20.91 0.01
0.1 gm / 3.60 mm 47 1.27E-09 2.09 0.00
0.01 gm / 1.67 mm 5 1.27E-10 0.21 0.00
0.001 gm / 0.78 mm 0 1.27E-11 0.02 0.00

Weight of pure Arsenoflorencite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.10 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 ( 1.05 % Th) From Sum REE Elements (20.94 % REE)
 

Arsenoflorencite-(Nd) Classification

Help on  Dana Class: Dana Class: 41.05.11.02 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.05)where (A B)2 (XO4) Zq
  (41.05.11)Arsenoflorencite Group
 
41.05.11.01 Arsenoflorencite-(Ce) (Ce,La)Al3(AsO4)2(OH)6 R 3m 3 2/m
 
41.05.11.02 Arsenoflorencite-(Nd)* (Nd,La,Ce,Ba)(Al,Fe)3(AsO4,PO4)2(OH)6 R 3m 3m
 
41.05.11.03 Arsenoflorencite-(La)* (La,Sr)Al3(AsO4,SO4,PO4)2(OH)6 R 3m 3m
 
41.05.11.04 Graulichite-(Ce)! CeFe3(AsO4)2(OH)6 R 3m 3 2/m
Help on  Strunz Class: Strunz Class: 08.BL.13 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BL -With medium-sized and large cations, (OH, etc.):RO4 = 3:1
 
08.BL.13 Arsenoflorencite-(Ce) (Ce,La)Al3(AsO4)2(OH)6 R 3m 3 2/m
 
08.BL.13 Eylettersite (Th,Pb)1-xAl3(PO4,SiO4)2(OH)6(?) R 3m 3 2/m
 
08.BL.13 Arsenoflorencite-(La)* (La,Sr)Al3(AsO4,SO4,PO4)2(OH)6 R 3m 3m
 
08.BL.13 Arsenoflorencite-(Nd)* (Nd,La,Ce,Ba)(Al,Fe)3(AsO4,PO4)2(OH)6 R 3m 3m
 
08.BL.13 Florencite-(Ce) CeAl3(PO4)2(OH)6 R 3m 3 2/m
 
08.BL.13 Florencite-(La) (La,Ce)Al3(PO4)2(OH)6 R 3m 3 2/m
 
08.BL.13 Florencite-(Nd) (Nd,Ce)Al3(PO4)2(OH)6 R 3m 3 2/m
 
08.BL.13 Graulichite-(Ce)! CeFe3(AsO4)2(OH)6 R 3m 3 2/m
 
08.BL.13 Waylandite BiAl3(PO4)2(OH)6 R 3m 3 2/m
 
08.BL.13 Zairite Bi(Fe,Al)3(PO4)2(OH)6 R 3m 3 2/m
 

Other Arsenoflorencite-(Nd) Information

Help on References: References: PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,19)
Help on See Also: See Also: Links to other databases for Arsenoflorencite-(Nd) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Arsenoflorencite-(Nd) Specimen Label here :

Arsenoflorencite-(Nd)

(Nd,La,Ce,Ba)(Al,Fe+++)3(AsO4,PO4)2(OH)6
Dana No: 41.05.11.02 Strunz No: 08.BL.13
Locality:

 

Notes:

 

 
   
 


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