Agardite-(La) Mineral Data + Say AGARDITE-(LA)


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General Agardite-(La) Information
Help on Chemical Formula: Chemical Formula: (La,Ca)Cu6(AsO4)3(OH)6·3(H2O)
Help on Composition: Composition: Molecular Weight = 1,068.32 gm
   Calcium     0.94 %  Ca    1.31 % CaO
   Lanthanum   9.75 %  La   11.44 % La2O3
   Copper     35.69 %  Cu   44.67 % CuO
   Arsenic    21.04 %  As   32.27 % As2O5
   Hydrogen    1.13 %  H    10.12 % H2O
   Oxygen     31.45 %  O
             ______        ______ 
             100.00 %       99.81 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: La0.75Ca0.25Cu6(AsO4)3(OH)6·3(H2O)
Help on IMA Status: IMA Status: Approved IMA 1985 (Dana # Added)
Help on Locality: Locality: USA, NM, Lincoln Co, Red Cloud mn 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.
 

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Agardite-(La) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.43491
Help on Cell Dimensions: Cell Dimensions: a = 13.605, c = 5.917, Z = 2; V = 948.48 Den(Calc)= 3.74
Help on Crystal System: Crystal System: Hexagonal - DipyramidalH-M Symbol (6/m) Space Group: P 63/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 11.7(1)(100), 2.45(0.4)(122), 3.56(0.27)(121),4.45(0.17)(120), 2.94(0.15)(400),
 

Physical Properties of Agardite-(La)

Help on Color: Color: Colorless, Yellowish green, Blue.
Help on Density: Density: 3.72
Help on Diaphaniety: Diaphaniety: Transparent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: greenish white
 

Optical Properties of Agardite-(La)

Help on Optical Data: Optical Data: NCalc= 1.68 - from Gladstone-Dale relationship (KC = 0.1823) where Ncalc=Dcalc*KC+1
NCalc= 1.68 - from Gladstone-Dale relationship (KC = 0.1823) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Agardite-(La)

Help on Electron Density: Electron Density:

relectron=3.51 gm/cc
note: rAgardite-(La) =3.74 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00025
Boson Index = 0.99975
Help on Photoelectric: Photoelectric:

PEAgardite-(La) = 75.43 barns/electron
U=PEAgardite-(La) x relectron= 264.47 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 9,751.14 (Gamma Ray American Petroleum Institute Units)

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

Estimated Radioactivity from Agardite-(La) - 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 / 7.99 cm 218,437 5.90E-06 9,751.14 3.21
100 gm / 3.71 cm 21,844 5.90E-07 975.11 0.32
10 gm / 1.72 cm 2,184 5.90E-08 97.51 0.03
1 gm / 7.99 mm 218 5.90E-09 9.75 0.00
0.1 gm / 3.71 mm 22 5.90E-10 0.98 0.00
0.01 gm / 1.72 mm 2 5.90E-11 0.10 0.00
0.001 gm / 0.80 mm 0 5.90E-12 0.01 0.00

Weight of pure Agardite-(La) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.74 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 ( 0.49 % Th) From Sum REE Elements ( 9.75 % REE)
 

Agardite-(La) Classification
Help on Dana Class: Dana Class: 42.5.1.2a (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.5)where (A)2 (XO4) Zq · x(H2O)
  (42.5.1)Mixite group (Arsenate Series)
 
42.5.1.1 Mixite BiCu6(AsO4)3(OH)6·3(H2O) P 63/m 6/m
 
42.5.1.2 Agardite-(Y) (Y,Ca)Cu6(AsO4)3(OH)6·3(H2O) P 63/m 6/m
 
42.5.1.2a Agardite-(La) ! (La,Ca)Cu6(AsO4)3(OH)6·3(H2O) P 63/m 6/m
 
42.5.1.2b Agardite-(Nd)! (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6·3(H2O) 6/m
 
42.5.1.2c Agardite-(Dy)! (Dy,La,Ca)Cu6(AsO4)3(OH)6·3(H2O) 6/m
 
42.5.1.2d Agardite-(Ca)! CaCu6(AsO4)3(OH)6·3(H2O) 6/m
 
42.5.1.2e Agardite-(Ce)! (Ce,Ca)Cu6(AsO4)3(OH)6·3(H2O) P 63/m 6/m
 
42.5.1.3 Goudeyite (Al,Y)Cu6(AsO4)3(OH)6·3(H2O) Unk Hex
 
42.5.1.4 Zalesiite! (Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]·3(H2O) P 63/m 6/m
 
42.5.1.6 IMA2003-031a! (Pb,REE,Ca)Cu6(AsO4)3(OH)6·3(H2O) P 63/m 6/m
Help on Strunz Class: Strunz Class: VII/D.53-50 VII - Phosphates, Arsenates and Vanadates
  VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K
  VII/D.53 - Mixite - Agardite group
 
VII/D.53-10 Petersite-(Y) (Y,Ce,Nd,Ca)Cu6(PO4)3(OH)6·3(H2O) P 63/m 6/m
 
VII/D.53-20 Goudeyite (Al,Y)Cu6(AsO4)3(OH)6·3(H2O) Unk Hex
 
VII/D.53-30 Zalesiite! (Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]·3(H2O) P 63/m 6/m
 
VII/D.53-40 Agardite-(Y) (Y,Ca)Cu6(AsO4)3(OH)6·3(H2O) P 63/m 6/m
 
VII/D.53-50 Agardite-(La) (La,Ca)Cu6(AsO4)3(OH)6·3(H2O) P 63/m 6/m
 
VII/D.53-60 Agardite-(Ce)! (Ce,Ca)Cu6(AsO4)3(OH)6·3(H2O) P 63/m 6/m
 
VII/D.53-70 Agardite-(Nd)! (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6·3(H2O) 6/m
 
VII/D.53-80 Agardite-(Dy)! (Dy,La,Ca)Cu6(AsO4)3(OH)6·3(H2O) 6/m
 
VII/D.53-90 Mixite BiCu6(AsO4)3(OH)6·3(H2O) P 63/m 6/m
 
VII/D.53-95 Juanitaite! (Cu,Ca,Fe)10Bi(AsO4)4(OH)11·2(H2O) P 41/nnm 4/m 2/m 2/m
 
VII/D.53-100 Mrazekite Bi2Cu3(PO4)2O2(OH)2·2(H2O) P 21/n 2/m
 

Other Agardite-(La) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana, MinCryst)
Help on See Also: See Also: Links to other databases for Agardite-(La) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris

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Agardite-(La)

(La,Ca)Cu6(AsO4)3(OH)6·3(H2O)
Dana No: 42.5.1.2a Strunz No: VII/D.53-50
Locality:

 

Notes:

 
 
   
 
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