Arsenoflorencite-(La)  Mineral Data

Arsenoflorencite-(La) Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About

Advertisment
McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs
Adamsminerals.com- Online mineral store front for mineral collectors
Your premier supplier of quality mineral specimens from Southern Africa and the world at large
Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

General Arsenoflorencite-(La) Information

Help on Chemical  Formula: Chemical Formula: (La,Sr)Al3(AsO4,SO4,PO4)2(OH)6
Help on Composition: Composition: Molecular Weight = 564.57 gm
   Strontium         3.10 %  Sr    3.67 % SrO
   Lanthanum        12.30 %  La   14.43 % La2O3
   Cerium            2.48 %  Ce    2.91 % Ce2O3
   La,Ce,Pr,Nd,Sm,   5.10 %  RE    5.95 % REE2O3
   Aluminum         14.34 %  Al   27.09 % Al2O3
   Arsenic          18.58 %  As   28.50 % As2O5
   Phosphorus        1.65 %  P     3.77 % P2O5
   Hydrogen          1.07 %  H     9.57 % H2O
   Sulfur            1.70 %  S     4.25 % SO3
   Oxygen           39.67 %  O
                   ______        ______ 
                   100.00 %      100.14 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: La0.5Sr0.2Ce0.1REE0.2Al3(AsO4)1.4(SO4)0.3(PO4)0.3(OH)6
Help on IMA Status: IMA Status: Not Approved IMA 1991
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, Lanthanum.
Help on Name Pronunciation: Name Pronunciation: Arsenoflorencite-(La) + Pronunciation Say ARSENOFLORENCITE-(LA)
 

Arsenoflorencite-(La) Image

Click Here for Larger Arsenoflorencite-(La) Image in a New Browser Window Images:
Click Here for Larger Arsenoflorencite-(La) Image

Arsenoflorencite-(La)

Comments: BSE image of four grains of orange-red Arsenoflorencite-(La) from heavy concentrates of gold-bearing sedimentary rocks.
Location: Grubependity Lake, Maldinskii Region, Prepolar Ural, Russia. Scale: See Image.
© Diederik Visser

Arsenoflorencite-(La) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.38285
Help on Cell Dimensions: Cell Dimensions: a = 7, c = 16.68, Z = 3; V = 707.82 Den(Calc)= 3.97
Help on Crystal System: Crystal System: Trigonal - Ditrigonal PyramidalH-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-(La)

Help on Color: Color: White.
Help on Density: Density: 4.1 - 4.2, Average = 4.15
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-(La)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.044 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.001 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1877,KPDmeas= 0.1795,KC= 0.1878
Ncalc = 1.75 - 1.79
Help on Optical Data: Optical Data: Uniaxial (+), w=1.74, e=1.75, bire=0.0100.
 

Calculated Properties of Arsenoflorencite-(La)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.75 gm/cc
note: Specific Gravity of Arsenoflorencite-(La) =3.97 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEArsenoflorencite-(La) = 115.60 barns/electron
U=PEArsenoflorencite-(La) x relectron= 433.41 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 20,050.17 (Gamma Ray American Petroleum Institute Units)
Concentration of Arsenoflorencite-(La) per GRapi unit = 49.87 (PPM)

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

Estimated Radioactivity from Arsenoflorencite-(La) - weak
Specimen
Size
Weight/Volume
(Sphere)
*
Calculated
Activity
Becquerels
(Bq)
Calculated
Activity
Curies (Ci)
Estimated
Activity
GR(api)
Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 7.84 cm 445,829 1.20E-05 20,050.17 6.59
100 gm / 3.64 cm 44,583 1.20E-06 2,005.02 0.66
10 gm / 1.69 cm 4,458 1.20E-07 200.50 0.07
1 gm / 7.84 mm 446 1.20E-08 20.05 0.01
0.1 gm / 3.64 mm 45 1.20E-09 2.01 0.00
0.01 gm / 1.69 mm 4 1.20E-10 0.20 0.00
0.001 gm / 0.78 mm 0 1.20E-11 0.02 0.00

Weight of pure Arsenoflorencite-(La) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.97 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 ( 0.99 % Th) From Sum REE Elements (19.88 % REE)
 

Arsenoflorencite-(La) Classification

Help on  Dana Class: Dana Class: 41.05.11.03 (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-(La) 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-(La) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Ecole des Mines de Paris
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

Search for Arsenoflorencite-(La) using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Arsenoflorencite-(La) :

A Bijoux Google Search for Arsenoflorencite-(La)
Adam's Minerals Google Search for Arsenoflorencite-(La)
Cape Minerals Google Search for Arsenoflorencite-(La)
Dakota Matrix Minerals Google Search for Arsenoflorencite-(La)
Excalibur Mineral Corp. Google Search for Arsenoflorencite-(La)
Exceptional Minerals Google Search for Arsenoflorencite-(La)
John Betts Fine Minerals Search for Arsenoflorencite-(La)
McDougall Minerals Google Search for Arsenoflorencite-(La)
Mineral News Website Link
Rock and Mineral Shows Google Search for Arsenoflorencite-(La)
Weinrich Minerals, Inc. Google Search for Arsenoflorencite-(La)

Ask about Arsenoflorencite-(La) here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

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

Arsenoflorencite-(La)

(La,Sr)Al3(AsO4,SO4,PO4)2(OH)6
Dana No: 41.05.11.03 Strunz No: 08.BL.13
Locality:

 

Notes: