Alluaudite  Mineral Data

Alluaudite Mineral Data

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


General Alluaudite Information

Help on Chemical  Formula: Chemical Formula: NaCaFe++(Mn,Fe++,Fe+++,Mg)2(PO4)3
Help on Composition: Composition: Molecular Weight = 482.77 gm
   Sodium       2.86 %  Na    3.85 % Na2O
   Calcium      0.83 %  Ca    1.16 % CaO
   Magnesium    0.50 %  Mg    0.83 % MgO
   Manganese   13.66 %  Mn   17.63 % MnO
   Iron        23.14 %  Fe   33.08 % Fe2O3
   Phosphorus  19.25 %  P    44.10 % P2O5
   Oxygen      39.77 %  O
              ______        ______ 
              100.00 %      100.66 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.6Mn2+0.2Ca0.1Mn2+Fe3+2Mg0.1(PO4)3
Help on Environment: Environment: Sodium metasomatism of triphylite-lithiophilite phosphatic nodules in granite pegmatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1848
Help on Locality: Locality: La Vilate quarry, near Chanteloube, Haute-Vienne, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Francois Alluaud, mining engineer of Limoges, France, who discovered the mineral.
Help on Name Pronunciation: Name Pronunciation: Alluaudite + Pronunciation Say ALLUAUDITE
Help on Synonym: Synonym: Huhnerkobelite
  ICSD 75441
  PDF 42-581
 

Alluaudite Image

Click Here for Larger Alluaudite Image in a New Browser Window Images:
Click Here for Larger Alluaudite Image

Alluaudite

Comments: Nearly pure crystalline dark green brown mass of alluaudite.
Location: Warusenge Pegmatite, Buranga, Rwanda. Scale: Size Not Given.
© John Veevaert

Click Here for Larger Alluaudite Image in a New Browser Window Images:
Click Here for Larger Alluaudite Image

Alluaudite   Heterosite

Comments: Purple crystalline heterosite with yellow coatings of alluaudite.
Location: Palermo Mine, North Groton, Grafton County, New Hampshire, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Alluaudite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9577:1:0.5109
Help on Cell Dimensions: Cell Dimensions: a = 12.004, b = 12.533, c = 6.404, Z = 4; beta = 114.4° V = 877.40 Den(Calc)= 3.65
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.73(1), 6.3(0.8), 3.07(0.65),
Click Here for Large Alluaudite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate

Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above


Moore P B , American Mineralogist , 56 (1971) p.1955-1975, Crystal chemistry of the alluaudite structure type: Contribution to the, paragenesis of pegmatite phosphate giant crystals

View Additional jPOWD Structure files for Alluaudite
[1] [10] [11] [12] [13] [2] [3] [4] [5] [6] [7] [8] [9]
 

Physical Properties of Alluaudite

Help on Cleavage: Cleavage: {010} Good, {110} Good
Help on Color: Color: Brownish yellow, Green, Yellow, Black.
Help on Density: Density: 3.45 - 3.58, Average = 3.51
Help on Diaphaneity: Diaphaneity: Subtranslucent to Opaque
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 5-5.5 - Apatite-Knife Blade
Help on Streak: Streak: brownish yellow
 

Optical Properties of Alluaudite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2209,KPDmeas= 0.2294,KC= 0.2311
Ncalc = 1.8 - 1.84
Help on Optical Data: Optical Data: Biaxial (+), a=1.782, b=1.802, g=1.835, bire=0.0530, 2V(Calc)=78, 2V(Meas)=50-90. Dispersion r > v moderate.
Help on Pleochroism (x): Pleochroism (x): pale olive green, straw yellow, or greenish yellow.
Help on Pleochroism (z): Pleochroism (z): pale olive greenish or brownish yellow.
 

Calculated Properties of Alluaudite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.39 gm/cc
note: Specific Gravity of Alluaudite =3.52 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0056104415
Boson Index = 0.9943895585
Help on Photoelectric: Photoelectric: PEAlluaudite = 11.57 barns/electron
U=PEAlluaudite x rElectron Density= 39.22 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Alluaudite is Not Radioactive
 

Alluaudite Classification

Help on  Dana Class: Dana Class: 38.02.03.06 (38)Anhydrous Phosphates, etc
  (38.02)(A+ B++)5 (XO4)3
  (38.02.03)Alluaudite-Wyllieite Group (Alluaudite Subgroup)
 
38.02.03.01 Ferrohagendorfite* (Na,Ca)2Fe(Fe,Fe)2(PO4)3 I 21/a 2/m
 
38.02.03.02 Hagendorfite NaCaMn(Fe,Fe,Mg)2(PO4)3 I 21/a 2/m
 
38.02.03.03 Varulite NaCaMn(Mn,Fe,Fe)2(PO4)3 C 2/c 2/m
 
38.02.03.04 Maghagendorfite NaMgMn(Fe,Fe)2(PO4)3 I 21/a 2/m
 
38.02.03.05 Ferroalluaudite NaCaFe(Fe,Mn,Fe,Mg)2(PO4)3 C 2/a 2/m
 
38.02.03.06 Alluaudite NaCaFe(Mn,Fe,Fe,Mg)2(PO4)3 C 2/c 2/m
 
38.02.03.07 Odanielite Na(Zn,Mg)3H2(AsO4)3 C 2/c 2/m
 
38.02.03.08 Johillerite Na(Mg,Zn)3Cu(AsO4)3 I2/c 2/m
 
38.02.03.09 Nickenichite Na0,8Ca0,4(Mg,Fe,Al)3Cu0,4(AsO4)3 C 2/c 2/m
 
38.02.03.10 Yazganite! NaFe2(Mg,Mn)(AsO4)3•H2O C 2/c 2/m
 
38.02.03.11 IMA2008-054! NaCaMn2(PO4)[PO3(OH)]2 C 2/c 2/m
 
38.02.03.12 IMA2008-064! Na16Mn25Al8(PO4)30 Pc m
Help on  Strunz Class: Strunz Class: 08.AC.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AC -With medium-sized and large cations
 
08.AC.10 Alluaudite NaCaFe(Mn,Fe,Fe,Mg)2(PO4)3 C 2/c 2/m
 
08.AC.10 Arseniopleite (Ca,Na)(Na,Pb)Mn(Mn,Mg,Fe)2(AsO4)3 I2/a 2/m
 
08.AC.10 Ferrohagendorfite* (Na,Ca)2Fe(Fe,Fe)2(PO4)3 I 21/a 2/m
 
08.AC.10 Caryinite (Na,Pb)(Ca,Na)(Ca,Mn)(Mn,Mg)2(AsO4)3 I2/c 2/m
 
08.AC.10 Hagendorfite NaCaMn(Fe,Fe,Mg)2(PO4)3 I 21/a 2/m
 
08.AC.10 Johillerite Na(Mg,Zn)3Cu(AsO4)3 I2/c 2/m
 
08.AC.10 Ferroalluaudite NaCaFe(Fe,Mn,Fe,Mg)2(PO4)3 C 2/a 2/m
 
08.AC.10 Odanielite Na(Zn,Mg)3H2(AsO4)3 C 2/c 2/m
 
08.AC.10 Maghagendorfite NaMgMn(Fe,Fe)2(PO4)3 I 21/a 2/m
 
08.AC.10 Nickenichite Na0,8Ca0,4(Mg,Fe,Al)3Cu0,4(AsO4)3 C 2/c 2/m
 
08.AC.10 Varulite NaCaMn(Mn,Fe,Fe)2(PO4)3 C 2/c 2/m
 
08.AC.10 Bradaczekite! NaCu4(AsO4)3 C 2/c 2/m
 
08.AC.10 Yazganite! NaFe2(Mg,Mn)(AsO4)3•H2O C 2/c 2/m
 
08.AC.10 IMA2008-054! NaCaMn2(PO4)[PO3(OH)]2 C 2/c 2/m
 

Other Alluaudite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic4)
Help on See Also: See Also: Links to other databases for Alluaudite :
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 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Scandinavian mineral gallery
16 - WWW-MINCRYST

Search for Alluaudite using:

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

Visit our Advertisers for Alluaudite :

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

Ask about Alluaudite 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 Alluaudite Specimen Label here :

Alluaudite

NaCaFe++(Mn,Fe++,Fe+++,Mg)2(PO4)3
Dana No: 38.02.03.06 Strunz No: 08.AC.10
Locality:

 

Notes: