Ferrowyllieite Mineral Data + Say FERROWYLLIEITE


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General Ferrowyllieite Information

Help on Chemical  Formula: Chemical Formula: (Na,Ca,Mn)(Fe++,Mn)(Fe++,Fe+++,Mg)Al(PO4)3
Help on Composition: Composition: Molecular Weight = 478.55 gm
   Sodium       6.25 %  Na    8.42 % Na2O
   Calcium      1.67 %  Ca    2.34 % CaO
   Magnesium    1.02 %  Mg    1.68 % MgO
   Manganese    3.44 %  Mn    4.45 % MnO
   Aluminum     4.51 %  Al    8.52 % Al2O3
   Iron        23.57 %  Fe   30.03 % FeO /  0.33 % Fe2O3
   Phosphorus  19.42 %  P    44.49 % P2O5
   Oxygen      40.12 %  O
              ______        ______ 
              100.00 %      100.27 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na1.3Mn2+0.3Ca0.2Fe2+2Al0.8Mg0.2Fe3+0.02(PO4)3
Help on Environment: Environment: Primary phosphate in zoned granite pegmatites. Forms a series with wyllieite and with rosemaryite.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Victory mine, 4 km northeast of Custer, Custer County, South Dakota, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Dominant ferrous iron and relationship to wyllieite.
 

Ferrowyllieite Image

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Ferrowyllieite

Comments: Deep greenish black massive ferrowyllieite with brown to white quartz.
Location: Victory Mine, near Custer, Custer County, South Dakota, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrowyllieite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9584:1:0.5131
Help on Cell Dimensions: Cell Dimensions: a = 11.868, b = 12.382, c = 6.354, Z = 4; beta = 114.52° V = 849.51 Den(Calc)= 3.74
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.674(1), 2.693(1), 6.15(0.6),
 

Physical Properties of Ferrowyllieite

Help on Cleavage: Cleavage: [010] Perfect, [101] Distinct
Help on Color: Color: Bluish green, Greenish black, Gray green, Dark blue green.
Help on Density: Density: 3.6
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Selvage - As a reaction rim, surrounding the host mineral.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous - Metallic
Help on Streak: Streak: gray green
 

Optical Properties of Ferrowyllieite

Help on Optical Data: Optical Data: Biaxial (+), a=1.688, b=1.691, g=1.696, bire=0.0080, 2V(Calc)=76, 2V(Meas)=50. Dispersion r < v strong.
Help on Pleochroism (x): Pleochroism (x): smoky bluish gray.
Help on Pleochroism (y): Pleochroism (y): smoky bluish green.
Help on Pleochroism (z): Pleochroism (z): green.
 

Calculated Properties of Ferrowyllieite

Help on Electron Density: Electron Density:

relectron=3.63 gm/cc
note: rFerrowyllieite =3.74 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00622
Boson Index = 0.99378
Help on Photoelectric: Photoelectric:

PEFerrowyllieite = 9.34 barns/electron
U=PEFerrowyllieite x relectron= 33.87 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Ferrowyllieite is Not Radioactive

 

Ferrowyllieite Classification

Help on  Dana Class: Dana Class: 38.2.4.1 (38)Anhydrous Phosphates, etc
  (38.2)(A+ B++)5 (XO4)3
  (38.2.4)Alluaudite-Wyllieite Group (Wyllieite Subgroup)
 
38.2.4.1 Ferrowyllieite (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 P 21/n 2/m
 
38.2.4.2 Wyllieite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 21/n 2/m
 
38.2.4.3 Rosemaryite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 21/n 2/m
 
38.2.4.4 Qingheiite Na2(Mn,Mg,Fe)(Al,Fe)(PO4)3 P 21/n 2/m
 
38.2.4.5 Bobfergusonite Na2Mn5FeAl(PO4)6 P 21/n 2/m
 
38.2.4.6 Bradaczekite! NaCu4(AsO4)3 C 2/c 2/m
 
38.2.4.7 Ferrorosemaryite! []NaFeFeAl(PO4)3 P 21/n 2/m
Help on  Strunz Class: Strunz Class: VII/A.06-30 VII - Phosphates, Arsenates and Vanadates
  VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, cations of medium and big size: Mg, Mn,Fe, Cu, Zn, and Ca, Na
  VII/A.06 - Alluaudite- Hagendorfite group
 
VII/A.06-10 Qingheiite Na2(Mn,Mg,Fe)(Al,Fe)(PO4)3 P 21/n 2/m
 
VII/A.06-20 Bobfergusonite Na2Mn5FeAl(PO4)6 P 21/n 2/m
 
VII/A.06-30 Ferrowyllieite (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 P 21/n 2/m
 
VII/A.06-40 Wyllieite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 21/n 2/m
 
VII/A.06-50 Rosemaryite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 21/n 2/m
 
VII/A.06-60 Ferroalluaudite NaCaFe(Fe,Mn,Fe,Mg)2(PO4)3 C 2/a 2/m
 
VII/A.06-70 Alluaudite NaCaFe(Mn,Fe,Fe,Mg)2(PO4)3 C 2/c 2/m
 
VII/A.06-80 Maghagendorfite NaMgMn(Fe,Fe)2(PO4)3 I 21/a 2/m
 
VII/A.06-85 Ferrohagendorfite* (Na,Ca)2Fe(Fe,Fe)2(PO4)3 I 21/a 2/m
 
VII/A.06-90 Hagendorfite NaCaMn(Fe,Fe,Mg)2(PO4)3 I 21/a 2/m
 
VII/A.06-100 Varulite NaCaMn(Mn,Fe,Fe)2(PO4)3 C 2/c 2/m
 
VII/A.06-110 Arseniopleite (Ca,Na)(Na,Pb)Mn(Mn,Mg,Fe)2(AsO4)3 I2/a 2/m
 
VII/A.06-120 Caryinite (Na,Pb)(Ca,Na)(Ca,Mn)(Mn,Mg)2(AsO4)3 I2/c 2/m
 

Other Ferrowyllieite 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 Ferrowyllieite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Ferrowyllieite

(Na,Ca,Mn)(Fe++,Mn)(Fe++,Fe+++,Mg)Al(PO4)3
Dana No: 38.2.4.1 Strunz No: VII/A.06-30
Locality:

 

Notes:

 

 
   
 
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