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Samfowlerite Mineral Data

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General Samfowlerite Information

Help on Chemical  Formula: Chemical Formula: Ca14Mn++3Zn2(Be,Zn)2Be6(SiO4)6(Si2O7)4(OH,F)6
Help on Composition: Composition: Molecular Weight = 2,271.52 gm
   Calcium    24.70 %  Ca   34.56 % CaO
   Manganese   7.26 %  Mn    9.37 % MnO
   Beryllium   2.02 %  Be    5.62 % BeO
   Zinc        7.48 %  Zn    9.32 % ZnO
   Silicon    17.31 %  Si   37.03 % SiO2
   Hydrogen    0.43 %  H     3.81 % H2O
   Oxygen     39.80 %  O
   Fluorine    1.00 %  F     1.00 % F
                -   %   F    -0.42 % -O=F2    
             ______        ______ 
             100.00 %      100.28 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca14Mn2+3Zn2.6Be5.1Si14O56.5H9.6F1.2
Help on Environment: Environment: Metamorphosed stratiform Zn-Mn deposit in vugs in granular willemite-franklinite-andradite ore.
Help on IMA Status: IMA Status: Approved IMA 1994
Help on Locality: Locality: Franklin, Sussex County, New Jersey, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Samuel Fouler, M.D. (1779-1844), who early encouraged study of the Franklin deposits.
Help on Name Pronunciation: Name Pronunciation: Samfowlerite + Pronunciation Say SAMFOWLERITE
Help on Synonym: Synonym: ICSD 100313
  PDF 26-176

Samfowlerite Image

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Comments: SEM image of typical crystals of samfowlerite. (CanMin, v32:43).
Location: Franklin mine, in Franklin, Sussex County, New Jersey, USA. Scale: Picture Size 0.7 µm.
© Canadian Mineralogist

Samfowlerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.504:1:0.8106
Help on Cell Dimensions: Cell Dimensions: a = 9.068, b = 17.992, c = 14.586, Z = 2; beta = 104.86° V = 2,300.14 Den(Calc)= 3.28
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.863(1), 2.388(0.5), 2.653(0.5),

Physical Properties of Samfowlerite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White.
Help on Density: Density: 3.28
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luminescence: Luminescence: Fluorescent, Short UV=weak red, Long UV=weak red.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Samfowlerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2068,KPDmeas= 0.2068,KC= 0.2097
Ncalc = 1.69
Help on Optical Data: Optical Data: Biaxial (-), a=1.674, b=1.68, g=1.681, bire=0.0070, 2V(Calc)=44, 2V(Meas)=29.

Calculated Properties of Samfowlerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.24 gm/cc
note: Specific Gravity of Samfowlerite =3.28 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PESamfowlerite = 9.20 barns/electron
U=PESamfowlerite x rElectron Density= 29.79 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Samfowlerite is Not Radioactive

Samfowlerite Classification

Help on  Dana Class: Dana Class: (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups
  (58.02)with cations in [6] and higher coordination; single and double groups (n=1,2)
  (58.02.07)Dana Group Samfowlerite Ca14Mn3Zn2(Be,Zn)2Be6(SiO4)6(Si2O7)4(OH,F)6 P 21/c 2/m
Help on  Strunz Class: Strunz Class: 09.BF.10 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BF -Sorosilicates with mixed SiO4 and Si2O7 groups;
09.BF.10 Samfowlerite Ca14Mn3Zn2(Be,Zn)2Be6(SiO4)6(Si2O7)4(OH,F)6 P 21/c 2/m

Other Samfowlerite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.80,p185,1995) OPTIC PROP.(Am.Min.,Vol.80,p185,1995)
Help on See Also: See Also: Links to other databases for Samfowlerite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

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Dana No: Strunz No: 09.BF.10





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