Samfowlerite Mineral Data (original) (raw)

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

IMA1991-045

PDF 26-176

Samfowlerite Image

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

Click Here for Larger Samfowlerite Image Samfowlerite 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 - PrismaticH-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),

Click Here for Large Samfowlerite Structure Window Crystal Structure:

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Help on Above

| | Rouse R C , Peacor D R , Dunn P J , Su S-C , Chi P H , Yeates H , The Canadian Mineralogist , 32 (1994) p.43-53, Samfowlerite, a new Ca Mn Zn beryllosilicate mineral, from Franklin, New Jersey: Its characterization and crystal structure, Locality: Franklin, New Jersey, USA | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |

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:

58.02.07.01 (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

58.02.07.01 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
16 - WWW-MINCRYST

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Ask about Samfowlerite here :
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Print or Cut-and-Paste your Samfowlerite Specimen Label here :

Samfowlerite

Ca14Mn++3Zn2(Be,Zn)2Be6(SiO4)6(Si2O7)4(OH,F)6
Dana No: 58.02.07.01 Strunz No: 09.BF.10
Locality:

Notes: