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Danalite Mineral Data

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General Danalite Information

Help on Chemical Formula: Chemical Formula: Fe++4Be3(SiO4)3S
Help on Composition: Composition: Molecular Weight = 558.74 gm
   Beryllium   4.84 %  Be   13.43 % BeO
   Iron       39.98 %  Fe   51.43 % FeO
   Silicon    15.08 %  Si   32.26 % SiO2
   Sulfur      5.74 %  S     5.74 % S2-
                -   %  S    -2.86 % -O=S 
   Oxygen     34.36 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+4Be3(SiO4)3S
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1866
Help on Locality: Locality: Essex Co., Massachusetts, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after James Dwight Dana (1813-1895), American mineralogist and author of the Dana mineral classification.
Help on Name Pronunciation: Name Pronunciation: Danalite Say DANALITE
Help on Synonym: Synonym: ICSD 201639
  PDF 11-491
 

Danalite Image

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  Danalite

Comments: Orange irregular gemmy danalite in matrix.
Location: Iron Mountain, Winston, New Mexico, USA. Scale: See Image.
© Rruff Database

Danalite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 8.17, Z = 2; V = 545.34 Den(Calc)= 3.40
Help on Crystal System: Crystal System: Isometric - Hextetrahedral H-M Symbol (4 3m) Space Group: P 43n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.35(1), 1.932(0.7), 2.193(0.5),
 

Physical Properties of Danalite

Help on Cleavage: Cleavage: {111} Indistinct
Help on Color: Color: Brown, Brownish black, Grayish yellow, Pink, Reddish brown.
Help on Density: Density: 3.43
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: gray white
 

Optical Properties of Danalite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.133 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.143 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2241,KPDmeas= 0.2222,KC= 0.196
Ncalc = 1.67
Help on Optical Data: Optical Data: Isotropic, n=1.753-1.771.
 

Calculated Properties of Danalite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.31 gm/cc
note: Specific Gravity of Danalite =3.43 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEDanalite = 12.95 barns/electron
U=PEDanalite x rElectron Density= 42.94 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Danalite is Not Radioactive
 

Danalite Classification
Help on Dana Class: Dana Class: 76.02.04.02 (76)Tectosilicate Al-Si Framework
  (76.02)Feldspathoids and related species
  (76.02.04)Helvite group
 
76.02.04.01 Helvite Mn4Be3(SiO4)3S P 43n 4 3m
 
76.02.04.02 Danalite Fe4Be3(SiO4)3S P 43n 4 3m
 
76.02.04.03 Genthelvite Zn4Be3(SiO4)3S P 43n 4 3m
Help on Strunz Class: Strunz Class: 09.FB.10 09 - SILICATES (Germanates)
  09.F - Tektosilicates without Zeolitic H2O
  09.FB -Tektosilicates with additional anions
 
09.FB.10 Bicchulite Ca2Al2SiO6(OH)2 I 43m 4 3m
 
09.FB.10 Danalite Fe4Be3(SiO4)3S P 43n 4 3m
 
09.FB.10 Hauyne (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2 P 43n 4 3m
 
09.FB.10 Genthelvite Zn4Be3(SiO4)3S P 43n 4 3m
 
09.FB.10 Helvite Mn4Be3(SiO4)3S P 43n 4 3m
 
09.FB.10 Lazurite Na3Ca(Al3Si3O12)S P 43n 4 3m
 
09.FB.10 Kamaishilite Ca2Al2SiO6(OH)2 I-lattice Tetra
 
09.FB.10 Nosean Na8Al6Si6O24(SO4) P 43m 4 3m
 
09.FB.10 Sodalite Na8Al6Si6O24Cl2 P 43n 4 3m
 
09.FB.10 Tugtupite Na4AlBeSi4O12Cl I 4 4
 
09.FB.10 Tsaregorodtsevite N(CH3)4AlSi5O12 I 222 2 2 2
 

Other Danalite Information
Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Danalite :
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 - WWW-MINCRYST

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Danalite

Fe++4Be3(SiO4)3S
Dana No: 76.02.04.02 Strunz No: 09.FB.10
Locality:

 

Notes:

 
 
   
 

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