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Ellestadite-(OH) Mineral Data

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General Ellestadite-(OH) Information

Help on Chemical  Formula: Chemical Formula: Ca5(SiO4,SO4)3(OH,Cl,F)
Help on Composition: Composition: Molecular Weight = 505.35 gm
   Calcium   39.65 %  Ca   55.48 % CaO
   Silicon    8.34 %  Si   17.83 % SiO2
   Hydrogen   0.12 %  H     1.07 % H2O
   Sulfur     9.52 %  S    23.76 % SO3
   Chlorine   2.10 %  Cl    2.10 % Cl
               -   %   Cl   -0.47 % -O=Cl2   
   Oxygen    39.89 %  O
   Fluorine   0.38 %  F     0.38 % F
               -   %   F    -0.16 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5(SiO4)1.5(SO4)1.5(OH)0.6Cl0.3F0.1
Help on Environment: Environment: In a skarn.
Help on IMA Status: IMA Status: Approved IMA 1971
Help on Locality: Locality: Chichibu mine, Saitama Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition and Reuben B. Ellestad (1900-1993), American analytical chemist of Minneapolis, Minnesota, USA.
Help on Synonym: Synonym: Hydroxylellestadite - Renamed Ellestadite-(OH) by Mineralogical Record v39 (2008), 131
 

Ellestadite-(OH) Image

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  Yeelimite   Ellestadite-(OH)

Comments: Ye'elimite and hydroxylellestadite intimately intergrown as a brownish aggregate in massive anhydrite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

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  Ellestadite-(OH)

Comments: Pale violet crystalline massive hydroxylellestadite.
Location: Crestmore Quarry, Riverside County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ellestadite-(OH) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.72921
Help on Cell Dimensions: Cell Dimensions: a = 9.491, c = 6.921, Z = 2; V = 539.91 Den(Calc)= 3.11
Help on Crystal System: Crystal System: Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 63/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.84(1), 2.74(0.6), 1.85(0.5),2.8(0.5), 2.66(0.5), 3.46(0.4), 1.48(0.2), 1.96(0.2),
 

Physical Properties of Ellestadite-(OH)

Help on Color: Color: Light pink, Purple gray, Pink.
Help on Density: Density: 3.02
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: beige
 

Optical Properties of Ellestadite-(OH)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.047 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2096,KPDmeas= 0.2159,KC= 0.2061
Ncalc = 1.62 - 1.64
Help on Optical Data: Optical Data: Uniaxial (-), e=1.65, w=1.654, bire=0.0040.
 

Calculated Properties of Ellestadite-(OH)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Ellestadite-(OH) =3.11 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0053339523
Boson Index = 0.9946660477
Help on Photoelectric: Photoelectric: PEEllestadite-(OH) = 5.89 barns/electron
U=PEEllestadite-(OH) x rElectron Density= 18.30 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ellestadite-(OH) is Not Radioactive
 

Ellestadite-(OH) Classification

Help on  Dana Class: Dana Class: 52.04.09.04 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.04)with cations in [6] and/or > [6] coordination
  (52.04.09)Silicate apatites
 
52.04.09.00 Ellestadite* Ca5(SiO4,PO4,SO4)3(F,OH,Cl) P 63/m 6/m
 
52.04.09.01 Britholite-(Ce) (Ce,Ca,Th,La,Nd)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
52.04.09.02 Britholite-(Y) (Y,Ca)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
52.04.09.03 Ellestadite-(F) Ca5(SiO4,PO4,SO4)3(F,OH,Cl) P 63/m 6/m
 
52.04.09.04 Ellestadite-(OH) Ca5(SiO4,SO4)3(OH,Cl,F) P 63/m 6/m
 
52.04.09.05 Ellestadite-(Cl) Ca5(SiO4,PO4,SO4)3(Cl,OH,F) P 63/m 6/m
 
52.04.09.06 Mattheddleite Pb20(SiO4)7(SO4)4Cl4 P 63/m 6/m
 
52.04.09.07 Karnasurtite-(Ce) (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si,P)2O7(OH)4•3(H2O)(?) Unk. Hex
 
52.04.09.08 Fluorbritholite-(Ce) (Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
52.04.09.09 Fluorcalciobritholite! (Ca,REE)5[(Si,P)O4]3F P 63/m 6/m
Help on  Strunz Class: Strunz Class: 09.AH.25 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AH -Nesosilicates with CO3, SO4, PO4, etc.
 
09.AH.25 Britholite-(Ce) (Ce,Ca,Th,La,Nd)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
09.AH.25 Britholite-(Y) (Y,Ca)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
09.AH.25 Ellestadite-(Cl) Ca5(SiO4,PO4,SO4)3(Cl,OH,F) P 63/m 6/m
 
09.AH.25 Fluorbritholite-(Ce) (Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
09.AH.25 Ellestadite-(F) Ca5(SiO4,PO4,SO4)3(F,OH,Cl) P 63/m 6/m
 
09.AH.25 Ellestadite* Ca5(SiO4,PO4,SO4)3(F,OH,Cl) P 63/m 6/m
 
09.AH.25 Ellestadite-(OH) Ca5(SiO4,SO4)3(OH,Cl,F) P 63/m 6/m
 
09.AH.25 Fluorcalciobritholite! (Ca,REE)5[(Si,P)O4]3F P 63/m 6/m
 

Other Ellestadite-(OH) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Larousse des Mineraux,1981)
Help on See Also: See Also: Links to other databases for Ellestadite-(OH) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Ellestadite-(OH) Specimen Label here :

Ellestadite-(OH)

Ca5(SiO4,SO4)3(OH,Cl,F)
Dana No: 52.04.09.04 Strunz No: 09.AH.25
Locality:

 

Notes:

 

 
   
 


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