Ellestadite-(Cl) Mineral Data (original) (raw)
General Ellestadite-(Cl) Information
Chemical Formula:
Ca5(SiO4,PO4,SO4)3(Cl,OH,F)
Composition:
Molecular Weight = 511.78 gm
Calcium 39.16 % Ca 54.79 % CaO
Silicon 5.49 % Si 11.74 % SiO2
Phosphorus 6.05 % P 13.87 % P2O5
Hydrogen 0.06 % H 0.53 % H2O
Sulfur 6.27 % S 15.64 % SO3
Chlorine 4.16 % Cl 4.16 % Cl
Oxygen 38.45 % O
Fluorine 0.37 % F 0.37 % F
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Ca5(SiO4)(PO4)(SO4)Cl0.6(OH)0.3F0.1
Environment:
In a skarn.
IMA Status:
Approved IMA 1982
Locality:
Takiue Saitama Prefecture, Japan. Link to MinDat.org Location Data.
Name Origin:
Named for the composition and Reuben B. Ellestad (1900-1993), American analytical chemist of Minneapolis, Minnesota, USA.
Synonym:
Chlorellestadite - Renamed Ellestadite-(Cl) by Mineralogical Record v39 (2008), 131
Ellestadite-(Cl) Image
Images:
Ellestadite-(Cl) Crystallography
Axial Ratios:
a:c = 1:0.72523
Cell Dimensions:
a = 9.51, c = 6.897, Z = 2; V = 540.20 Den(Calc)= 3.15
Crystal System:
Hexagonal - DipyramidalH-M Symbol (6/m) Space Group: P 63/m
X Ray Diffraction:
By Intensity(I/Io): 2.75(1), 2.84(0.95), 2.28(0.4),2.8(0.4), 3.45(0.4), 1.85(0.3), 1.96(0.3), 2.65(0.3),
Crystal Structure:
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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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| | Saint-Jean S J , Hansen S , Solid State Sciences , 7 (2005) p.97-102, Nonstoichiometry in chlorellestadite, Locality: synthetic, Sample: Nonstoichiometric | | ------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Ellestadite-(Cl)
Color:
Colorless, Light pink, Pale rose, Orange.
Density:
3.07
Diaphaneity:
Transparent to Translucent
Habit:
Aggregates - Made of numerous individual crystals or clusters.
Habit:
Compact - Occurs as a compact mass.
Hardness:
4.5 - Between Fluorite and Apatite
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Ellestadite-(Cl)
Gladstone-Dale:
CI meas= -0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2068,KPDmeas= 0.2122,KC= 0.2076
Ncalc = 1.64 - 1.65
Optical Data:
Uniaxial (-), e=1.649-1.65, w=1.652-1.655, bire=0.0030-0.0050.
Calculated Properties of Ellestadite-(Cl)
Electron Density:
Bulk Density (Electron Density)=3.14 gm/cc
note: Specific Gravity of Ellestadite-(Cl) =3.15 gm/cc.
Fermion Index:
Fermion Index = 0.0037459723
Boson Index = 0.9962540277
Photoelectric:
PEEllestadite-(Cl) = 5.96 barns/electron
U=PEEllestadite-(Cl) x rElectron Density= 18.68 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ellestadite-(Cl) is Not Radioactive
Ellestadite-(Cl) Classification
Dana Class:
52.04.09.05 (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
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-(Cl) Information
References:
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
See Also:
Links to other databases for Ellestadite-(Cl) :
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-(Cl) Specimen Label here :
Ellestadite-(Cl)
Ca5(SiO4,PO4,SO4)3(Cl,OH,F)
Dana No: 52.04.09.05 Strunz No: 09.AH.25
Locality:
Notes: