Fluorellestadite
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Formula:
Ca5(SiO4)1.5(SO4)1.5F
System:
Hexagonal
Colour:
Blue to pale bluish, ...
Lustre:
Vitreous, Greasy
Hardness:
4½
Member of:
Name:
In allusion to its composition, being the fluorine-dominant analogue of hydroxylellestadite. Named in honor of Dr. Ruben B. Ellestad (1900-1993), American analytical chemist of Minneapolis, and fluorine in the chemical composition. First described as a new mineral from Kopeisk, South Urals, Russia by Chesnokov et al. 1987).
A mineral in the Ellestadite Group of the Apatite Supergroup. Formerly called ellestadite-(F). It is a relatively rare mineral found in skarns or metamorphosed limestones. It is also known from burned coal dumps.
The fluorine analogue of hydroxylellestadite.
The fluorine analogue of hydroxylellestadite.
Classification of Fluorellestadite
Approved
Approval Year:
1987
8/B.27-10
9.AH.25
9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
52.4.9.3
52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
17.10.22
17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate
17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate
Physical Properties of Fluorellestadite
Vitreous, Greasy
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Blue to pale bluish, light rose-red, yellow
Comment:
At the TL thin needles are colorless
Streak:
White streak with a weak bluish tint
Hardness (Mohs):
4½
Tenacity:
Very brittle
Cleavage:
Imperfect/Fair
On {0001}, imperfect.
On {0001}, imperfect.
Fracture:
Conchoidal
Density:
3.03(1) g/cm3 (Measured) 3.090 g/cm3 (Calculated)
Optical Data of Fluorellestadite
Type:
Uniaxial (-)
RI values:
nω = 1.655 nε = 1.650
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Chemical Properties of Fluorellestadite
Formula:
Ca5(SiO4)1.5(SO4)1.5F
Analytical Data:
Wet-chemical analysis of impure material (from type description)
S03 (20.75) Si02 (15.30) P20S (1.31) C02 (0.66) CaO (55.00) MnO (0.18) MgO (1.38) Al203 (1.84) Fe203 (0.11) Na20 (0.33) K20 (0.1) H20+ (0.30) F (3.60) sum 100.76 wt%.
Common Impurities:
Al,Fe,Mn,Mg,Na,K
Crystallography of Fluorellestadite
Crystal System:
Hexagonal
Cell Parameters:
a = 9.53 Å, c = 6.91 Å
Ratio:
a:c = 1 : 0.725
Unit Cell Volume:
V 543.49 ų (Calculated from Unit Cell)
Morphology:
Needles, as hexagonal prismatic, poorly terminated crystals up to 3 mm long, and
as fine-grained aggregates.
as fine-grained aggregates.
Type Occurrence of Fluorellestadite
Co-type Localities:
General Appearance of Type Material:
Needles, as hexagonal prismatic, poorly terminated crystals up to 3 mm long, and
as fine-grained aggregates.
as fine-grained aggregates.
Place of Conservation of Type Material:
In the Fersman Mineralogical Museum, Moscow, Russia.
Geological Setting of Type Material:
In burned fragments of petrifioed wood in coal dumps
Relationship of Fluorellestadite to other Species
Series:
Forms a series with Hydroxylellestadite (see here)
Member of:
Other Members of Group:
| Chlorellestadite | Ca5(SiO4)1.5(SO4)1.5Cl |
| Hydroxylellestadite | Ca5(SiO4)1.5(SO4)1.5(OH) |
| Mattheddleite | Pb5(SiO4)1.5(SO4)1.5(Cl,OH) |
| 9.AH.05 | Iimoriite-(Y) | Y2[SiO4][CO3] |
| 9.AH.10 | Tundrite-(Ce) | Na2Ce2Ti(SiO4)(CO3)2O2 |
| 9.AH.10 | Tundrite-(Nd) | Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2 |
| 9.AH.15 | Spurrite | Ca5(SiO4)2(CO3) |
| 9.AH.20 | Ternesite | Ca5(SiO4)2(SO4) |
| 9.AH.25 | Britholite-(Ce) | (Ce,Ca)5(SiO4)3OH |
| 9.AH.25 | Britholite-(Y) | (Y,Ca)5(SiO4)3OH |
| 9.AH.25 | Chlorellestadite | Ca5(SiO4)1.5(SO4)1.5Cl |
| 9.AH.25 | Fluorbritholite-(Ce) | (Ce,Ca)5(SiO4)3F |
| 9.AH.25 | Hydroxylellestadite | Ca5(SiO4)1.5(SO4)1.5(OH) |
| 9.AH.25 | Mattheddleite | Pb5(SiO4)1.5(SO4)1.5(Cl,OH) |
| 9.AH.25 | Tritomite-(Ce) | Ce5(SiO4,BO4)3(OH,O) |
| 9.AH.25 | Tritomite-(Y) | Y5(SiO4,BO4)3(O,OH,F) |
| 9.AH.25 | Fluorcalciobritholite | (Ca,REE)5(SiO4,PO4)3F |
| 9.AH.25 | Fluorbritholite-(Y) | (Y,Ca)5(SiO4)3F |
| 17.10.1 | Nosean | Na8(Al6Si6O24)(SO4) · H2O |
| 17.10.2 | Pitiglianoite | Na6K2(Al6Si6O24)(SO4) · 2H2O |
| 17.10.3 | Vishnevite | (Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2O |
| 17.10.4 | Haüyne | (Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl) |
| 17.10.5 | Liottite | (Na,K)16Ca8(Al6Si6O24)3(SO4)5Cl4 |
| 17.10.6 | Latiumite | (Ca,K)4(Si,Al)5O11(SO4,CO3) |
| 17.10.7 | Tuscanite | (K(Ca,Na)6(Si,Al)10O22[SO4,CO3,(OH)2] · H2O |
| 17.10.8 | Microsommite | Na4K2Ca2(Al6Si6O24)(SO4)Cl2 |
| 17.10.9 | Delhayelite | (Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3 · 18H2O |
| 17.10.10 | Hydrodelhayelite | KCa2AlSi7O17(OH)2 · 6H2O |
| 17.10.11 | Davyne | (Na,K)6Ca2(Al6Si6O24)(Cl2,SO4)2 |
| 17.10.12 | Afghanite | (Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6 |
| 17.10.13 | Franzinite | (Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2O |
| 17.10.14 | Giuseppettite | (Na,K,Ca)7-8(Al6Si6O24)(SO4,Cl)1-2 |
| 17.10.15 | Sacrofanite | (Na61K19Ca32)(Si84Al84O336)(SO4)26Cl2F6•2H2O |
| 17.10.16 | Chessexite | (Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2O |
| 17.10.17 | Innelite | Na2CaBa4Ti3(Si2O7)2(SO4)2O4 |
| 17.10.18 | Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| 17.10.19 | Ellestadite | |
| 17.10.20 | Chlorellestadite | Ca5(SiO4)1.5(SO4)1.5Cl |
| 17.10.21 | Hydroxylellestadite | Ca5(SiO4)1.5(SO4)1.5(OH) |
| 17.10.23 | Mattheddleite | Pb5(SiO4)1.5(SO4)1.5(Cl,OH) |
| 17.10.24 | Queitite | Pb4Zn2(SO4)(SiO4)(Si2O7) |
| 17.10.25 | Roeblingite | Pb2Ca6Mn2+(Si3O9)2(SO4)2(OH)2 · 4H2O |
| 17.10.26 | Yoshimuraite | Ba2Mn2Ti(Si2O7)(PO4)O(OH) |
| 17.10.27 | Kegelite | Pb8Al4(Si8O20)(SO4)2(CO3)4(OH)8 |
| 17.10.28 | Wenkite | (Ba,K)4(Ca,Na)6[(SO4)3|(Si,Al)20O39(OH)2] · 0.5H2O |
| 17.10.29 | Macquartite | Cu2Pb7(CrO4)4(SiO4)2(OH)2 |
| 17.10.30 | Welinite | Mn62+(W6+,Mg)2(SiO4)2(O,OH)6 |
Other Names for Fluorellestadite
Name in Other Languages:
German:Fluorellestadit
Wilkeit
Wilkeit
Russian:Зллестадит-(F)
Simplified Chinese:硅硫磷灰石
Spanish:Fluorellestadita
Wilkeita
Wilkeita
Other Information
No luminescence in ultraviolet light (360 nm)
Other Information:
Soluble and weakly effervescent in HCl, leaving a silica residuum that retains the original form.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Fluorellestadite
Reference List:
Eakle, A.S. & A.F. Rogers (1914) Wilkeite, a new mineral of the apatite group, and okenite, its alteration product, from southern California, American Journal of Science, 4th. Series: 37: 262-267 (as Wilkeite).
McConnell (1937) American Mineralogist: 22: 977.
Palache, C., Berman, H., & Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 905 (as Wilkeite).
Chesnokov, B. V., Bazhenova, L. F, Bushmakin, A. F. (1987) Fluorellestadite Ca10[(SO4),(SiO4)]6F2—a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 116 (6): 743-746.
Jambor, J. L. Puziewicz, J. (1989) New mineral names. American Mineralogist. 74: 500-505 [abstract]
McConnell (1937) American Mineralogist: 22: 977.
Palache, C., Berman, H., & Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 905 (as Wilkeite).
Chesnokov, B. V., Bazhenova, L. F, Bushmakin, A. F. (1987) Fluorellestadite Ca10[(SO4),(SiO4)]6F2—a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 116 (6): 743-746.
Jambor, J. L. Puziewicz, J. (1989) New mineral names. American Mineralogist. 74: 500-505 [abstract]
Internet Links for Fluorellestadite
mindat.org URL:
https://www.mindat.org/min-1575.html
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Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Fluorellestadite
This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality.
The symbol next to localities in the list
can be used to jump to that position on the map.
symbol to view information about a locality.
The symbol next to localities in the list
can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Canada | |
| GOLD, D.P., EBY, G.N. & VALLEÉ, M. (1986) Carbonatites, diatremes and ultra-alkaline rocks in the Oka area. Fieldtrip guidebook 21, GAC/MAC Meeting, Ottawa, 51p. |
China | |
| Zhengmin Cao and Weijiong Zhu (1993): Acta Scientiarum Naturalium Universitatis Pekinensis 29(4) |
Czech Republic | |
| Hršelová, P., Cempírek, J., Houzar, S., Sejkora, J. (2013): S,F,Cl-rich mineral assemblages from burned spoil heaps in the Rosice-Oslavany coalfield, Czech Republic. Can. Mineral.: 51(1): 171-188 |
France | |
| Eytier J.R. & Ch., Favreau G., Devouard B., Vigier J. (2004), Minéraux de pyrométamorphisme de Lapanouse-de Sévérac (Aveyron), Cahier des Micromonteurs, n°85, pp: 3-58 |
Germany | |
| Hamm, H.M. (1985): Seltene Mineralparagenesen mit Ca2SiO4 und Reinhardbraunsit in Ca-reichen Xenolithen des Bellerberges, Laacher Vulkangebiet, Mitt. Österr. Mineral. Ges. 130, 63-75 |
| in the collection of Christof Schäfer | |
| Galuskin, E.V., Krüger, B., Krüger, H., Blass, G., Widmer, R., Galuskina, I.O. (2016): Wernerkrauseite, CaFe3+2Mn4+O6 - the first non-stoichiometric post-spinel mineral, from Bellerberg volcano, Eifel, Germany. European Journal of Mineralogy, 28, 485-493 | |
| T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64 |
Israel | |
| Vapnik, Y., Sokol, E., Murashko M., Sharygin V. (2006): The enigma of Hatrurim. Mineralogical Almanac, 10, 69-77. |
| Bartura, Y., & Würzburger, U. (1974). The Timna copper deposit. Annales de la Société géologique de Belgique. p277-285 |
| Galuskin, E.V., Galuskina, I.O., Gfeller, F., Krüger, B., Kusz, J., Vapnik, Y., Dulski, M., Dzierżanowski, P. (2016): Silicocarnotite, Ca5[(SiO4)(PO4)](PO4), a new ‘old’ mineral from the Negev Desert, Israel, and the ternesite-silicocarnotite solid solution: indicators of high-temperature alteration of pyrometamorphic rocks of the Hatrurim Complex, Southern Levant. European Journal of Mineralogy: 28: 105-12. | |
Japan | |
| Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.) |
Jordan | |
| Khoury, H.N., Sokol, E.V., Kokh, S.N., Seryotkin, Y.V., Nigmatulina, E.N., Goryainov, S.V., Belogub, E.V., Clark, I.D. (2016): Tululite, Ca14(Fe3+,Al)(Al,Zn,Fe3+,Si,P,Mn,Mg)15O36: a new Ca zincate-aluminate from combustion metamorphic marbles, central Jordan. Mineralogy and Petrology, 110, 125-140 |
| Khoury, H. N., Salameh, E., & Abdul-Jaber, Q. (1985). Characteristics of an unusual highly alkaline water from the Maqarin area, northern Jordan. Journal of Hydrology, 81(1), 79-91. |
Mexico | |
| Miranda-Gasca, M. A., Gomez-Caballero, J. A., & Eastoe, C. J. (1998). Borate deposits of northern Sonora, Mexico; stratigraphy, tectonics, stable isotopes, and fluid inclusions. Economic Geology, 93(4), 510-523. |
Palestine | |
| Galuskina, I.O., Vapnik Ye., Lazic B., Armbruster T., Murashko M. and Galuskin E. Harmunite CaFe2O4: A new mineral from the Jabel Harmun, West Bank, Palestinian Autonomy, Israel. American Mineralogist, 99, 965–975. |
| Seryotkin Y.V., Sokol E.V. & Kokh S.N. 2012: Natural pseudowollastonite: Crystal structure, associated minerals, and geological context. Lithos, vol. 134-135, pp. 75-90; Seryotkin, Yu.V., Sokol, E.V., Kokh, S.N. (2012): Natural pseudowollastonite: Crystal structure, associated minerals, and geological context. Lithos, 134–135, 75-90. | |
Poland | |
| Ciesielczuk, J. (2008): Ellestadite-(F) – a mineral formed in the overburned coal dump (Upper Silesian Coal Basin). Mineralogia Special Papers: 32: 53 |
Portugal | |
| Schnorrer-Köhler (1991), Mineral Occurrences. |
Russia | |
| Cesnokov, B., M. Kotrly, and T. Nisanbajev (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German). |
| Zateeva, S. N., Sokol, E. V., & Sharygin, V. V. (2007). Specificity of pyrometamorphic minerals of the ellestadite group. Geology of Ore Deposits, 49(8), 792-805. | |
| Cesnokov, B., M. Kotrly, and T. Nisanbajev (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German). | |
| Chesnokov, B. V., Bazhenova, L. F, Bushmakin, A. F. (1987) Fluorellestadite Ca10[(SO4),(SiO4)]6F2—a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 116 (6): 743-746; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow |
Slovakia | |
| Koděra P., Uher P., Ozdín D., Kollárová V., Lexa J., 2009: Monticellit, clintonit a hydroxylellestadit-fluorellestadit: vzácne skarnové minerály na Cu-Au porfýrovo-skarnovom ložisku Vysoká – Zlatno (štiavnický stratovulkán). Mineralia Slovaca, 41, 2, 169-178. |
South Ossetia | |
| Galuskina, I.O., Krüger, B., Galuskin, E.V. ,Armbruster, T., Gazeev, V.M., Włodyka, R., Dulski, M. & Dzierżanowski, P. (2015): Fluorchegemite, Ca7(SiO4)3F2, a new mineral from the edgrewitebearing endoskarn zone of an altered xenolith in ignimbrites from Upper Chegem Caldera, Northern Caucasus, Kabardina-balkaria, Russia; Occurrence, crystal structure, and new data on the mineral assemblages. Canadian Mineralogist. 53, 325-344. |
USA | |
| Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 316. |
| Eakle, A.S. & A.F. Rogers (1914), Wilkeite, a new mineral of the apatite group, and okenite, its alteration product, from southern California, Am. Jour. Sci., 4th. Series: 37: 262-267. |
| Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmore, California. American Mineralogist: 26: 368. |
| Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmore, California. American Mineralogist: 26: 367-368. | |
| Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmore, California. American Mineralogist: 26: 352-381. | |
| Cooney, R.L. (1956), The mineralogy of the Jensen and Henshaw quarries near Riverside, California: Unpublished Master’s thesis, University of California at Los Angeles: 24, 39, 41; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 316; Devito, F. and Ordway, A. (1984), The Jensen Quarry, Riverside County, California. Mineralogical Record: 15(5): 273-290. |
| Contrib. Mineral. Petrol. 74, 143-152 (1980) |
Zambia | |
| American Mineralogist: 59: 1139 |
Lapanouse-de-Sévérac slag locality, Aveyron, Occitanie, France