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Chlorellestadite

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Formula:
Ca5(SiO4)1.5(SO4)1.5Cl
Colour:
Pink, off-white with a bluish-greenish hue
Lustre:
Vitreous
Hardness:
Specific Gravity:
3.091 (Calculated)
Crystal System:
Hexagonal
Name:
For the ellestadite group and being the chlorine end member.




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Classification of ChlorellestaditeHide

Approved
Approval Year:
2017
Approval History:
The name has been used of a mineral with the ideal end-member formula Ca10(SiO4)3(SO4)3Cl2. It was assumed not to exist and therefore to be discredited (Pasero et al., 2010), although a synthetic equivalent has been synthesised.
Approved by IMA in 2017.
9.AH.25

9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
52.4.9.5

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
17.10.20

17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate

Physical Properties of ChlorellestaditeHide

Vitreous
Transparency:
Transparent
Colour:
Pink, off-white with a bluish-greenish hue
Streak:
white
Hardness:
4½ on Mohs scale
Hardness:
VHN100=443 - Vickers
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
parallel to elongation
Fracture:
Irregular/Uneven
Density:
3.091 g/cm3 (Calculated)

Optical Data of ChlorellestaditeHide

Type:
Uniaxial (-)
RI values:
nω = 1.664() nε = 1.659(3)
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
Pleochroism:
Non-pleochroic

Chemical Properties of ChlorellestaditeHide

Formula:
Ca5(SiO4)1.5(SO4)1.5Cl
IMA Formula:
Ca10(SiO4)3(SO4)3Cl2
Common Impurities:
Al,Fe,Mn,Mg,C

Crystallography of ChlorellestaditeHide

Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 9.6002(2) Å, c = 6.8692(2) Å
Ratio:
a:c = 1 : 0.716
Unit Cell V:
548.27 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.435(38)
2.858(100)
2.793(90)
2.771(99)
2.648(21)
2.306(21)
1.967(41)
1.851(23)

Occurrences of ChlorellestaditeHide

Paragenetic Mode(s):

Type Occurrence of ChlorellestaditeHide

General Appearance of Type Material:
inhomogeneous, porous, elongate grains up to 0.2-0.3 mm in length
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum, Leninskiy pr., 18/k2, 115162 Moscow, Russia, catalogue number 4975/1
Geological Setting of Type Material:
Calcium-silicate xenolith in rhyodacite lava
Associated Minerals at Type Locality:

Synonyms of ChlorellestaditeHide

Other Language Names for ChlorellestaditeHide

Relationship of Chlorellestadite to other SpeciesHide

Other Members of this group:
FluorellestaditeCa5(SiO4)1.5(SO4)1.5FHex.
HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)Hex. 6/m : P63/m

Related Minerals - Nickel-Strunz GroupingHide

9.AH.05Iimoriite-(Y)Y2[SiO4][CO3]Tric.
9.AH.10Tundrite-(Ce)Na2Ce2Ti(SiO4)(CO3)2O2Tric. 1 : P1
9.AH.10Tundrite-(Nd)Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2
9.AH.15SpurriteCa5(SiO4)2(CO3)Mon.
9.AH.20TernesiteCa5(SiO4)2(SO4)Orth. mmm (2/m 2/m 2/m) : Pnma
9.AH.25Britholite-(Ce)(Ce,Ca)5(SiO4)3OHHex. 6/m : P63/m
9.AH.25Britholite-(Y)(Y,Ca)5(SiO4)3OHHex. 6/m : P63/m
9.AH.25Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3FHex. 6/m : P63/m
9.AH.25FluorellestaditeCa5(SiO4)1.5(SO4)1.5FHex.
9.AH.25HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
9.AH.25MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)Hex. 6/m : P63/m
9.AH.25Tritomite-(Ce)Ce5(SiO4,BO4)3(OH,O)
9.AH.25Tritomite-(Y)Y5(SiO4,BO4)3(O,OH,F)
9.AH.25Fluorcalciobritholite(Ca,REE)5(SiO4,PO4)3FHex. 6/m : P63/m
9.AH.25Fluorbritholite-(Y)(Y,Ca)5(SiO4)3FHex. 6/m : P63/m

Related Minerals - Dana Grouping (8th Ed.)Hide

52.4.9.1Britholite-(Ce)(Ce,Ca)5(SiO4)3OHHex. 6/m : P63/m
52.4.9.2Britholite-(Y)(Y,Ca)5(SiO4)3OHHex. 6/m : P63/m
52.4.9.3FluorellestaditeCa5(SiO4)1.5(SO4)1.5FHex.
52.4.9.4HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
52.4.9.6MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)Hex. 6/m : P63/m
52.4.9.7Karnasurtite-(Ce)(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O
52.4.9.8Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3FHex. 6/m : P63/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.10.1NoseanNa8(Al6Si6O24)(SO4) · H2OIso. 4 3m : P4 3n
17.10.2PitiglianoiteNa6K2(Al6Si6O24)(SO4) · 2H2OHex.
17.10.3Vishnevite(Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2OHex. 6 : P63
17.10.4Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)Iso. 4 3m : P4 3n
17.10.5Liottite(Na,K)16Ca8(Al6Si6O24)3(SO4)5Cl4Hex.
17.10.6Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)Mon.
17.10.7Tuscanite(K(Ca,Na)6(Si,Al)10O22[SO4,CO3,(OH)2] · H2OMon.
17.10.8MicrosommiteNa4K2Ca2(Al6Si6O24)(SO4)Cl2Hex.
17.10.9Delhayelite(Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3 · 18H2OOrth.
17.10.10HydrodelhayeliteKCa2AlSi7O17(OH)2 · 6H2OOrth.
17.10.11Davyne(Na,K)6Ca2(Al6Si6O24)(Cl2,SO4)2Hex. 6/m : P63/m
17.10.12Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6Trig. 3m : P3 1c
17.10.13Franzinite(Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2OHex.
17.10.14Giuseppettite(Na,K,Ca)7-8(Al6Si6O24)(SO4,Cl)1-2Hex.
17.10.15Sacrofanite(Na61K19Ca32)(Si84Al84O336)(SO4)26Cl2F6•2H2OHex.
17.10.16Chessexite(Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2OOrth.
17.10.17InneliteNa2CaBa4Ti3(Si2O7)2(SO4)2O4Tric. 1 : P1
17.10.18ThaumasiteCa3(SO4)[Si(OH)6](CO3) · 12H2OHex. 6 : P63
17.10.19Ellestadite
17.10.21HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
17.10.22FluorellestaditeCa5(SiO4)1.5(SO4)1.5FHex.
17.10.23MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)Hex. 6/m : P63/m
17.10.24QueititePb4Zn2(SO4)(SiO4)(Si2O7)Mon. 2 : P21
17.10.25RoeblingitePb2Ca6Mn2+(Si3O9)2(SO4)2(OH)2 · 4H2OMon. 2/m : B2/m
17.10.26YoshimuraiteBa2Mn2Ti(Si2O7)(PO4)O(OH)Tric. 1 : P1
17.10.27KegelitePb8Al4(Si8O20)(SO4)2(CO3)4(OH)8Mon.
17.10.28Wenkite(Ba,K)4(Ca,Na)6[(SO4)3|(Si,Al)20O39(OH)2] · 0.5H2OHex.
17.10.29MacquartiteCu2Pb7(CrO4)4(SiO4)2(OH)2Mon.
17.10.30WeliniteMn2+6(W6+,Mg)2(SiO4)2(O,OH)6Trig. 3 : P3

Fluorescence of ChlorellestaditeHide

Other InformationHide

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 ChlorellestaditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1982): 67: 90-96.
Jegou Saint-Jean, Simon; Hansen, Staffan (2005): Nonstoichiometry in chlorellestadite. Solid State Sciences 7, 97-102.
Pasero, M., Kampf, A. R., Ferraris, C., Pekov, I. V., Rakovan, J. and White, T. J. (2010): Nomenclature of the apatite supergroup minerals. European Journal of Mineralogy 22, 163-179.
Środek, D.,Książek,M., Galuskina,I.O., Kusz, J., Dulski, M., Gazeev, V. and Galuskin, E. (2017) Chlorellestadite, IMA 2017-013. CNMNC Newsletter No. 37, June 2017, page 741; Mineralogical Magazine: 81: 737–742.
Środek, D., Galuskina, I. O., Galuskin, E., Dulski, M., Książek, M., Kusz, J., & Gazeev, V. (2018). Chlorellestadite, Ca 5 (SiO 4) 1.5 (SO 4) 1.5 Cl, a new ellestadite-group mineral from the Shadil-Khokh volcano, South Ossetia. Mineralogy and Petrology, 1-10.

Internet Links for ChlorellestaditeHide

Localities for ChlorellestaditeHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Cuba
 
  • Cienfuegos Province
Stanislav M. Alexandrov analytical data
Czech Republic
 
  • South Moravia Region
    • Oslavany
Sejkora J, Houzar S, Srein V (1999) Clorem Bohaty Hydroxyellestadit ze Zastavky u Brna. Acta Musei Morav 84:49–59; Środek, D., Galuskina, I. O., Galuskin, E., Dulski, M., Książek, M., Kusz, J., & Gazeev, V. (2018). Chlorellestadite, Ca 5 (SiO 4) 1.5 (SO 4) 1.5 Cl, a new ellestadite-group mineral from the Shadil-Khokh volcano, South Ossetia. Mineralogy and Petrology, 1-10.
Romania
 
  • Hunedoara Co.
    • Hunedoara
      • Boșorod
Onac, B.P., Breban, R., Kearns, J., and Tamas, T. (2002) Unusual minerals related to phosphate deposits in Cioclovina Cave, Şureanu Mts. (Romania). Theoretical and Applied Karstology: 15: 27-34; American Mineralogist: 90:1203-1208 (2005)
South Ossetia (TL)
 
  • Greater Caucasus Mountain Range
    • Kel’ volcanic area
      • Shadil-Khokh volcano
Środek, D.,Książek,M., Galuskina,I.O., Kusz, J., Dulski, M., Gazeev, V. and Galuskin, E. (2017) Chlorellestadite, IMA 2017-013. CNMNC Newsletter No. 37, June 2017, page 741; Mineralogical Magazine: 81: 737–742. ; Środek, D., Galuskina, I. O., Galuskin, E., Dulski, M., Książek, M., Kusz, J., & Gazeev, V. (2018). Chlorellestadite, Ca 5 (SiO 4) 1.5 (SO 4) 1.5 Cl, a new ellestadite-group mineral from the Shadil-Khokh volcano, South Ossetia. Mineralogy and Petrology, 1-10.
USA
 
  • California
    • Riverside Co.
      • Crestmore
Rouse R, Dunn P (1982) A contribution to the crystal chemistry of ellestadite and the silicate sulfate apatites. Am Mineral 67:90–96; micromounts@yahoogroups.com]; Pasero, M., Kampf, A. R., Ferraris, C., Pekov, I. V., Rakovan, J. and White, T. J. (2010): Nomenclature of the apatite supergroup minerals. European Journal of Mineralogy 22, 163-179.
Mineral and/or Locality  
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