Ellestadite Group
A group of related mineral species
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About Ellestadite Group
Member of:
Name:
The group has its name after the generic name ellestadite, later divided into three species, hydroxylellestadite, fluorellestadite, and chlorellestadite. The name ellestadite (sensu lato) was first introduced by McConnell (1937) and named in honour of Dr. Ruben B. Ellestad (1900-1993), American analytical chemist of Minneapolis.
A group in the Apatite Supergroup which includes hexagonal and pseudohexagonal sulphato-silicates with the ideal ratio (SiO4)4-: (SO4)2- = 1:1 (Pasero et al., 2010).
Unique Identifiers
Mindat ID:
42673
Long-form identifier:
mindat:1:1:42673:6
IMA Classification of Ellestadite Group
IMA status notes:
IMA Approved Group Name
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0004257 | Hydroxylellestadite | Onac B P, Effenberger H, Ettinger K, Panzaru S P (2006) Hydroxylellestadite from Cioclovina Cave (Romania): Microanalytical, structural, and vibrational spectroscopy data American Mineralogist 91 1927-1931 |  | 2006 | Cioclovina Cave, Sureanu Mountains, Romania | 0 | 293 |
| 0015527 | Chlorellestadite | Saint-Jean S J, Hansen S (2005) Nonstoichiometry in chlorellestadite Solid State Sciences 7 97-102 | 2005 | synthetic | 0 | 293 | |
| 0015526 | Chlorellestadite | Saint-Jean S J, Hansen S (2005) Nonstoichiometry in chlorellestadite Solid State Sciences 7 97-102 | 2005 | synthetic | 0 | 293 | |
| 0015322 | Fluorellestadite | Pajares I, De la Torre A G, Martinez-Ramirez S, Puertas F, Blanco-Varela M T, Aranda M A G (2002) Quantitative analysis of mineralized white Portland clinkers: The structure of fluorellestadite Powder Diffraction 17 281-286 | 2002 | synthetic | 0 | 293 | |
| 0014546 | Mattheddleite | Steele I M, Pluth J J, Livingstone A (2000) Crystal structure of mattheddleite: a Pb, S, Si phase with the apatite structure Mineralogical Magazine 64 915-921 | | 2000 | Leadhills, Scotland | 0 | 293 |
| 0014857 | Hydroxylellestadite | Hughes J M, Drexler J W (1991) Cation substitution in the apatite tetrahedral site: crystal structures of type hydroxylellestadtite and type fermorite Neues Jahrbuch fur Mineralogie, Monatshefte 1991 327-336 | 1991 | Crestmore, California, USA | 0 | 293 |
CIF Raw Data - click here to close
Relationship of Ellestadite Group to other Species
Member of:
Other Members of Apatite Supergroup:
| Apatite Group | A group in the Apatite Supergroup which includes hexagonal and pseudohexagonal phosphates, arsenates and ... | |
| Belovite Group | A group in the Apatite Supergroup which includes hexagonal and trigonal phosphates with the M1 site split ... | |
| Britholite Group | (REE,Ca)5[(Si,P)O4]3X | |
| Hedyphane Group | A group in the Apatite Supergroup which includes hexagonal and pseudohexagonal phosphates, arsenates and ... | |
| 'Unnamed (Sr-Ca Fluor Phosphate)' | Ca3Sr2(PO4)3F | |
| Vanackerite | Pb4Cd(AsO4)3Cl | Trig. 3 : P3 |
Ellestadite Group Members:
| Chlorellestadite | Ca5(SiO4)1.5(SO4)1.5Cl | Hex. 6/m : P63/m |
| Fluorellestadite | Ca5(SiO4)1.5(SO4)1.5F | Hex. 6/m : P63/m |
| Hydroxylellestadite | Ca5(SiO4)1.5(SO4)1.5(OH) | Hex. 6/mmm(6/m2/m2/m) : P63/mcm |
| Mattheddleite | Pb5(SiO4)1.5(SO4)1.5(Cl,OH) | Hex. 6/m : P63/m |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Ellestadite Group
mindat.org URL:
https://www.mindat.org/min-42673.html
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References for Ellestadite Group
Localities for Ellestadite Group
Showing 149 localities.
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Whytes Cleuch, Wanlockhead, Dumfries and Galloway, Scotland, UK