Wöhlerite Group
A group of related mineral species
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About Wöhlerite Group
Formula:
X8(Si2O7)2W4
X= Na+, Ca2+, Mn2+,Ti4+, Zr4+ and Nb5+
W= F-, O2-
W= F-, O2-
A group formally established by IMA in september 2020 (Proposal 20-D).
It has its name after the first described mineral of the group, wöhlerite (Scheerer 1843). It includes ten minerals (status pr. jan. 2022) with both monoclinic and triclinc structures. They occurs as accessory phases in various geological environments as nepheline syenites, alkali feldspar granite and skarns and calc-silicate marbles from different localities worldwide.
Formerly also known as 'Cuspidine Group.'
See also the related Rosenbuschite Group.
It has its name after the first described mineral of the group, wöhlerite (Scheerer 1843). It includes ten minerals (status pr. jan. 2022) with both monoclinic and triclinc structures. They occurs as accessory phases in various geological environments as nepheline syenites, alkali feldspar granite and skarns and calc-silicate marbles from different localities worldwide.
Formerly also known as 'Cuspidine Group.'
See also the related Rosenbuschite Group.
Unique Identifiers
Mindat ID:
35647
Long-form identifier:
mindat:1:1:35647:3
GUID
(UUID V4):
(UUID V4):
2dc16a72-4cd2-4262-84a4-733784745314
IMA Classification of Wöhlerite Group
IMA status notes:
IMA Approved Group Name
Chemistry of Wöhlerite Group
Mindat Formula:
X8(Si2O7)2W4
X= Na+, Ca2+, Mn2+,Ti4+, Zr4+ and Nb5+
W= F-, O2-
X= Na+, Ca2+, Mn2+,Ti4+, Zr4+ and Nb5+
W= F-, O2-
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) |
|---|---|---|---|---|---|---|---|
| 0013849 | Baghdadite | Plaisier J R, Jansen J, de Graaff R A G, Ijdo D J W (1995) Structure determination of Ca3HfSi2O9 and Ca3ZrSi2O9 from powder diffraction Journal of Solid State Chemistry 115 464-468 | 1995 | synthetic | 0 | 293 | |
| 0017879 | Baghdadite | Biagioni C, Bonaccorsi E, Perchiazzi N, Merlino S (2010) Single crystal refinement of the structure of baghdadite from Fuka (Okayama Prefecture, Japan) Periodico di Mineralogia 79 1-9 | 2010 | Fuka, Okayama Prefecture, Japan | 0 | 293 | |
| 0006380 | Burpalite | Merlino S, Perchiazzi N, Khomyakov A P, Pushcharovsky D Y, Kulikova I M, Kuzmin V I (1990) Burpalite, a new mineral from Burpalinskii massif, North Transbajkal, USSR: its crystal structure and OD character European Journal of Mineralogy 2 177-185 | 1990 | Burpalinskii massif, North Transbajkal, USSR | 0 | 293 | |
| 0002593 | Cuspidine | Piotrowski A, Kahlenberg V, Fischer R X (2000) Na2Ca2(P2O7)F2, the first diphosphate of the cuspidine family American Mineralogist 85 1534-1539 |  | 2000 | 0 | 293 | |
| 0002594 | Cuspidine | Piotrowski A, Kahlenberg V, Fischer R X (1999) Na2Ca2(P2O7)F2, the first diphosphate of the cuspidine family American Mineralogist 85 1534-1539 | | 1999 | 0 | 293 | |
| 0005460 | Cuspidine | Fleet M E, Pan Y (1995) The structure of NaCa2LuSi2O7F2, a synthetic phase of the cuspidine group The Canadian Mineralogist 33 879-884 | | 1995 | 0 | 293 | |
| 0007083 | Cuspidine | Bellezza M, Merlino S, Perchiazzi N (2004) Chemical and structural study of the Zr,Ti-disilicates in the venanzite from Pian di Celle, Umbria, Italy European Journal of Mineralogy 16 957-969 | 2004 | Pian di Celle, Umbria, Italy | 0 | 293 | |
| 0018273 | Cuspidine | Saburi S, Kawahara A, Henmi C, Kusachi I, Kihara K (1977) The refinement of the crystal structure of cuspidine Mineralogical Journal 8 286-298 | 1977 | Fuka, Okayama Prefecture, Japan | 0 | 293 | |
| 0018274 | Cuspidine | Smirnova R F, Rumanova I M, Belov N V (1955) Crystal structure of cuspidine Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 84 159-169 | 1955 | 0 | 293 | ||
| 0019216 | Hiortdahlite | Bellezza M, Merlino S, Perchiazzi N (2012) Distinct domains in "guarinite" from Monte Somma, Italy: Crystal structures and crystal chemistry The Canadian Mineralogist 50 531-548 | 2012 | Monte Somma syenite, Italy | 0 | 293 | |
| 0019218 | Hiortdahlite | Bellezza M, Merlino S, Perchiazzi N (2012) Distinct domains in "guarinite" from Monte Somma, Italy: Crystal structures and crystal chemistry The Canadian Mineralogist 50 531-548 | 2012 | Monte Somma syenite, Italy | 0 | 293 | |
| 0019478 | Hiortdahlite | Biagioni C, Merlino S, Parodi G C, Perchiazzi N (2012) Crystal chemistry of minerals of the wohlerite group from the Los Archipelago, Guinea The Canadian Mineralogist 50 593-609 | 2012 | the nepheline syenites of the Los Archipelago, Guinea | 0 | 293 | |
| 0014615 | Hiortdahlite | Merlino S, Perchiazzi N (1987) The crystal structure of hiortdahlite II Mineralogy and Petrology 37 25-35 | 1987 | Kipawa River, Canada | 0 | 293 | |
| 0017878 | Hiortdahlite | Merlino S, Perchiazzi N (2010) The crystal structure of hiortdahlite II Mineralogy and Petrology 37 25-35 | 2010 | Kipawa river, Canada | 0 | 293 | |
| 0015704 | Hiortdahlite | Merlino S, Perchiazzi N (1985) The crystal structure of hiortdahlite I Tschermaks Mineralogische und Petrographische Mitteilungen 34 297-310 | 1985 | 0 | 293 | ||
| 0014794 | Janhaugite | Annehed H, Falth L, Raade G (1985) The crystal structure of janhaugite, a sorosilicate of the cuspidine family Neues Jahrbuch fur Mineralogie, Monatshefte 1985 7-18 | 1985 | 0 | 293 | ||
| 0015690 | Niocalite | Mellini M (1982) Niocalite revised: Twinning and crystal structure Tschermaks Mineralogische und Petrographische Mitteilungen 30 249-266 | 1982 | Oka, Quebec, Canada | 0 | 293 | |
| 0005649 | Normandite | Perchiazzi N, McDonald A M, Gault R A, Johnsen O, Merlino S (2000) The crystal structure of normandite and its crystal-chemical relationships with lavenite The Canadian Mineralogist 38 641-648 | | 2000 | Amdrup Fjord | 0 | 293 |
| 0005650 | Normandite | Perchiazzi N, McDonald A M, Gault R A, Johnsen O, Merlino S (2000) The crystal structure of normandite and its crystal-chemical relationships with lavenite The Canadian Mineralogist 38 641-648 | | 2000 | Mont Saint-Hilaire, Quebec, Canada | 0 | 293 |
| 0019477 | Normandite | Biagioni C, Merlino S, Parodi G C, Perchiazzi N (2012) Crystal chemistry of minerals of the wohlerite group from the Los Archipelago, Guinea The Canadian Mineralogist 50 593-609 | 2012 | the nepheline syenites of the Los Archipelago, Guinea | 0 | 293 |
CIF Raw Data - click here to close
Synonyms of Wöhlerite Group
Relationship of Wöhlerite Group to other Species
Group Members:
| Baghdadite | Ca6Zr2(Si2O7)2O4 | Mon. 2/m : P21/b |
| Burpalite | Na2CaZr(Si2O7)F2 | Mon. 2/m : P21/b |
| Cuspidine | Ca8(Si2O7)2F4 | Mon. 2/m : P21/b |
| Hiortdahlite | Na2Ca4(Ca0.5Zr0.5)Zr(Si2O7)2OF3 | Tric. 1 : P1 |
| Janhaugite | (Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2 | Mon. 2/m : P21/m |
| Låvenite | Na2Ca2Mn2Zr2(Si2O7)2O2F2 | Mon. 2/m : P21/b |
| Madeiraite | Na2Ca2Fe2Zr2(Si2O7)2O2F2 | Mon. 2/m : P21/b |
| Moxuanxueite | NaCa6Zr(Si2O7)2OF3 | Tric. 1 : P1 |
| Niocalite | (Ca,Nb)4(Si2O7)(O,OH,F)2 | Mon. m |
| Normandite | NaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF | Mon. 2/m : P21/b |
| Pilanesbergite | Na2Ca2Fe2Ti2(Si2O7)2O2F2 | Mon. 2/m : P21/b |
| Wöhlerite | Na2Ca4ZrNb(Si2O7)2O3F | Mon. 2 : P21 |
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 Wöhlerite Group
mindat.org URL:
https://www.mindat.org/min-35647.html
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References for Wöhlerite Group
Reference List:
Scheerer, Th. (1843) Ueber den Wöhlerit, eine neue Mineralspecies. Annalen der Physik und Chemie, 135. 327-336 doi:10.1002/andp.18431350611
Localities for Wöhlerite Group
symbol to view information about a locality.
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.
Laacher See Volcanic Complex, Germany