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Fluor-schorl

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Big Photo

Lake Boga granite quarry, Lake Boga, Victoria, Australia
© Stuart Mills 2003

Show Fluor-schorl Photos (3)



Formula:
Na(Fe
2+
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
System:Trigonal
Member of:Tourmaline Group
Name:For the relation to schorl.


The F-analogue of schorl.

Apparently not really uncommon (Kolitsch & Ertl, unpubl. results), confirmed by analytical data in Henry & Dutrow (2011).

First reported, with a full crystal-structure refinement and complete chemical-analytical details, as unnamed F-dominant analogue of schorl from Grasstein, Trentino – South Tyrol, Italy (Ertl et al., 2006).

Classification of Fluor-schorl

IMA status:Approved 2011
Strunz 8th edition ID:8/E.19-
Strunz 9th edition ID:9.CK.05
Nickel-Strunz 10th (pending) edition ID:9.CK.

9 : SILICATES (Germanates)
C : Cyclosilicates
K : [Si6O18]12- 6-membered single rings, with insular complex anions
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Type Occurrence of Fluor-schorl

Co-type Localities:Steinberg, Zschorlau, Schneeberg District, Erzgebirge, Saxony, Germany
Le Cave, Grasstein, Fortezza (Franzensfeste), Sarentine Alps (Sarntal Alps), Bolzano Province (South Tyrol), Trentino-Alto Adige, Italy
Place of Conservation of Type Material:Natural History Museum, Vienna (Austria), registered nos. 8165 (holotype, Zschorlau) and 8166 (holotype, Grasstein)

Crystallography of Fluor-schorl

Crystal System:Trigonal
Class (H-M):3m - Ditrigonal Pyramidal
Space Group:R3m
Space Group Setting:R3m
Cell Parameters:a = 16.005(2) Å, c = 7.176(1) Å
Ratio:a:c = 1 : 0.448
Unit Cell Volume:V 1,591.93 ų (Calculated from Unit Cell)
Z:3
X-Ray Powder Diffraction:
d-spacingIntensity
6.361 (84)
4.225 (39)
3.995 (100)
3.470 (67)
2.959 (51)
2.584 (76)
2.045 (24)
1.454 (26)

Chemical Properties of Fluor-schorl

Formula:
Na(Fe
2+
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Essential elements:Al, B, F, Fe, H, Na, O, Si
All elements listed in formula:Al, B, F, Fe, H, Na, O, Si

Relationship of Fluor-schorl to other Species

Member of:Tourmaline Group
Other Members of Group:

- +
Buergerite
Na(Fe
3+
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
O
 
3
F
Chromdravite
Na(Mg
 
3
)Cr
3+
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Chromo-aluminopovondraite
Na(Cr
 
3
)Mg
 
2
Al
 
4
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Dravite
Na(Mg
 
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Elbaite
Na(Li
 
1.5
Al
 
1.5
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Feruvite
Ca(Fe
2+
 
)
 
3
MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Fluor-dravite
Na(Mg
 
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Fluor-elbaite
Na(Li
 
1.5
Al
 
1.5
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Fluor-feruvite
Ca(Fe
2+
 
)
 
3
MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
Fluor-liddicoatite
Ca(Li
 
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)F
Foitite
(□,Na)(Fe
2+
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
OH
Liddicoatite
Ca(Li
 
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Luinaite-(OH)
Na(Fe
2+
 
)
 
3
Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Magnesiofoitite
(□,Na)(Mg
 
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Olenite
Na(Al
 
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
O
 
3
(OH)
Oxy-dravite
Na(MgAl
 
2
)MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Oxy-rossmanite
☐(LiAl
 
2
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Oxy-schorl
Na(Fe
2+
 
,Al)
 
3
Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(O,OH,F)
Povondraite
Na(Fe
3+
3
)Mg
 
2
Fe
3+
4
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
Rossmanite
☐(LiAl
 
2
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Schorl
Na(Fe
2+
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Tsilaisite
Na(Mn
2+
 
)
 
3
Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Unnamed (Pb-dominant tourmaline)
(Pb,Na)(Li,Al)
 
3
Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(F,OH)
Uvite
Ca(Mg
 
3
)MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Vanadiumdravite
Na(Mg,Fe
2+
 
)
 
3
(V
3+
 
,Cr
3+
 
,Al)
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Related Minerals - Nickel-Strunz Grouping):

- +
9.CK.05Buergerite
Na(Fe
3+
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
O
 
3
F
9.CK.05Chromdravite
Na(Mg
 
3
)Cr
3+
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
9.CK.05Dravite
Na(Mg
 
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
9.CK.05Elbaite
Na(Li
 
1.5
Al
 
1.5
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
9.CK.05Feruvite
Ca(Fe
2+
 
)
 
3
MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
9.CK.05Foitite
(□,Na)(Fe
2+
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
OH
9.CK.05Liddicoatite
Ca(Li
 
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
9.CK.05Olenite
Na(Al
 
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
O
 
3
(OH)
9.CK.05Povondraite
Na(Fe
3+
3
)Mg
 
2
Fe
3+
4
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
9.CK.05Schorl
Na(Fe
2+
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
9.CK.05Uvite
Ca(Mg
 
3
)MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
9.CK.05Magnesiofoitite
(□,Na)(Mg
 
2
Al)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
9.CK.05Rossmanite
☐(LiAl
 
2
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
9.CK.05Vanadiumdravite
Na(Mg,Fe
2+
 
)
 
3
(V
3+
 
,Cr
3+
 
,Al)
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
9.CK.05Oxy-dravite
Na(MgAl
 
2
)MgAl
 
5
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
9.CK.05Oxy-rossmanite
☐(LiAl
 
2
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
9.CK.05Chromo-aluminopovondraite
Na(Cr
 
3
)Mg
 
2
Al
 
4
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
O
9.CK.05Fluor-dravite
Na(Mg
 
3
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
F
9.CK.10Abenakiite-(Ce)
Na
 
26
Ce
 
6
(Si
 
6
O
 
18
)(PO
 
4
)
 
6
(CO
 
3
)
 
6
(SO
 
2
)O
9.CK.15Scawtite
Ca
 
7
(Si
 
3
O
 
9
)
 
2
CO
 
3
 · 2H
 
2
O
9.CK.20Steenstrupine-(Ce)
Na
 
14
Mn
2+
2
(Fe
3+
 
,Mn
3+
 
)
 
2
Ce
 
6
(Zr,Th)(Si
 
6
O
 
18
)
 
2
(PO
 
4
)
 
6
(HPO
 
4
)(OH)
 
2
 · 2H
 
2
O
9.CK.20Thorosteenstrupine
CaMnThSi
 
4
O
 
11
(OH)F · 6H
 
2
O

Other Names for Fluor-schorl

Synonyms:
IMA2010-067 Unnamed (F-analogue of Schorl)
Other Languages:
German:Fluor-Schörl

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Fluor-schorl

Reference List:

- +
A. Ertl, U. Kolitsch, S. Prowatke, M. D. Dyar and D. J. Henry (2006): The F-analogue of schorl from Grasstein, Trentino – South Tyrol, Italy: crystal structure and chemistry. Eur. J. Mineral. 18, 583-588.

Henry, D.J. & Dutrow, B.L. (2011): The incorporation of fluorine in tourmaline: internal crystallographic controls or external environmental influences? Canadian Mineralogist 49, 41-56.

Ertl, A., Kolitsch, U., Darby Dyar, M., Meyer, H.-P., Henry, D.J., Rossman, G.R., Prem, M., Ludwig, T., Nasdala, L., Lengauer, C.L., and Tillmanns, E. (2011): Fluor-schorl, IMA 2010-067. CNMNC Newsletter 8, 291; Mineralogical Magazine 75, 289-294.

Internet Links for Fluor-schorl

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    • Localities for Fluor-schorl

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? 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.
    Australia
     
    • Victoria
      • Lake Boga
    		U. Kolitsch (unpubl. results)
    Czech Republic
     
    • Moravia (Mähren; Maehren)
      • Vysočina Region
        • Nedvědice
    		Novak, M., Selway, J. B. & Houzar, S. (1998): Potassium-bearing, fluorine-rich tourmaline from metamorphosed fluorite layer in leucocratic orthogneiss at Nedvedice, Svratka Unit, western Moravia. Journal of the Czech Geological Society 43, 37-44; U. Kolitsch & J. Cempirek, unpublished data
        • Žďár nad Sázavou
          • Velké Meziříčí
    		Burianek, D. & Novak, M. (2004): Morphological and compositional evolution of tourmaline from nodular granite at Lavicky near Velke Mezirici, Moldanubicum, Czech Republic. Journal of the Czech Geological Society 49, 81-90.
    Germany
     
    • Bavaria
      • Franconia
        • Fichtelgebirge
          • Weißenstadt
            • Kirchenlamitz
    		Uwe Kolitsch (unpubl. results)
    • Saxony
      • Erzgebirge
        • Schneeberg District
          • Zschorlau
    		Ertl, A., Kolitsch, U., Darby Dyar, M., Meyer, H.-P., Henry, D.J., Rossman, G.R., Prem, M., Ludwig, T., Nasdala, L., Lengauer, C.L., and Tillmanns, E. (2011): CNMNC Newsletter 8, 291
    Italy
     
    • Trentino-Alto Adige
      • Bolzano Province (South Tyrol)
        • Sarentine Alps (Sarntal Alps)
          • Fortezza (Franzensfeste)
            • Grasstein
    		A. Ertl, U. Kolitsch, S. Prowatke, M. D. Dyar and D. J. Henry (2006): The F-analogue of schorl from Grasstein, Trentino – South Tyrol, Italy: crystal structure and chemistry. Eur. J. Mineral. 18, 583-588; Ertl, A., Kolitsch, U., Darby Dyar, M., Meyer, H.-P., Henry, D.J., Rossman, G.R., Prem, M., Ludwig, T., Nasdala, L., Lengauer, C.L., and Tillmanns, E. (2011): CNMNC Newsletter 8, 291
    Namibia
     
    U. Kolitsch & A. Ertl (unpublished results)
    Norway
     
    • Nordland
      • Meløy
        • Holandsfjord
    		Kolitsch, U., Husdal, T. A., Brandstätter, F. & Ertl, A. (2011): New crystal-chemical data for members of the tourmaline group from Norway: occurences of fluor-schorl and luinaite-(OH). Norsk Bergverksmuseum Skrift 46, 17-24.
      • Sørfold
    		Kolitsch, U., Husdal, T. A., Brandstätter, F. & Ertl, A. (2011) : New crystal-chemical data for members of the tourmaline group from Norway: occurences of fluor-schorl and luinaite-(OH). Norsk Bergverksmuseum Skrift 46, 17-24.
      • Tjeldsund
    		Kolitsch, U., Husdal, T. A., Brandstätter, F. & Ertl, A. (2011) : New crystal-chemical data for members of the tourmaline group from Norway: occurences of fluor-schorl and luinaite-(OH). Norsk Bergverksmuseum Skrift 46, 17-24.
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