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About Fluor-draviteHide

Blackish brown
Specific Gravity:
3.120 (Calculated)
Crystal System:
Named for being the fluorine analogue of dravite.
Tourmaline Group.

The F analogue of dravite.

Classification of Fluor-draviteHide

Approval Year:

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

Physical Properties of Fluor-draviteHide

Blackish brown
Pale brown
3.120 g/cm3 (Calculated)

Optical Data of Fluor-draviteHide

Uniaxial (-)
RI values:
nω = 1.645(2) nε = 1.621(2)
Max Birefringence:
δ = 0.024
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
O = pale yellow-brown, E = colourless

Chemical Properties of Fluor-draviteHide

IMA Formula:
Common Impurities:

Crystallography of Fluor-draviteHide

Crystal System:
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
Cell Parameters:
a = 15.955(3) Å, c = 7.153(2) Å
a:c = 1 : 0.448
Unit Cell V:
1576.9 ų

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0002246Fluor-draviteBloodaxe E S, Hughes J M, Dyar M D, Grew E S, Guidotti C V (1999) Linking structure and chemistry in the schorl-dravite series Sample #32008 American Mineralogist 84 922-9281999Tait farm, Dungannon Township, Hastings County, Ontario, Canada0293
0002915Fluor-draviteCamara F, Ottolini L, Hawthorne F C (2000) Crystal chemistry of three tourmalines by SREF, EMPA and SIMS American Mineralogist 87 1437-14422000a pegmatite at Minas Gerais, Brazil0293
0018741Fluor-draviteClark C M, Hawthorne F C, Ottolini L (2011) Fluor-dravite, NaMg3Al6Si6O18(BO3)3(OH)3F, a new mineral species of the tourmaline group from the Crabtree Emerald mine, Mitchell County, North Carolina: Description and crystal structure The Canadian Mineralogist 49 57-622011the Crabtree Emerald mine, Mitchell County, North Carolina, USA0293
0007049Fluor-draviteBosi F, Lucchesi S (2004) Crystal chemistry of the schorl-dravite series European Journal of Mineralogy 16 335-3442004Olkhon (Lake Baikal), Siberia0293
0018790Fluor-draviteGrice J D, Ercit T S (1993) Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula Neues Jahrbuch fur Mineralogie, Abhandlungen 165 245-2661993Bronson Station, Hastings Co., Ontario, Canada0293
0018791Fluor-draviteGrice J D, Ercit T S (1993) Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula Neues Jahrbuch fur Mineralogie, Abhandlungen 165 245-2661993Pierrepont, St, Lawrence Co., New York, USA0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
6.375 Å(19)
3.998 Å(22)
3.475 Å(100)
2.961 Å(60)
2.583 Å(67)
2.392 Å(14)
2.123 Å(14)
2.043 Å(19)

Type Occurrence of Fluor-draviteHide

General Appearance of Type Material:
Isolated anhedral grains up to a few mm across.
Place of Conservation of Type Material:
Smithsonian Institution, Washington, D.C., USA (catalogue number 121341).
Geological Setting of Type Material:
At or near the boundary of a small body of granitic pegmatite with the surrounding country-rock.
Associated Minerals at Type Locality:

Synonyms of Fluor-draviteHide

Relationship of Fluor-dravite to other SpeciesHide

Other Members of this group:
AdachiiteCaFe3Al6(Si5AlO18)(BO3)3(OH)3(OH)Trig. 3m : R3m
BosiiteNaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Celleriite□(Mn2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
Chromo-alumino-povondraiteNa(Cr3)(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
DarrellhenryiteNa(LiAl2)Al6(BO3)3Si6O18(OH)3O Trig. 3m : R3m
DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
DutrowiteNa(Fe2+2.5Ti0.5)Al6(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
FeruviteCa(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
Fluor-buergeriteNa(Fe3+3)Al6(Si6O18)(BO3)3O3FTrig. 3m : R3m
Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-schorlNa(Fe2+3)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-tsilaisiteNa(Mn2+)3Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-uviteCaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Foitite(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OHTrig. 3m : R3m
LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
LucchesiiteCaFe2+3 Al6(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)Mon. m : Bm
Magnesio-lucchesiiteCaMg3Al6(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
MaruyamaiteK(MgAl2)(Al5Mg)(BO3)3(Si6O18)(OH)3OTrig. 3m : R3m
Oxy-chromium-draviteNa(Cr)3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O Trig. 3m : R3m
Oxy-draviteNa(MgAl2)MgAl5(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Oxy-foitite□(Fe2+Al2)Al6(Si6O18)(BO3)3(OH)3OTrig. 3m (3 2/m) : R3m
Oxy-schorlNa(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Oxy-vanadium-draviteNa(V)3(V4Mg2)Si6O18(BO3)3(OH)3OTrig. 3m : R3m
Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
SchorlNa(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
TsilaisiteNa(Mn2+)3Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
Unnamed (Pb-analogue of Fluor-liddicoatite)(Pb,Na)(Li,Al)3Al6(Si6O18)(BO3)3(OH)3(F,OH)
UviteCaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
Vanadio-oxy-chromium-draviteNa(V)3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O Trig. 3m : R3m
Vanadio-oxy-draviteNaV3(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m
Forms a series with:

Related Minerals - Nickel-Strunz GroupingHide

9.CK.Fluor-schorlNa(Fe2+3)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
9.CK.DarrellhenryiteNa(LiAl2)Al6(BO3)3Si6O18(OH)3O Trig. 3m : R3m
9.CK.AdachiiteCaFe3Al6(Si5AlO18)(BO3)3(OH)3(OH)Trig. 3m : R3m
9.CK.BosiiteNaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
9.CK.05Fluor-buergeriteNa(Fe3+3)Al6(Si6O18)(BO3)3O3FTrig. 3m : R3m
9.CK.05DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
9.CK.05ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
9.CK.05FeruviteCa(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
9.CK.05Foitite(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OHTrig. 3m : R3m
9.CK.05LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
9.CK.05SchorlNa(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
9.CK.05Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
9.CK.05TsilaisiteNa(Mn2+)3Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
9.CK.05Oxy-vanadium-draviteNa(V)3(V4Mg2)Si6O18(BO3)3(OH)3OTrig. 3m : R3m
9.CK.05Oxy-draviteNa(MgAl2)MgAl5(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
9.CK.05Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)Mon. m : Bm
9.CK.05Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
9.CK.05Chromo-alumino-povondraiteNa(Cr3)(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
9.CK.05Oxy-schorlNa(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
9.CK.05Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
9.CK.05Oxy-chromium-draviteNa(Cr)3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O Trig. 3m : R3m
9.CK.05Fluor-tsilaisiteNa(Mn2+)3Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
9.CK.05Vanadio-oxy-chromium-draviteNa(V)3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O Trig. 3m : R3m
9.CK.05Fluor-uviteCaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
9.CK.05Vanadio-oxy-draviteNaV3(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m
9.CK.10Abenakiite-(Ce)Na26Ce6(Si6O18)(PO4)6(CO3)6(SO2)OTrig. 3 : R3
9.CK.15ScawtiteCa7(Si3O9)2CO3 · 2H2OMon. 2/m
9.CK.20Steenstrupine-(Ce)Na14Mn2+2Fe3+2Ce6Zr(Si6O18)2(PO4)6(PO3OH)(OH)2 · 2H2OTrig.
9.CK.20Thorosteenstrupine(Ca,Th,Mn)3Si4O11F · 6H2O

Fluorescence of Fluor-draviteHide


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 Fluor-draviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Clark, C.M., Hawthorne, F.C., Ottolini, L. (2011): Fluor-dravite, NaMg3Al6Si6O18(BO3)3(OH)3F, a new mineral of the tourmaline group from the Crabtree emerald mine, Mitchell County, North Carolina: description and crystal structure. Canadian Mineralogist, 49, 57-62.

Internet Links for Fluor-draviteHide

Localities for Fluor-draviteHide

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.
  • Badakhshan
    • Khash & Kuran Wa Munjan Districts
Gunnar Färber
  • Ontario
    • Kenora District
      • Brownridge Township
Brand, Allison A., Groat, Lee A., Linnen, Robert L., Garland, Mary I., Btraks, Frederick W., and Giuliani, Gaston, 2009, Emerald Lake Mineralization Associated with the Mavis Lake Pegmatite Group, near Dryden, Ontario, Canadian Mineralogist, v 47, p. 315-336.
Czech Republic
  • Vysočina Region
    • Žďár nad Sázavou District
Burianek, D. & Novak, M. (2004): Morphological and compositional evolution of tourmaline from nodular granite at Lavičky near Velké Meziříčí, Moldanubicum, Czech Republic. Journal of the Czech Geological Society 49, 81-90.
  • Saxony
    • Mittelsachsen
      • Lunzenau
Gunnar Färber
  • South Aegean
    • Syros
Marco E. Ciriotti collection - EDS probed 2010; Tony Nikischer
Tony Nikischer
  • Zambezia Province
    • Alto Ligonha District
Neiva, Ana M.R.; Leal Gomes, Carlos A.A. (2012): Tourmaline-group minerals in the Naipa Li-Cs-Ta granitic pegmatite group, Mozambique: tracers of magmatic to post-magmatic evolution trends. Neues Jahrbuch fur Mineralogie - Abhandlungen, 189, 1-20.
  • Nordland
    • Narvik
      • Kjøpsvik
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.
  • Telemark
    • Bamble
Gunnar Färber
  • New York
    • St. Lawrence Co.
      • Gouverneur
Steve Chamberlain collection
  • North Carolina
    • Mitchell Co.
      • Spruce Pine Mining District
        • Spruce Pine
Clark, C.M., Hawthorne, F.C., Ottolini, L. (2011): Fluor-dravite, NaMg3Al6Si6O18(BO3)3(OH)3F, a new mineral of the tourmaline group from the Crabtree emerald mine, Mitchell County, North Carolina: description and crystal structure. Canadian Mineralogist, 49, 57-62.
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