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About FoititeHide

Dr. Franklin F. Foit, Jr.
Dark indigo with purple tints to bluish-black.
Vitreous, Sub-Vitreous
Specific Gravity:
Crystal System:
Named in 1993 by D. J. MacDonald, Frank C. Hawthorne, and Joel D.Grice in honor of Franklin F. Foit, Jr. (b. 1942), mineralogist and specialist in the tourmaline group, at Washington State University in Pullman, Washington, USA.
Type Locality:
A vacancy-dominant member of the Tourmaline Group. The Fe2Al-OH-analogue of oxy-foitite.

Correct identification is only possible by suitable analytical methods.

Relatively common among low-temperature (authigenic) tourmalines (Henry & Dutrow, 2012).

Visit for gemological information about Foitite.

Classification of FoititeHide


9 : SILICATES (Germanates)
C : Cyclosilicates
K : [Si6O18]12- 6-membered single rings, with insular complex anions
Dana 7th ed.:

61 : CYCLOSILICATES Six-Membered Rings
3 : Six-Membered Rings with borate groups

Physical Properties of FoititeHide

Vitreous, Sub-Vitreous
Transparent, Translucent
Dark indigo with purple tints to bluish-black.
None Observed
Conchoidal, Sub-Conchoidal
3.17 g/cm3 (Measured)    3.14 g/cm3 (Calculated)

Optical Data of FoititeHide

Uniaxial (-)
RI values:
nω = 1.664 nε = 1.642
Max Birefringence:
δ = 0.022
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Optical Extinction:

Chemical Properties of FoititeHide

IMA Formula:
Common Impurities:

Crystallography of FoititeHide

Crystal System:
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
Cell Parameters:
a = 15.967 Å, c = 7.126 Å
a:c = 1 : 0.446
Unit Cell V:
1,573.34 ų (Calculated from Unit Cell)
Rod-like crystals with the common prisms and pyramids of the tourmaline group.

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
6.34 Å(80)
4.21 Å(50)
3.99 Å(40)
3.45 Å(90)
2.94 Å(70)
2.57 Å(100)
2.04 Å(30)
1.27 Å(30)

Type Occurrence of FoititeHide

Geological Setting of Type Material:
Granite pegmatite gem pockets.

Synonyms of FoititeHide

Other Language Names for FoititeHide


Relationship of Foitite 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
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
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-draviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3FTrig. 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
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
UM2000-64-SiO:BFeHKMgK, Mg, Fe, Si, B, O, H
Unnamed (Pb-dominant Tourmaline)(Pb,Na)(Li,Al)3Al6(Si6O18)(BO3)3(OH)3(F,OH)
Uvite SeriesCa(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(F/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

Common AssociatesHide

Associated Minerals Based on Photo Data:
Elbaite10 photos of Foitite associated with Elbaite on
Schorl10 photos of Foitite associated with Schorl on
Elbaite-Liddicoatite Series7 photos of Foitite associated with Elbaite-Liddicoatite Series on
Quartz6 photos of Foitite associated with Quartz on
Albite4 photos of Foitite associated with Albite on
Aquamarine3 photos of Foitite associated with Aquamarine on
Fluorite3 photos of Foitite associated with Fluorite on
Microcline3 photos of Foitite associated with Microcline on
Xanthoxenite2 photos of Foitite associated with Xanthoxenite on
Beryl2 photos of Foitite associated with Beryl on

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.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.05Fluor-draviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3FTrig. 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.05Uvite (OH-dominant end-member)Ca(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(OH)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+2(Fe3+,Mn3+)2Ce6(Zr,Th)(Si6O18)2(PO4)6(HPO4)(OH)2 · 2H2OTrig.
9.CK.20Thorosteenstrupine(Ca,Th,Mn)3Si4O11F · 6H2O

Related Minerals - Dana Grouping (8th Ed.)Hide 3m : R3m SeriesCa(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(F/OH)Trig. 3m : R3m 3m : R3m 3m : R3m 3m : R3m 3m : R3m 3m : R3m 3m : R3m

Fluorescence of FoititeHide

Not fluorescent.

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 FoititeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
MacDonald, D.J., Hawthorne, F.C., and Grice, J.D. (1993) Foitite Fe2 2+(Al,Fe 3+)]Al6Si6O18(BO3)3(OH)4, a new alkali-deficient tourmaline: Description and crystal structure. American Mineralogist: 78: 1299-1303.
New Minerals (1997), New Minerals 1990-1994.
Aurisicchio, C., Ottolini, L., and Pezzotta, F. (1999) Electron- and on-microprobe analyses, and genetic interferences of tourmalines of the foitite-schorl solid solution, Elba Island (Italy). Eurpean Journal of Mineralogy: 11: 217-225.
Francis, C.A., Dyar, M.D., Williams, M.L., and Hughes, J.M. (1999) The occurrence and crystal structure of foitite from a tungsten-bearing vein at Copper Mountain, Taos County, New Mexico. Canadian Mineralogist: 37: 1431-1438.
Kahlenberg, V. and Velickov, B. (2000) Structural investigations on a synthetic alkali-free hydrogen-deficient Fe-tourmaline (foitite). European Journal of Mineralogy: 12: 947-953.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Medaris, L.G., Jr., Fournelle, J.H., and Henry, D.J. (2003) Tourmaline-bearing quatz veins in the Baraboo quartzite, Wisconsin: occurrence and significance of foitite and "oxy-foitite". Canadian Mineralogist: 41: 749-758.
Henry, D.J. & Dutrow, B.L. (2012): Tourmaline at diagenetic to low-grade metamorphic conditions: Its petrologic applicability. Lithos 154, 16-32.

Internet Links for FoititeHide

Localities for FoititeHide

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.
  • Nuristan
    • Kamdesh District
Rob Lavinsky photo; Natkaniec-Nowak, L., Dumańska-Słowik, M. & Ertl, A. (2009): “Watermelon” tourmaline from the Paprok mine (Nuristan, Afghanistan). Neues Jahrbuch für Mineralogie - Abhandlungen, 186, 185-193.
  • Eastern Antarctica
    • Princess Elizabeth Land
      • Ingrid Christensen Coast
        • Prydz Bay
Wadokski, E. R. Grew, E.S. & Yates, M.G. (2011): Compositional evolution of tourmaline-supergroup minerals from granitic pegmatites in the Larsemann Hills, East Antartica. Canadian Mineralogist. 49: 382-405
  • Catamarca Province
    • Belén Department
      • Papachacra
Rocks & Min. (2007) 82:234-235
  • Tasmania
    • Waratah-Wynyard municipality
      • Waratah district
        • Waratah
  • Lower Austria
    • Waldviertel
      • Senftenberg
Ertl, A., Schuster, R., Hughes, J.M., Ludwig, T., Meyer, H.-P., Finger, F., Dyar, M.D., Ruschel, K., Rossman, G.R., Klötzli, U., Brandstätter, F., Lengauer, C.L., Tillmanns, E. (2012): Li-bearing tourmalines in Variscan granitic pegmatites from the Moldanubian nappes, Lower Austria. European Journal of Mineralogy, 24, 695-715.
  • Minas Gerais
    • Conselheiro Pena
      • Penha do Norte
Sergio Varvello photo
    • São José da Safira
Canadian Mineralogist 38: 1399-1408 (2000); Dutrow, B. and Henry, D. J. (2000) Complexly zoned fibrous tourmaline: A record of evolving magmatic and hydrothermal fluids. Canadian Mineralogist, 38, 131-143.
  • Sofia City Province
    • Samokov Obshtina
      • Samokov Town
Vasil Arnaudov, Svetoslav Petrusenko, and Chavdar Karov (2003): Sherl, foytit i dravit v pegmatiti ot metamorfnata mantiya na Planskiya pluton, Yugozapadna B'lgariya [Schorl, foitite and dravite from pegmatites in the metamorphic zone of Plana Pluton, SW Bulgaria]. Geokhimiya, Mineralogiya i Petrologiya, 40, 97-107 (in Bulgarian with English abtract). []
  • British Columbia
    • Revelstoke Mining Division
      • Revelstoke
Dixon, A. (2014, October). Mount Begbie Pegmatite Group, British Columbia, Canada–evolution from Barren to Complex Rare-element Pegmatites. In 2014 GSA Annual Meeting in Vancouver, British Columbia.
  • Manitoba
    • Lac-du-Bonnet area
      • Bernic Lake
Can Min.38:877-891; Selway, J. B.; Cerny, P.; Hawthorne, F. C.; Novak, M. (2000): The Tanco pegmatite at Bernic lake, Manitoba. XIV. Internal tourmaline. Canadian Mineralogist 38, 877-891.
    • Red Cross Lake
Cerny et al. 2012; Černý, O., Teertstra, D.K., Chapman, R., Selway, J.B., Hawthorne, F.C., Ferreira, K., Chackowsky, L.E., Wang, X.J. & and Meintzer, R.E. (2012)
  • Northwest Territories
Geological Association of Canada (2014) Abstracts Fredericton Vol 37
  • Ontario
    • Kenora District
      • Pakeagama Lake Area
Andrew G. Tindle, Fred W. Breaks and Julie B. Selway (2002) Tourmaline in petalite-subtype granitic pegmatites; evidence of fractionation and contamination from the Paleagama Lake and Separation Lake areas of northwestern Ontario, Canada. The Canadian Mineralogist 40:753-78
      • Root Lake pegmatite group
        • Root Lake Area
Tindle, A. G., Selway, J. B. & Breaks, F. W. (2005): Liddicoatite and associated species from the McCombe spodumene-subtype rare-element granitic pegmatite, northwestern Ontario, Canada. Canadian Mineralogist 43, 769-793.
Tindle, A.G., Breaks, F.W., and Selway, J.B. (2002) Tourmaline in petalite-subtype gramitic pegmatites: evidence of fractionation and contamination from Pakeagama Lake and Separation Lake areas of northwestern Ontario, Canada. Canadian Mineralogist, 40, 753-788.
  • Xinjiang
    • Yili Hasake Autonomous Prefecture (Ili Kazakh Autonomous Prefecture)
      • Aletai Prefecture (Altay Prefecture)
        • Fuyun Co. (Koktokay Co.)
          • Koktokay pegmatite field (Keketuohai pegmatite field)
            • Altay Mine
Zhang AC, Wang Ru, Hu H, Chen XM (2004) Occurrences of foitite and rossmanite from the Koktokay No. 3 pegmatite dyke, Altai, Northwestern China: A record of hydrothermal fluids. Canadian Mineralogist, 42, 873-883.
Czech Republic
  • South Bohemian Region
    • Písek District
Petr Černý, Milan Novák, Ron Chapman, Karen J. Ferreira (2007) Subsolidus behavior of niobian rutile from the Písek region, Czech Republic: a model for exsolution in W- and Fe2+>>Fe3+-rich phases. Journal of Geosciences, 52:143–159
Historic mineral collection National museum of Czech Republic
  • Vysočina Region
    • Žďár nad Sázavou District
      • Bystřice nad Pernštejnem
      • Křižanov
Novák, M., Staněk, J.: Lepidolitový pegmatit od Dobré Vody u Velkého Meziříčí, západní Morava. Acta Musei Moraviae, Scientiae geologicae, 1999, roč. 84, s. 3 - 44.
        • Dolní Bory
Staněk, J.: Asociace minerálů významnějších pegmatitových žil v Hatích u Dolních Borů na západní Moravě. Acta Musei Moraviae, Scientiae naturales, 1997, roč. 82, 3-19.
Novák, M., Johan, Z., Škoda, R., Černý, P., Šrein, V., & Veselovský, F. (2008). Primary oxide minerals in the system WO3–Nb2O5–TiO2–Fe2O3–FeO and their breakdown products from the pegmatite No. 3 at Dolní Bory-Hatě, Czech Republic. European Journal of Mineralogy, 20(4), 487-499.
      • Rožná
Novák, M., Houzar, S., Pfeiferová, A.: Přehled mineralogie, petrografie a historie klasické lokality lepidolitového pegmatitu v Rožné u Bystřice nad Pernštejnem, západní Morava. Acta Musei Moraviae, Sci. geol., 83:3-48.
P. Pauliš (2001): Nejzajímavější naleziště Moravy a Slezska. Kuttna, Kutná Hora.
P. Pauliš (2001): Nejzajímavější naleziště Moravy a Slezska. Kuttna, Kutná Hora.
  • Saxony
    • Chemnitz
      • Penig
Gunnar Färber
    • Erzgebirgskreis
      • Pöhla
Lefebvre, M. G., Romer, R. L., Glodny, J., & Roscher, M. (2017) Two stages of skarn formation in the Hämmerlein tin-skarn deposit, western Erzgebirge, Germany. Mineral Resources to Discover - 14th SGA Biennial Meeting 2017, Volume 4 pp 1305-1308
    • Görlitz
      • Löbau
        • Czorneboh
          • Wuischke
Witzke, T., Giesler, T. (2008): Neufunde und Neubestimmungen aus der Lausitz, Der Aufschluss, Vol. 59, 245-252
  • Pest County
    • Szob District
WDS: Béla Fehér
  • Leinster
    • Co. Dublin
      • Barnacullia
David Jordan
  • Lombardy
    • Brescia Province
      • Camonica Valley
        • Adamello-Brenta Natural Park
          • Adamello Massif
            • Mt. Foppa
              • Forcel Rosso Gully (Forcel Rosso Pass)
Diella, V., Pezzotta, F., Bocchio, R., Marinoni, N., Cámara, F., Langone, A., Adamo, I., Lanzafame, G. (2018): Gem-quality tourmaline from LCT pegmatite in Adamello Massif, Central Southern Alps, Italy: An investigation of its mineralogy, crystallography and 3D inclusions. Minerals 8, 593.
    • Varese Province
      • Ceresio Valley
Vignola, P., Gentile, P., Risplendente, A. (2018): Sulla tormalina del granofiro di Cuasso al Monte (Varese). MICRO 16 (1), 44-49.
  • Sardinia
    • South Sardinia Province
      • Arburese
Bosi, F., Cuccuru, S., Naitza, S., Skogby, H., Secchi, F., Conte, A.M., Hålenius, U., De La Rosa, N., Kristiansson, P., Nilsson, E.J.C., Ros, L., and Andreozzi, G.B. (2017) Schorlitic and foititic tourmalines from the Arbus pluton, Sardinia, Italy: A first detailed crystal-chemical study. Tourmaline 2017 International Symposium, Hotel Skalský dvůr, Bystřice nad Pernštejnem, Czech Republic, June 23-28, 2017. Book of abstracts, 14-16; Bosi, F., Naitza, S., Skogby, H., Secchi, F., Conte, A.M., Cuccuru, S., Hålenius, U., De La Rosa, N., Kristiansson, P., Nilsson, E.J.C., Ros, L., and Andreozzi, G.B. (2018) Late magmatic controls on the origin of schorlitic and foititic tourmalines from late-Variscan peraluminous granites of the Arbus pluton (SW Sardinia, Italy): crystal-chemical study and petrological constraints. Lithos, vol. 308-309, 395-411.
  • Tuscany
    • Livorno Province
      • Elba Island
        • Campo nell'Elba
          • San Piero in Campo
F. Pezzotta, F.C. Hawthorne, M.A. Cooper, D.K. Teerstra (1996) - Fibrous foitite from S. Piero in Campo, Elba, Italy. - Canadian Mineralogist, 34: 741-744.
Barsotti, G., & Nannoni, R. (2006). Rocce, minerali e miniere delle isole dell'Arcipelago Toscano. Pacini editore, 152 pp.
Pezzotta, F., Hawthorne, F.C., Cooper, M.A., Teertstra, D.K. (1996): Fibrous foitite from San Piero in Campo, Elba, Italy. Can. Mineral., 34, 741-744.
          • Sant'Ilario in Campo
            • Catri
              • Fosso Marcianella Pegmatite
Field Trip Excursion Programm IMA, May 29, 2005 (M.E. Ciriotti).
  • Fukushima
    • Koriyama
Kato et al (1994) Koubutsu-Gakkai Kou'en-Youshi, 177.
  • Kochi
Minakawa& Adachi (1995) Chigaku Kenkyu, 44, 99-103.
  • Miyazaki
    • Hinokage
Alfredo Petrov specimen
    • Koyu district
      • Kijō
Minakawa & Adachi (1995) Chigaku Kenkyu, 44, 99-103.
  • Mandalay Region
    • Pyin-Oo-Lwin District
various added photos
  • Erongo Region
    • Arandis
      • Cape Cross area
Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 585 pp. (in English)
    • Karibib
Foitite has been identified by Prof. Al Falster (unpublished results) as fibrous structures in schorl crystals
Jahn, St. & Bode, R. (2003): Mineralogische Neuigkeiten vom Erongo in Namibia (III). Mineralien-Welt 14 (6), 58-64 (in German). [reported but not based on reliable analyses]; Ferdinando Giovine collection (analysed by Prof. Al Falster)
      • Usakos
Jahn, S. (2010): Blue Beauties - Jeremejewit-Neufund auf der Farm Ameib, Namibia. Mineralien-Welt 21 (4), 31-33.
  • Gilgit-Baltistan
Journal of Himalayan Earth Sciences 43 (2010) 1-1
  • Greater Poland Voivodeship
    • Jarocin Co.
      • Gmina Jarocin
Pieczka, A.; Buniak, A.; Majka, J.; Harryson, H. (2011): Si-deficient foitite with [4]Al and [4]B from the ‘Ługi-1’ borehole, southwestern Poland. Journal of GEOsciences 56, 389-398.
  • Lower Silesian Voivodeship
    • Jelenia Góra Co.
      • Karpacz
Szełęg, E., Galuskina, I., Prusik, K. 2010: A Sc-Nb oxide from corundum pegmatites of the Krucze Skały in Karpacz (Karkonosze massif, Lower Silesia, Poland) – a potentially new mineral of the ScNbO4 – FeWO4 series. 20th General Meeting of the IMA (IMA2010), Budapest, Hungary, August 21-27, CD of Abstracts, p. 501
    • Świdnica Co.
      • Gmina Świdnica
        • Michałkowa pegmatites
Pieczka, A., Hawthorne, F.C., Gołębiowska, B., Włodek, A., Grochowina, A. (2016): Maneckiite, ideally NaCa2Fe2+2(Fe3+Mg)Mn2(PO4)6(H2O)2, a new phosphate mineral of the wicksite supergroup from the Michałkowa pegmatite, Góry Sowie block, southwestern Poland. Mineralogical Magazine: 80: (in press
    • Świeradów Zdrój area
      • Garby Izerskie Mts
Długoszewska A. 2005: Minerals from pegmatoids of the northern part of the Karkonosze Massif cover. Mineralogical Society of Poland - Special Papers, vol. 26, 153-156
  • Castelo Branco
    • Covilhã
  • Viseu
    • Vila Nova de Paiva
Dias, P. & Leal Gomes, C. (2009) – Topaz bearing tourmalinites and topazite veins from Queiriga Old Mines – Viseu – Central Portugal. Estudos Geológicos. (Special Issue of contributions to the 4th International Symposium on Granitic Pegmatites). 19 (2), pp.111­‑116.
  • Tuva
Kuzhuget, R. V., Zaikov, V. V., Lebedev, V. I., & Mongush, A. A. (2015). Gold mineralization of the Khaak-Sair gold-quartz ore occurrence in listwanites (western Tuva). Russian Geology and Geophysics, 56(9), 1332-1348.
  • Banská Bystrica Region
    • Detva Co.
      • Vígľašská Huta - Kalinka
Juraj ŽItňan, Peter Koděra & Pavel Uher (2011) Characteristics of advanced argillic alteration at Biely Vrch and Kalinka localities, Javorie stratovolcano, Slovakia.SGA Student Conference Mineral resources for the society Prague, April15 19,2011
    • Rimavská Sobota Co.
      • Tisovec
Bačík P., Ertl A., Števko M., Giester G., Sečkár P. (2015): Acicular zoned tourmaline (magnesio-foitite to foitite) from a quartz vein near Tisovec, Slovakia: the relationship between crystal chemistry and acicular habit. Canadian Mineralogist, 53, 2, 221-234.
  • Košice Region
    • Košice Co.
Pauliš P., Ďuďa R., 2002: Nejzajimavejší mineralogická nalezište Slovenska. Kuttna, Kutná Hora, 134p.
    • Spišská Nová Ves Co.
      • Hnilec (Hniletz; Nyilas; Nagyhnilec)
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
  • Community of Madrid
Tanago, J. G., Lozano, P. L., Larios, A. , La Iglesia, A. (2012) Stokesite crystals from La Cabrera, Madrid, Spain. Mineralogical Record 43:499-508
  • Stockholm County
    • Haninge
      • Utö
Selway, J. B.; Smeds, S.-A.; Černý, P.; Hawthorne, F. C. (2002): Compositional evolution of tourmaline in the petalite-subtype Nyköpingsgruvan pegmatites, Utö, Stockholm Archipelago, Sweden. GFF 124, 93-102
  • Black Sea Region
    • Giresun Province
      • Şebinkarahisar
Canadian Mineralogist 37: 155-161.; Mineral. Petrol. 94 (2008) 195-208.
Am.Min. (1993): 78: 1299.
    • Riverside Co.
      • Cahuilla Mining District
        • Little Cahuilla Mountain
Caltech, Phys Chem Minerals 14, p. 163.
    • San Diego Co.
      • Pala Mining District
        • Pala
          • Chief Mountain
            • Pala Chief Mine (Chief mine; MS 6452; Salmons mine)
Hapeman, Jeffrey R. (2011)
          • Hiriart Mountain (Hariat Mtn; Harriot Mtn; Heriart Mtn; Heriot Mtn; Hiriat Hill)
Rocks & Minerals: May, 1999
Osborn, P. 2007. Description of the Naylor Rock location and Foitite discovery on Hiriart Mountain by Phil Osborn of Hemet, Riverside Co., California. Personal communication with S. L. Ritchie; 7/27.
Novák, M. & Taylor, M.C. (2000): Foitite: formation during late stages of evolution of complex granitic pegmatites at Dobrá Voda, Czech Republic, and Pala, California, U.S.A. Canadian Mineralogist 38, 1399-1408.; Fisher, J., 2002, Mineralogical Record 33(5), 363-407
      • Ramona Mining District
        • Ramona
David London, George B. Morgan VI, and James L. Maner (2016) Pegmatites of the Little Three mine, Ramona, San Diego County, California. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
  • Connecticut
    • Middlesex Co.
      • East Hampton (Chatham)
Fred E Davis Collection
      • Portland
        • Collins Hill
          • Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries)
Jarnot, Bruce M. (2011): Letters: Connecticut Update. Rocks & Minerals: 86(4): 299.
  • Maine
    • Androscoggin Co.
      • Poland
Pedro-Pablo Gil-Crespo, Uxue Ostaikoetxea, Encarnación Roda-Robles, William Simmons, James Nizamoff (2012): Caracterización por XRD y Espectroscopía NIR de Turmalinas de la Serie Chorlo-Elbaita-Rossmanita de la Pegmatita de Berry-Havey (Maine, USA). Macla 16, p. 222-223.; Jeffrey Morrison, William Simmons, Alexander Falster, Encar Roda Robles (2018) The havey gem tourmaline pegmatite, Poland, and roscoggin county, maine – an example of highly
    • Oxford Co.
      • Albany
King, V., 2009, Maine Feldspar, Families, and Feuds
King, V. (ed.), 2009, Maine feldspar, Families, and Feuds
      • Buckfield
Van King
      • Greenwood
        • Uncle Tom Mountain
Falster, A.U., Simmons, W.B., Sprague, R. (2006) 33rd Rochester Mineralogical Symposium, abstracts, 14-15.;;; optically confirmed by A. Falster of MMGM Lab.
      • Newry
King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed.), 2000, Mineralogy of Maine, V. 2, with updates by Van King
King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.
Van King, unpublished property evaluation
      • Paris ; Encar Roda-Robles, William Simmons, Alexander Falster, Alfonso Pesquera, Pedro-Pablo Gil-Crespo (2018) Paragenetic and compositional evolution of tourmaline from the Mt. Mica pegmatite (Maine, USA). in abstracts of the 22nd IMA Meeting Melbourne p 498
    • Sagadahoc Co.
      • Topsham
King and Foord, 2000, Addenda to Volume 1, Mineralogy of Maine, v. 2.; Clara Brennan, Samuel M. Cameron, and Mona-Liza C. Sirbescu (2016) Crystallization of the Fisher Quarry Pegmatite, Sagadahoc Co., Maine: Preliminary Insights from Fluid Inclusions. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
  • New Mexico
    • Taos Co.
      • Picuris District
        • Copper Mountain
Francis, C.A., Dyar, M.D., Williams, M.L., and Hughes, J.M. (1999), Canadian Mineralogist: 37: 1431-1438.
  • Wisconsin
Medaris, J. & J. Fournelle (2003) Tourmaline-bearing quartz veins in the Baraboo Quartzite, Wisconsin: Occurrence and significance of foitite and "oxy-foitite": Canadian Mineralogist: 71: 749-758.
Medaris, L., Fournelle, J. & Henry, D.( 2003) Tourmaline-bearing quartz veins in the Baraboo Quartzite, Wisconsin: occurrence and significance of foitite and oxy-foitite: The Canadian Mineralogist: 41: 749-758.
      • Sampler
Medaris, L.G. , Fournelle, J. and Henry D., (2001) "Tourmaline-bearing quartz veins in the Baraboo Quartzite, Wisconsin: Occurrence and significance of foitite and oxy-foitite, The Canadian Mineralogist, vol. 41, p. 749-758; Medaris, L., Fournelle, J., Henry, D. (2003) Tourmaline-bearing quartz veins in the Baraboo Quartzite, Wisconsin: occurrence and significance of foitite and "oxy-foitite". The Canadian Mineralogist, 41:3, 749-758.
  • Eastern Province
ONDRUŠ P, VRÁNA S, MAŠLÁŇ M (2002) Chemical composition and crystal structure refinement of schorl from the Lundazi pegmatite field, Zambia. Bulletin of the Czech Geological Survey, Vol. 77, No. 1, 23–28
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