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Colourless, violet or white; colourless in transmitted light
Crystal System:
Named in 1926 by Per Geijer allusion to its composition, containing both FLUOrine and BORon.
Isostructural with:
Hide all sections | Show all sections

Classification of FluoboriteHide

Approved, 'Grandfathered' (first described prior to 1959)

A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.

1 : Monoborates

10 : Borates with other anions
1 : Borates with halide

Physical Properties of FluoboriteHide

Transparent, Translucent
Colourless, violet or white; colourless in transmitted light
3½ on Mohs scale
On [0001].

Optical Data of FluoboriteHide

Uniaxial (-)
RI values:
nω = 1.570 nε = 1.534
Max Birefringence:
δ = 0.036
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of FluoboriteHide

IMA Formula:

Crystallography of FluoboriteHide

Crystal System:
Cell Parameters:
a = 8.8 Å, c = 3.1 Å
a:c = 1 : 0.352
Unit Cell V:
207.90 ų (Calculated from Unit Cell)
Acicular hexagonal prisms without measurable terminal faces. Fan-shaped or stellate groups. Fluffy, felted aggregates; rice-like grains.

Type Occurrence of FluoboriteHide

Geological Setting of Type Material:
Contact metasomatic magnetite deposit.
Associated Minerals at Type Locality:

Synonyms of FluoboriteHide

Other Language Names for FluoboriteHide

Simplified Chinese:氟硼镁石
Traditional Chinese:氟硼鎂石

Relationship of Fluoborite to other SpeciesHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Calcite12 photos of Fluoborite associated with Calcite on
Graphite8 photos of Fluoborite associated with Graphite on
Norbergite6 photos of Fluoborite associated with Norbergite on
UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995)4 photos of Fluoborite associated with UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995) on
Dolomite4 photos of Fluoborite associated with Dolomite on
Hetaerolite3 photos of Fluoborite associated with Hetaerolite on
Pyrochroite3 photos of Fluoborite associated with Pyrochroite on
Tephroite3 photos of Fluoborite associated with Tephroite on
Mooreite3 photos of Fluoborite associated with Mooreite on
Sussexite2 photos of Fluoborite associated with Sussexite on

Related Minerals - Nickel-Strunz GroupingHide

6.AB.05HambergiteBe2(BO3)(OH)Orth. mmm (2/m 2/m 2/m) : Pbca
6.AB.10BerboriteBe2(BO3)(OH,F) · H2OTrig.
6.AB.15JeremejeviteAl6(BO3)5(F,OH)3Hex. 6/m : P63/m
6.AB.40BlatteriteSb5+(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32Orth. mmm (2/m 2/m 2/m) : Pnnm
6.AB.45Aluminomagnesiohulsite(Mg,Fe2+)2(Al,Mg,Sn)(BO3)O2Mon. 2/m
6.AB.50HydroxylboriteMg3(BO3)(OH)3Hex. 6/m : P63/m
6.AB.55ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2OMon.
6.AB.55WightmaniteMg5(BO3)O(OH)5 · 2H2OMon.
6.AB.65SakhaiteCa12Mg4(BO3)7(CO3)4(OH)2ClIso. m3m (4/m 3 2/m) : Fd3m
6.AB.70HarkeriteCa12Mg4Al(BO3)3(SiO4)4(CO3)5 · H2OTrig. 3m (3 2/m) : R3m
6.AB.75Pertsevite-(F)Mg2(BO3)(F,OH)Orth. mm2 : Pna21
6.AB.75Pertsevite-(OH)Mg2(BO3)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
6.AB.80JacquesdietrichiteCu2(H2BO3)(OH)3Orth. mmm (2/m 2/m 2/m) : Pmna

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

10.1.1TeepleiteNa2[B(OH)4]ClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
10.1.2BandyliteCu[B(OH)4]ClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
10.1.3BerboriteBe2(BO3)(OH,F) · H2OTrig.
10.1.5BoraciteMg3(B7O13)ClOrth. mm2 : Pca21
10.1.7ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2OMon.
10.1.8/9/10HilgarditeCa2B5O9Cl · H2OTric. 1 : P1
10.1.12HydrochlorboriteCa4B8O15Cl2 · 21H2OMon.
10.1.13EkateriniteCa2(B4O7)(Cl,OH)2 · 2H2OHex.
10.1.14VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2OTric. 1 : P1
10.1.15ChelkariteCaMgB2O4(Cl,OH)2 · 5H2O Or near, with Cl:OH = 3:1Orth.
10.1.16JohachidoliteCaAlB3O7Orth. mmm (2/m 2/m 2/m) : Cmma
10.1.17SatimoliteKNa2Al4[Cl|B2O5]3 · 13H2OOrth.
10.1.18ChambersiteMn2+3(B7O13)ClOrth. mm2 : Pca21
10.1.19Congolite(Fe2+,Mg)3(B7O13)ClTrig. 3m : R3c

Fluorescence of FluoboriteHide

White (SW UV)(Franklin Marble, NJ & NY, USA).

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 FluoboriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Geijer (1926) Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 48: 84.
Geijer (1927) Sver. Geol. Undersök, Ser. C, no. 343, Yearbook 20, no. 4: 26.
American Mineralogist (1927): 12: 266.
Bauer and Berman (1929) American Mineralogist: 14: 165.
Scherillo A. (1938) - Ricerche sulla struttura cristallina della nocerite(=Fluoborite). Periodico di Mineralogia – Roma pp. 229- 248.
Watanabe (1939) Mineralogische und petrographische Mitteilungen, Vienna: 50: 441.
Johnston and Tilley (1940) Geological Magazne (Monthly Journal of Geology): 77: 141.
Schaller (1942) American Mineralogist: 27: 467.
Takéuchi (1950) Acta Crystallographica: 3: 208-210.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 369-370.
Flamini A. (1966) - Sulla composizione chimica della nocerite. Periodico di Mineralogia – Roma pp. 205-222.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Rudnev, V.V., Chukanov, N.V., Nechelyustov, G.N., Yamnova, N.A. (2007): Hydroxylborite, Mg3(BO3)(OH)3, a new mineral, and the isomorphous fluoborite-hydroxylborite series. Proceedings of the Russian Mineralogical Society, 136(1), 69-82.

Internet Links for FluoboriteHide

Localities for FluoboriteHide

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.
  • Tasmania
    • Waratah-Wynyard municipality
      • Waratah district
        • Waratah
    • West Coast municipality
      • Zeehan district
        • Mt Heemskirk mineral field
Kwak, T.A.P., and Nicholson, M. (1988): Mineralogical Magazine 52, 713-716.
  • Ontario
    • Haliburton Co.
      • Cardiff Township
Sabina, A. P. (1982): Some rare minerals of the Bancroft area. Mineralogical Record 13, 223-228
    • Peterborough Co.
      • Galway Township
Ref.: Geological Survey of Canada Miscellaneous Survey 39.
  • Guangdong Province
    • Heyuan Prefecture
      • Lianping Co.
Wang, S. (1983): Bull. lnst. Min. Deposits, Chinese Acad. Geol. Sci. 9, 72; Daqiu Huang and Zhangqi Peng (1985), In: Collected Papers of the Yichang Institute of Geology and Mineral Resources, Geological Society of China Publications, Vol. 9
    • Qingyuan Prefecture
      • Yangshan Co.
Zhenhai Wang (2000): Guangdong Geology 15(2), 9-18
  • Hunan Province
    • Chenzhou Prefecture
      • Linwu Co.
        • Xianghualing Sn-polymetallic ore field
Aleksandrov, S.M. (1998): Geochemistry of skarn and ore formation in dolomites. VSP (Utrecht, Tokyo), 300 pp.
      • Yizhang Co.
        • Dongpo ore field
Gu Xiongfei, Ding Kuishou, and Xu Yingnian (1976): Geochimica 1976(2), 107.
    • Hengyang Prefecture
      • Changning Co.
        • Dayishan Sn-polymetallic ore field
Rongwen Zhou and Zhishun Chen (1991): Geology and Prospecting 27(3), 29-31
Yang Guangming, Peng Zhizhong, and Pan Zhaolu (1985): Acta Mineralogica Sinica 5(2), 97-101; Guangming Yang, Zhaolu Pan, and Zhizhong Peng (1987): Acta Petrologica et Mineralogica 6(3), 229-236
  • Yunnan Province
    • Baoshan Prefecture
      • Tengchong Co.
        • Tengchong Sn belt
          • Diantan
Feibao Wu and Zongyu Li (1986): Geology and Prospecting 22(8), 20-26
    • Honghe Autonomous Prefecture
      • Gejiu Co.
        • Gejiu Sn-polymetallic ore field
Chengdian Pen (1986): Mineral Deposits 5(3), 37-48
  • Occitanie
    • Pyrénées-Orientales
      • Prats-de-Mollo-la Preste (Prats de Molló-la Presta)
Goujou J-C., Guitard G., Berbain C. (2000), Le massif de Costabonne, 2464 m (Pyrénées-Orientales), Le Règne Minéral, n°32, pp: 5-12
  • Saxony
    • Erzgebirge
      • Schwarzenberg District
        • Pöhla
EDX-Analysis performed by Andreas Massanek/TU Freiberg.
  • Campania
    • Naples Province
      • Somma-Vesuvius Complex
        • Monte Somma
          • Ercolano
            • San Vito
P.M. Kartashov data; Russo, M. & Punzo, I. (2004): I minerali del Somma-Vesuvio. AMI Associazione Micro-mineralogica Italiana, Ed., Cremona, 317 pp.
    • Phlegrean Volcanic Complex
      • Naples Province
        • Phlegrean Fields
Dondi M., Pirazzini D., Puggioli G. (1990): I borati in Italia. Riv. Mineral. Ital., 14, 1, 1-19.
Dondi M., Pirazzini D., Puggioli G. (1990): I borati in Italia. Riv. Mineral. Ital., 14, 1, 1-19.
      • Salerno Province
        • Nocera Inferiore
Scacchi, A. (1881): Notizie preliminari intorno ai proietti vulcanici di Nocera e Sarno. Atti della R. Accademia dei Lincei, serie 3, Transunti, 5 (1880-81), 270-273; Scacchi, A. (1885): La regione vulcanica fluorifera della Campania. Atti della R. Accademia delle Scienze fisiche e matematiche di Napoli, serie 2, 2 (1888), 108 pp.; Scacchi, A. (1890): La regione vulcanica fluorifera della Campania. Memorie del R. Comitato Geologico Italiano, 4, 1-52; Zambonini, F. (1919): Il tufo piperinoide della Campania e i suoi minerali. Memorie per servire alla descrizione della Carta geologica d'Italia, 7, 2, 130 pp.; Brisi, C., Eitel, W. (1957): Identity of nocerite and fluoborite. American Mineralogist, 42, 288-293; Flamini, A. (1966): Sulla composizione chimica della nocerite. Periodico di Mineralogia, 35, 205-222; Aleksandrov, S.M. [Александров, С.М.] (1974): Geochemical peculiarities of the occurrences of endogenic borate mineralisation in Italy [Геохимические особенности проявления эндогенной боратной минерализации в Италии]. Geokhimiya, 10, 1440-1449 (in Russian); Carati, M. (1988): I minerali degli inclusi metamorfosati nel Tufo Grigio Campano. Notiziario del Gruppo Mineralogico Geologico Napoletano, 18, 5-12; Cámara, F., Ottolini, L. (2000): New data on the crystal-chemistry of fluoborite by means of SREF, SIMS, and EMP analysis. American Mineralogist, 85, 103-108; Lacalamita, M., Balassone, G., Schingaro, E., Mesto, E., Mormone, A., Piochi, M., Ventruti, G., Joachimski, M., (2016): Fluorophlogopite-bearing and carbonate 1 metamorphosed xenoliths from the Campanian Ignimbrite (Fiano, southern Italy): crystal chemical, geochemical and volcanological insights. Mineralogical Magazine, Prepublication,;jsessionid=2etf74elfv6x4.x-ic-live-02
  • Latium
    • Rome Province
Caponera I., Fiori S., Pucci R., 2003. Fluoborite, piombo nativo, richterite ed altri interessanti ritrovamenti nei Colli Albani. Il Cercapietre, 1-2.
luigi mattei
Caponera, I., Fiori S., Pucci R. (2003): Fluoborite, piombo nativo, richterite ed altri interessanti ritrovamenti nei Colli Albani. Il Cercapietre, 1-2, 3-13.
  • Perak
    • Selibin
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 370.
  • Chihuahua
    • Mun. de Aquiles Serdán
      • Santa Eulalia District
        • East Camp
Panczner (1987): 77-395.
North Korea
  • North Hwanghae Province
    • Suan-gun
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 323, 370, 376.
  • Bihor Co.
    • Nucet
Ş. Marincea: "Suanite in two boron-bearing magnesian skarns from Romania: data on a longtime ignored mineral species", Neues Jahrbuch für Mineralogie - Abhandlungen 182:183-192 (2006)
Shimizu, M., Kato, A., Cioflica, G., Lupulescu, M., Shimizu, M. (1998): Friedrichite from Băița Bihor, Romania. Canadian Mineralogist 36, 861-868.
Ş. Marincea: "Suanite in two boron-bearing magnesian skarns from Romania: data on a longtime ignored mineral species", Neues Jahrbuch für Mineralogie - Abhandlungen 182:183-192 (2006)
  • Eastern-Siberian Region
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
        • Lower Tunguska
          • Nepa River basin
[AmMin 84:686]
        • Zheleznogorsk (Korshunikha)
Mazurov, M.P., Grishina, S.N., Istomin, V.E., and Titov, A.T. (2007): Geology of Ore Deposits 49(4), 271-284.
    • Sakha Republic (Saha Republic; Yakutia)
[World of Stones 12:49]
      • Polar Yakutia
        • Dogdo River Basin
          • Tas-Khayakhtakh Range
Seltmann, R., Soloviev, S., Shatov, V., Pirajno, F., Naumov, E., & Cherkasov, S. (2010). Metallogeny of Siberia: tectonic, geologic and metallogenic settings of selected significant deposits*. Australian Journal of Earth Sciences, 57(6), 655-706
      • Verkhoyansk
        • Yana River Basin
          • Dogdo river
Chukanov, N.V. (2014): Infrared spectra of mineral species: Extended library. Springer (Springer Geochemistry/Mineralogy), vol. 1, Dordrecht, 1726 pp.
    • Transbaikalia (Zabaykalye)
      • Buriatia Republic (Buryatia)
        • Vitim Plateau
American Mineralogist, Volume 87, pages 1509–1513, 2002
  • Far-Eastern Region
    • Kamchatka Oblast'
      • Tolbachik volcano
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
            • Second scoria cone
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Chukanov, N.V., Lykova, I.S., Savelyev, D.P., Sidorov, E.G., Pushcharovsky, D.Yu. (2014): Wulffite, K3NaCu4O2(SO4)4, and parawulffite, K5Na3Cu8O4(SO4)8, two new minerals from fumarole sublimates of the Tolbachik Volcano, Kamchatka, Russia. Canadian Mineralogist, 52, 699-716.
  • Northern Region
    • Karelia Republic
      • Ladoga Region
Ivashchenko, V. I., Valkama, M., Sundblad, K., Golubev, A. I., & Alekseev, V. Y. (2011, September). New data on mineralogy and metallogeny of scarns in the Pitkyaranta ore region. In Doklady Earth Sciences (Vol. 440, No. 1, pp. 1307-1311). SP MAIK Nauka/Interperiodica; Aleksandrov, S. M., & Troneva, M. A. (2009). Composition and genesis of endogenous borates from the Pitkáranta ore field, Karelia. Geochemistry International, 47(9), 914-929.; Ivashchenko, V. I., & Lavrov, О. В. (2006) Ore Deposits and Occurrences in the North Ladoga Region, Southwest Karelia. in Ore Deposits And Occurrences In The North Ladoga Region, Southwest Karelia Field Trip Guidebook. Understanding the genesis of ore deposits to meet the demands of the 21st century 12th Quadrennial IAGOD Symposium 2006. Moscow. P.41-64.
Malinko S.V. e.a. (1991) Minerals of boron, - Moscow, Nedra, p. 135 (in Russian)
South Africa
  • Limpopo Province
    • Phalaborwa
      • Loolekop
Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa: 206.; Braithwaite, R. S. W., Dunn, P. J., Pritchard, R. G., & Parr, W. H. (1994). Iowaite, a reinvestigation. Mineralogical Magazine, 58(390), 77-86.; Gliddon, J. (1996) Minerals of the Palabora open pit. British Micromount Society 43:2-7
  • Dalarna
    • Hedemora
  • Värmland
    • Filipstad
Knut Edvard Larsen collection # 3929 (visually identified, ex- H. Fylling collection))
  • Västmanland
    • Norberg
      • Kallmora
Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm, 48, 84-85; Mineralogical Record (1975): 6: 174; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 369.
  • Scotland
    • North West Highlands
      • Isle of Skye
        • Broadford
          • Kilchrist
          • Torrin
A. Livingstone: Minerals of Scotland, NMS Publications (2002)
  • Alaska
    • Nome Borough
      • Seward Peninsula
Aleksandrov, S.M. (2007): Endogeneous transformation of kotoite in calciphyres at magnesian-skarn deposits of boron. Geochem. Internat., 45, 666-684.
  • California
    • Fresno Co.
      • Lakeshore
Canadian Minelalogist Vol.26, pp. 911-916 (1988)
    • Riverside Co.
      • Crestmore
        • Crestmore quarries
          • Sky Blue Hill
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 186; Segnit, Ralph E. & C.J. Lancucki (1963), Fluoborite from Crestmore, California: American Mineralogist: 48: 278-282; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 237.
    • San Bernardino Co.
      • Bristol Mts
        • Amboy area
Chesterman, C.W. & O.E. Bowen, Jr. (1958), Fluoborite from San Bernardino County, California (abstract): Geological Society of America Bulletin: 69: 1678-1679; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 186, 379.; Flamini, A. (1968) La fluoborite di Hope, San Bernardino County, California. Periodico di Mineralgia: 37: 129; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 516.; Otton, James K.; Glanzman, Richard K.; Brenner-Tourtelot, Elizabeth F. (1980) Uranium, rare-earth and thorium mineralization at the Hope Mine, eastern Bristol Mountains, San Bernardino County, California. USGS Open file report 80-821.
No reference listed
  • Nevada
    • Lincoln Co.
      • Bristol and Jackrabbit Districts
NBMG Spec. Pub. 31 Minerals of Nevada
Gillson, J. L. and Shannon, Earl V. (1925) Am. Min., v. 10, p. 137. Geijer, Per (1926) Norbergite and Fluoborite, GFF, v. 28 (1), p. Rocks & Minerals, Nov. 1999
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
          • Franklin Marble
Betancourt, P.P. (The Picking Table, Vol. 27(2):2-10; Dunn(1995):Pt5:641.
        • Ogdensburg
          • Sterling Hill
Modris Baum
Palache, C. (1935): 128; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 369; Dunn, Pete J. (1995): Franklin and Sterling Hill New Jersey: the world’s most magnificent mineral deposits, part: 5: 641.
      • Hardyston Township
        • Rudeville
Common knowledge among local collectors.
      • Sparta Township
        • Franklin Marble
  • New York
    • Orange Co.
      • Town of Warwick
        • Amity
George Robinson & Steven Chamberlain (2007) Gazetteer of major New York State mineral localities. Rocks & Minerals, 82, #6, 472-483.
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