Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery


This page is currently not sponsored. Click here to sponsor this page.
Colourless, violet or ...
Named in 1926 by Per Geijer allusion to its composition, containing both FLUOrine and BORon.
Isostructural with:

Classification of Fluoborite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"

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

1 : Monoborates

10 : Borates with other anions
1 : Borates with halide URL:
Please feel free to link to this page.

Type Occurrence of Fluoborite

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

Physical Properties of Fluoborite

Diaphaneity (Transparency):
Transparent, Translucent
Colourless, violet or white; colourless in transmitted light
Hardness (Mohs):
On [0001].

Crystallography of Fluoborite

Crystal System:
Cell Parameters:
a = 8.8Å, c = 3.1Å
a:c = 1 : 0.352
Unit Cell Volume:
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.

Optical Data of Fluoborite

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 Fluoborite

Essential elements:
All elements listed in formula:

Relationship of Fluoborite to other Species

Forms a series with Hydroxylborite (see here)
6.AB.10BerboriteBe2(BO3)(OH,F) · H2O
6.AB.55ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2O
6.AB.55WightmaniteMg5(BO3)O(OH)5 · 2H2O
6.AB.70HarkeriteCa12Mg4Al(BO3)3(SiO4)4(CO3)5 · H2O
10.1.3BerboriteBe2(BO3)(OH,F) · H2O
10.1.7ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2O
10.1.8/9/10HilgarditeCa2B5O9Cl · H2O
10.1.12HydrochlorboriteCa4B8O15Cl2 · 21H2O
10.1.13EkateriniteCa2(B4O7)(Cl,OH)2 · 2H2O
10.1.14VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
10.1.15ChelkariteCaMgB2O4(Cl,OH)2 · 5H2O Or near, with Cl:OH = 3:1
10.1.17SatimoliteKNa2Al4[Cl|B2O5]3 · 13H2O

Other Names for Fluoborite

Name in Other Languages:
Simplified Chinese:氟硼镁石
Traditional Chinese:氟硼鎂石

Other Information

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

Reference List:
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 Fluoborite

The following Fluoborite specimens are currently listed for sale on

Localities for Fluoborite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
  • Tasmania
    • Waratah district
      • Waratah
    • 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
  • Languedoc-Roussillon
    • 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
    • Phlegrean Volcanic Complex
      • Salerno Province
        • Nocera
          • Lavorate
Flamini, A. (1966): Sulla composizione chimica della nocerite. Periodico di Mineralogia, 35, 205-222
  • 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
  • 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)
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
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
    • 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.
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.
  • 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
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
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
  • 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.
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2015, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 4, 2015 22:09:38 Page generated: September 4, 2015 11:09:22