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Fluoborite

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Formula:
Mg3(BO3)(F,OH)3
System:
Hexagonal
Colour:
Colourless, violet or ...
Lustre:
Silky
Hardness:
Name:
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"
6.AB.50

6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
25.1.2.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
1 : Monoborates
10.1.4

10 : Borates with other anions
1 : Borates with halide
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Type Occurrence of Fluoborite

Year of Discovery:
1926
Geological Setting of Type Material:
Contact metasomatic magnetite deposit.
Associated Minerals at Type Locality:

Physical Properties of Fluoborite

Silky
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Colourless, violet or white; colourless in transmitted light
Streak:
White
Hardness (Mohs):
Cleavage:
Poor/Indistinct
On [0001].

Crystallography of Fluoborite

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

Optical Data of Fluoborite

Type:
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:
Low

Chemical Properties of Fluoborite

Formula:
Mg3(BO3)(F,OH)3
Essential elements:
All elements listed in formula:

Relationship of Fluoborite to other Species

Series:
Forms a series with Hydroxylborite (see here)
6.AB.05HambergiteBe2(BO3)(OH)
6.AB.10BerboriteBe2(BO3)(OH,F) · H2O
6.AB.15JeremejeviteAl6(BO3)5(F,OH)3
6.AB.20Warwickite(Mg,Fe2+)3Ti(BO3)2O2
6.AB.20YuanfuliiteMg(Fe3+,Fe2+,Al,Ti,Mg)(BO3)O
6.AB.25KarliteMg7(BO3)3(OH,Cl)5
6.AB.30Azoproite(Mg,Fe2+)2(Fe3+,Ti,Mg)(BO3)O2
6.AB.30BonaccorditeNi2Fe3+(BO3)O2
6.AB.30FredrikssoniteMg2(Mn3+,Fe3+)(BO3)O2
6.AB.30LudwigiteMg2Fe3+(BO3)O2
6.AB.30VonseniteFe22+Fe3+(BO3)O2
6.AB.35Pinakiolite(Mg,Mn2+)2Mn3+(BO3)O2
6.AB.40Blatterite(Mn2+,Mg)2(Mn3+,Sb3+,Fe3+)(BO3)O2
6.AB.40ChestermaniteMg2(Fe3+,Mn3+,Al,Sb3+)(BO3)O2
6.AB.40Orthopinakiolite(Mg,Mn2+)2Mn3+(BO3)O2
6.AB.40Takéuchiite(Mg,Mn2+)2(Mn3+,Fe3+)(BO3)O2
6.AB.45Hulsite(Fe2+,Mg)2(Fe3+,Sn)(BO3)O2
6.AB.45Magnesiohulsite(Mg,Fe2+)2(Fe3+,Sn,Mg)(BO3)O2
6.AB.45Aluminomagnesiohulsite(Mg,Fe2+)2(Al,Mg,Sn)(BO3)O2
6.AB.50HydroxylboriteMg3(BO3)(OH)3
6.AB.55ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2O
6.AB.55WightmaniteMg5(BO3)O(OH)5 · 2H2O
6.AB.60GaudefroyiteCa4Mn3+2-3(BO3)3(CO3)(O,OH)3
6.AB.65SakhaiteCa12Mg4(BO3)7(CO3)4(OH)2Cl
6.AB.70HarkeriteCa12Mg4Al(BO3)3(SiO4)4(CO3)5 · H2O
6.AB.75Pertsevite-(F)Mg2(BO3)(F,OH)
6.AB.75Pertsevite-(OH)Mg2(BO3)(OH)
6.AB.80JacquesdietrichiteCu2(H2BO3)(OH)3
6.AB.85PainiteCaZrAl9(BO3)O15
10.1.1TeepleiteNa2[B(OH)4]Cl
10.1.2BandyliteCu[B(OH)4]Cl
10.1.3BerboriteBe2(BO3)(OH,F) · H2O
10.1.5BoraciteMg3(B7O13)Cl
10.1.6KarliteMg7(BO3)3(OH,Cl)5
10.1.7ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2O
10.1.8/9/10HilgarditeCa2B5O9Cl · H2O
10.1.11SolongoiteCa2(H3B3O7)(OH)Cl
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
10.1.16JohachidoliteCaAlB3O7
10.1.17SatimoliteKNa2Al4[Cl|B2O5]3 · 13H2O
10.1.18ChambersiteMn32+(B7O13)Cl
10.1.19Congolite(Fe2+,Mg)3(B7O13)Cl
10.1.20EricaiteFe32+(B7O13)Cl

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

Specimens:
The following Fluoborite specimens are currently listed for sale on minfind.com.

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.
Australia
 
  • Tasmania
    • Waratah district
      • Waratah
Bottrill
    • Zeehan district
      • Mt Heemskirk mineral field
Kwak, T.A.P., and Nicholson, M. (1988): Mineralogical Magazine 52, 713-716.
Canada
 
  • 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.
China
 
  • 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
France
 
  • 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
Germany
 
  • Saxony
    • Erzgebirge
      • Schwarzenberg District
        • Pöhla
EDX-Analysis performed by Andreas Massanek/TU Freiberg.
Italy
 
  • 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
Malaysia
 
  • 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.
Mexico
 
  • 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.
Romania
 
  • 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)
Russia
 
  • 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.
Sweden
 
  • 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.
UK
 
  • Scotland
    • North West Highlands
      • Isle of Skye
        • Broadford
          • Kilchrist
          • Torrin
A. Livingstone: Minerals of Scotland, NMS Publications (2002)
USA
 
  • 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
Dunn(1995):Pt5:641
  • 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  
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