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Berborite

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About BerboriteHide

Formula:
Be2(BO3)(OH,F) · H2O
Colour:
Colourless
Hardness:
3
Crystal System:
Trigonal
Name:
For the chemical composition, a beryllium borate
Three polytypes are known: berborite-1T, -2T and -2H.


Classification of BerboriteHide

Approved
Approval Year:
1967
6.AB.10

6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
26.1.1.1

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
1 : Monoborates
10.1.3

10 : Borates with other anions
1 : Borates with halide

Physical Properties of BerboriteHide

Colour:
Colourless
Hardness:

Optical Data of BerboriteHide

Type:
Uniaxial (-)
RI values:
nω = 1.580 nε = 1.485
Max Birefringence:
δ = 0.095
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of BerboriteHide

Formula:
Be2(BO3)(OH,F) · H2O
IMA Formula:
Be2(BO3)(OH) · H2O

Crystallography of BerboriteHide

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Berborite-1TBerborite-2HBerborite-2T
   
Trigonal Hexagonal Trigonal 
3 - Pyramidal6 - Pyramidal3m - Ditrigonal Pyramidal
P3P63P3c1
   
a = 4.434(1) Å, c = 5.334(2) Å
a = 4.433(2) Å, c = 10.638(5) Å
a = 4.431(1) Å, c = 10.663(3) Å
a:c = 1 : 1.203a:c = 1 : 2.4a:c = 1 : 2.406
V 90.82 ų
(Calculated from Unit Cell)
V 181.04 ų
(Calculated from Unit Cell)
V 181.31 ų
(Calculated from Unit Cell)
   

Type Occurrence of BerboriteHide

Synonyms of BerboriteHide

Other Language Names for BerboriteHide

German:Berborit
Spanish:Berborita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Natrolite7 photos of Berborite associated with Natrolite on mindat.org.
Diopside1 photo of Berborite associated with Diopside on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

6.AB.05HambergiteBe2(BO3)(OH)Orth. mmm (2/m 2/m 2/m) : Pbca
6.AB.15JeremejeviteAl6(BO3)5(F,OH)3Hex. 6/m : P63/m
6.AB.20Warwickite(Mg,Ti,Fe,Cr,Al)2O(BO3)Orth.
6.AB.20YuanfuliiteMg(Fe3+,Al)O(BO3)Orth.
6.AB.25KarliteMg7(BO3)3(OH,Cl)5Orth.
6.AB.30Azoproite(Mg,Fe2+)2(Fe3+,Ti,Mg)(BO3)O2Orth.
6.AB.30BonaccorditeNi2Fe3+(BO3)O2Orth.
6.AB.30FredrikssoniteMg2(Mn3+,Fe3+)(BO3)O2Orth.
6.AB.30LudwigiteMg2Fe3+(BO3)O2Orth.
6.AB.30VonseniteFe2+2Fe3+(BO3)O2Orth.
6.AB.35Pinakiolite(Mg,Mn2+)2Mn3+(BO3)O2Mon.
6.AB.40BlatteriteSb5+(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32Orth. mmm (2/m 2/m 2/m) : Pnnm
6.AB.40ChestermaniteMg2(Fe3+,Mn3+,Al,Sb3+)(BO3)O2Orth.
6.AB.40Orthopinakiolite(Mg,Mn2+)2Mn3+(BO3)O2Orth.
6.AB.40Takéuchiite(Mg,Mn2+)2(Mn3+,Fe3+)(BO3)O2Orth.
6.AB.45Hulsite(Fe2+,Mg)2(Fe3+,Sn)(BO3)O2Mon.
6.AB.45Magnesiohulsite(Mg,Fe2+)2(Fe3+,Sn,Mg)(BO3)O2Mon.
6.AB.45Aluminomagnesiohulsite(Mg,Fe2+)2(Al,Mg,Sn)(BO3)O2Mon. 2/m
6.AB.50FluoboriteMg3(BO3)(F,OH)3Hex.
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.60GaudefroyiteCa4Mn3+2-3(BO3)3(CO3)(O,OH)3Hex.
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
6.AB.85PainiteCaZrAl9(BO3)O15Hex.

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
10.1.4FluoboriteMg3(BO3)(F,OH)3Hex.
10.1.5BoraciteMg3(B7O13)ClOrth. mm2 : Pca21
10.1.6KarliteMg7(BO3)3(OH,Cl)5Orth.
10.1.7ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2OMon.
10.1.8/9/10HilgarditeCa2B5O9Cl · H2OTric. 1 : P1
10.1.11SolongoiteCa2(H3B3O7)(OH)ClMon.
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
10.1.17SatimoliteKNa2(Al5Mg2)[B12O18(OH)12](OH)6Cl4·4H2OTrig. 3m (3 2/m) : R3m
10.1.18ChambersiteMn2+3(B7O13)ClOrth. mm2 : Pca21
10.1.19Congolite(Fe2+,Mg)3(B7O13)ClTrig. 3m : R3c
10.1.20EricaiteFe2+3(B7O13)ClOrth.

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 BerboriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Nefedov, E.I. (1967): Berborite, a new mineral. Doklady Akademii Nauk SSSR 174, 189-192.
Schlatti, M. (1967): Synthese und Strukturtyp des Berylliumborates Be2BO3(OH)H2O. Naturwissenschaften 54, 587-587.
American Mineralogist: 53: 348.
American Mineralogist: 76: 1734.
Giuseppetti, G., Mazzi, F., Tadini, C., Larsen, A.O., Åsheim, A., Raade, G. (1990): Berborite polytypes. Neues Jahrbuch für Mineralogie, Abhandlungen 162, 101-116.

Internet Links for BerboriteHide

Localities for BerboriteHide

ⓘ - 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.
Norway
 
  • Telemark
    • Porsgrunn
      • Langesundsfjorden
        • Siktesøya
Larsen, A.O. & Raade, G. (1991): Gaidonnayite from the nepheline syenite pegmatite on Siktesøya in the southern part of the Oslo Region, norway. Norsk Geologisk Tidsskrift. 71: 303-306
      • Mørje
        • Sagåsen
Giuseppetti et al (1990): Berborite polytypes. Neues Jahrbuch für Mineralogie-Abhandlungen 162 (1): 101-116
Giuseppetti et al (1991): Berborite polytypes. Neues Jahrbuch für Mineralogie-Abhandlungen 162 (1): 101-116
Larsen, A.O., Åsheim, A. and Gault, R. A. (2005): Minerals of the eudialyte group from the Sagåsen larvikite quarry, Porsgrunn, Norway. Norsk Bergverksmuseum Skrifter 30: 58-62
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
  • Vestfold
    • Larvik
      • Malerød
Svein A. Berge collection
      • Tvedalen
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
collected in 2014 by Jens Andreas Larsen
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
Collection of Alf Olav Larsen and Ingulv Burvald./ Nordrum, F. S. (2007): Nyfunn av mineraler i Norge 2006-2007. STEIN 34 (2), 14-26
Russia
 
  • 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.
DAN-SSSR,(1967) 174, 189-192; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Canadian Mineralogist Vol. 15, pp. 437-445 (1977)
Mineral and/or Locality  
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