Berborite
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About Berborite
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 Berborite
Approved
Approval Year:
1967
5/G.06-10
6.AB.10
6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
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
26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
1 : Monoborates
10.1.3
10 : Borates with other anions
1 : Borates with halide
10 : Borates with other anions
1 : Borates with halide
Physical Properties of Berborite
Colour:
Colourless
Hardness:
3 on Mohs scale
Optical Data of Berborite
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.
and does not take into account mineral colouration.
Surface Relief:
Low
Chemical Properties of Berborite
Formula:
Be2(BO3)(OH,F) · H2O
IMA Formula:
Be2(BO3)(OH) · H2O
Crystallography of Berborite
Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
| Berborite-1T | Berborite-2H | Berborite-2T |
|---|---|---|
| Trigonal | Hexagonal | Trigonal |
| 3 - Pyramidal | 6 - Pyramidal | 3m - Ditrigonal Pyramidal |
| P3 | P63 | P3c1 |
| 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 : 1.203 | a:c = 1 : 2.4 | a: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 Berborite
Synonyms of Berborite
Other Language Names for Berborite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Nickel-Strunz Grouping
| 6.AB.05 | Hambergite | Be2(BO3)(OH) | Orth. mmm (2/m 2/m 2/m) : Pbca |
| 6.AB.15 | Jeremejevite | Al6(BO3)5(F,OH)3 | Hex. 6/m : P63/m |
| 6.AB.20 | Warwickite | (Mg,Ti,Fe,Cr,Al)2O(BO3) | Orth. |
| 6.AB.20 | Yuanfuliite | Mg(Fe3+,Al)O(BO3) | Orth. |
| 6.AB.25 | Karlite | Mg7(BO3)3(OH,Cl)5 | Orth. |
| 6.AB.30 | Azoproite | (Mg,Fe2+)2(Fe3+,Ti,Mg)(BO3)O2 | Orth. |
| 6.AB.30 | Bonaccordite | Ni2Fe3+(BO3)O2 | Orth. |
| 6.AB.30 | Fredrikssonite | Mg2(Mn3+,Fe3+)(BO3)O2 | Orth. |
| 6.AB.30 | Ludwigite | Mg2Fe3+(BO3)O2 | Orth. |
| 6.AB.30 | Vonsenite | Fe2+2Fe3+(BO3)O2 | Orth. |
| 6.AB.35 | Pinakiolite | (Mg,Mn2+)2Mn3+(BO3)O2 | Mon. |
| 6.AB.40 | Blatterite | Sb5+(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32 | Orth. mmm (2/m 2/m 2/m) : Pnnm |
| 6.AB.40 | Chestermanite | Mg2(Fe3+,Mn3+,Al,Sb3+)(BO3)O2 | Orth. |
| 6.AB.40 | Orthopinakiolite | (Mg,Mn2+)2Mn3+(BO3)O2 | Orth. |
| 6.AB.40 | Takéuchiite | (Mg,Mn2+)2(Mn3+,Fe3+)(BO3)O2 | Orth. |
| 6.AB.45 | Hulsite | (Fe2+,Mg)2(Fe3+,Sn)(BO3)O2 | Mon. |
| 6.AB.45 | Magnesiohulsite | (Mg,Fe2+)2(Fe3+,Sn,Mg)(BO3)O2 | Mon. |
| 6.AB.45 | Aluminomagnesiohulsite | (Mg,Fe2+)2(Al,Mg,Sn)(BO3)O2 | Mon. 2/m |
| 6.AB.50 | Fluoborite | Mg3(BO3)(F,OH)3 | Hex. |
| 6.AB.50 | Hydroxylborite | Mg3(BO3)(OH)3 | Hex. 6/m : P63/m |
| 6.AB.55 | Shabynite | Mg5(BO3)(OH)5(Cl,OH)2 · 4H2O | Mon. |
| 6.AB.55 | Wightmanite | Mg5(BO3)O(OH)5 · 2H2O | Mon. |
| 6.AB.60 | Gaudefroyite | Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3 | Hex. |
| 6.AB.65 | Sakhaite | Ca12Mg4(BO3)7(CO3)4(OH)2Cl | Iso. m3m (4/m 3 2/m) : Fd3m |
| 6.AB.70 | Harkerite | Ca12Mg4Al(BO3)3(SiO4)4(CO3)5 · H2O | Trig. 3m (3 2/m) : R3m |
| 6.AB.75 | Pertsevite-(F) | Mg2(BO3)(F,OH) | Orth. mm2 : Pna21 |
| 6.AB.75 | Pertsevite-(OH) | Mg2(BO3)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
| 6.AB.80 | Jacquesdietrichite | Cu2(H2BO3)(OH)3 | Orth. mmm (2/m 2/m 2/m) : Pmna |
| 6.AB.85 | Painite | CaZrAl9(BO3)O15 | Hex. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
| 10.1.1 | Teepleite | Na2[B(OH)4]Cl | Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm |
| 10.1.2 | Bandylite | Cu[B(OH)4]Cl | Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm |
| 10.1.4 | Fluoborite | Mg3(BO3)(F,OH)3 | Hex. |
| 10.1.5 | Boracite | Mg3(B7O13)Cl | Orth. mm2 : Pca21 |
| 10.1.6 | Karlite | Mg7(BO3)3(OH,Cl)5 | Orth. |
| 10.1.7 | Shabynite | Mg5(BO3)(OH)5(Cl,OH)2 · 4H2O | Mon. |
| 10.1.8/9/10 | Hilgardite | Ca2B5O9Cl · H2O | Tric. 1 : P1 |
| 10.1.11 | Solongoite | Ca2(H3B3O7)(OH)Cl | Mon. |
| 10.1.12 | Hydrochlorborite | Ca4B8O15Cl2 · 21H2O | Mon. |
| 10.1.13 | Ekaterinite | Ca2(B4O7)(Cl,OH)2 · 2H2O | Hex. |
| 10.1.14 | Volkovskite | KCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O | Tric. 1 : P1 |
| 10.1.15 | Chelkarite | CaMgB2O4(Cl,OH)2 · 5H2O Or near, with Cl:OH = 3:1 | Orth. |
| 10.1.16 | Johachidolite | CaAlB3O7 | Orth. mmm (2/m 2/m 2/m) : Cmma |
| 10.1.17 | Satimolite | KNa2(Al5Mg2)[B12O18(OH)12](OH)6Cl4·4H2O | Trig. 3m (3 2/m) : R3m |
| 10.1.18 | Chambersite | Mn2+3(B7O13)Cl | Orth. mm2 : Pca21 |
| 10.1.19 | Congolite | (Fe2+,Mg)3(B7O13)Cl | Trig. 3m : R3c |
| 10.1.20 | Ericaite | Fe2+3(B7O13)Cl | Orth. |
Other Information
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 Berborite
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 Berborite
mindat.org URL:
https://www.mindat.org/min-629.html
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Specimens:
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Localities for Berborite
ⓘ - 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.
- 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).
All localities listed without proper references should be considered as questionable.
Norway | |
| 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 |
| 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 | |
| Svein A. Berge collection |
| 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 | |
| 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) |
Saga 1 Quarry, Sagåsen, Mørje, Porsgrunn, Telemark, Norway