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Bertossaite

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About BertossaiteHide

Formula:
(Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4
Colour:
Pale pink
Lustre:
Vitreous
Hardness:
6
Crystal System:
Orthorhombic
Name:
Named in honor of Antonio Bertossa, past director of the Geological Survey of Rwanda, the country in which it was first found. It was first recognized as an unnamed phase by von Knorring (1965) and described by von Knorring & Mrose (1966).
Bertossaite-Palermoite Series. The calcium analogue of Palermoite. May be confused with amblygonite which has a more pronounced cleavage. Masses of bertossaite up to 50 kg are known from the type locality, the Buranga pegmatite, Rwanda.


Classification of BertossaiteHide

Approved
Approval Year:
1965
First Published:
1965
8.BH.25

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
41.7.1.2

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)7(XO4)4Zq
19.8.5

19 : Phosphates
8 : Phosphates of Al and other metals

Physical Properties of BertossaiteHide

Vitreous
Colour:
Pale pink
Hardness:
Cleavage:
Distinct/Good
(100)
Fracture:
Irregular/Uneven

Optical Data of BertossaiteHide

Type:
Biaxial (-)
RI values:
nα = 1.624 nβ = 1.636 nγ = 1.642
Max Birefringence:
δ = 0.018
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
weak

Chemical Properties of BertossaiteHide

Formula:
(Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4
IMA Formula:
Li2CaAl4(PO4)4(OH)4
Common Impurities:
Fe,Mn

Chemical AnalysisHide

Oxide wt%:
 1
P2O545,24 %
Al2O333,42 %
FeO0,98 %
MnO0,76 %
CaO8,36 %
Na2O0,34 %
Li2O4,21 %
H2O+5,36 %
H2O-0,07 %
F1,68 %
Insol0,27 %
Total:96 %
Sample references:
IDLocalityReference
1Buranga pegmatite, Gatumba District, Western Province, Rwandavon Knorring, O. (1965) Notes on some pegmatite minerals from Rwanda. Bulletin du Service Géologique de la République du Rwanda: 2: 11-14.

Crystallography of BertossaiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 11.48 Å, b = 15.73 Å, c = 7.23 Å
Ratio:
a:b:c = 0.73 : 1 : 0.46
Unit Cell V:
1,305.60 ų (Calculated from Unit Cell)
Morphology:
Massive

Occurrences of BertossaiteHide

Paragenetic Mode(s):

Type Occurrence of BertossaiteHide

Synonyms of BertossaiteHide

Other Language Names for BertossaiteHide

German:Bertossait
Simplified Chinese:磷铝钙锂石
Spanish:Bertossaita

Relationship of Bertossaite to other SpeciesHide

Other Members of this group:
NatropalermoiteNa2SrAl4(PO4)4(OH)4Orth. mmm (2/m 2/m 2/m)
Palermoite(Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4Orth.
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Trolleite6 photos of Bertossaite associated with Trolleite on mindat.org.
Apatite1 photo of Bertossaite associated with Apatite on mindat.org.
Scorzalite1 photo of Bertossaite associated with Scorzalite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.BH.05ThadeuiteCa(Mg,Fe2+)3(PO4)2(OH,F)2Orth. 2 2 2 : C2 2 21
8.BH.10DurangiteNaAl(AsO4)FMon. 2/m : B2/b
8.BH.10IsokiteCaMg(PO4)FMon. 2/m : B2/b
8.BH.10LacroixiteNaAl(PO4)FMon. 2/m : B2/b
8.BH.10MaxwelliteNaFe3+(AsO4)FMon.
8.BH.10PanasqueiraiteCaMg(PO4)(OH,F)Mon.
8.BH.10TilasiteCaMg(AsO4)FMon. m : Bb
8.BH.15DrugmanitePb2(Fe3+,Al)(PO4)(PO3OH)(OH)2Mon. 2/m : P21/b
8.BH.20Bjarebyite(Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3Mon.
8.BH.20CirroliteCa3Al2(PO4)3(OH)3 (?)
8.BH.20KulaniteBa(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3Mon.
8.BH.20PenikisiteBa(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.20PerloffiteBa(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.20JohntomaiteBaFe2+2Fe3+2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.25Palermoite(Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4Orth.
8.BH.30CarminitePbFe3+2(AsO4)2(OH)2Orth. mmm (2/m 2/m 2/m) : Cccm
8.BH.30SewarditeCaFe3+2(AsO4)2(OH)2Orth. mmm (2/m 2/m 2/m) : Cccm
8.BH.35AdeliteCaMg(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35ArsendescloizitePbZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35AustiniteCaZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35CobaltaustiniteCaCo(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35ConichalciteCaCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35DuftitePbCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35GabrielsonitePbFe3+(As3+O3)OOrth. mm2 : Pmc21
8.BH.35NickelaustiniteCaNi(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35TangeiteCaCu(VO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35GottlobiteCaMg(VO4,AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35HermannroseiteCaCu(PO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.40ČechitePbFe2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m)
8.BH.40DescloizitePbZn(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.40MottramitePbCu(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.40PyrobelonitePbMn2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.45BayldonitePbCu3(AsO4)2(OH)2Mon. 2/m : B2/b
8.BH.45VésigniéiteBaCu3(VO4)2(OH)2Mon. 2/m : B2/m
8.BH.50PaganoiteNiBi(AsO4)OTric.
8.BH.55JagoweriteBaAl2(PO4)2(OH)2Tric.
8.BH.60Attakolite(Ca,Sr)Mn(Al,Fe)4(HPO4,PO4)3(SiO4,PO4)(OH)4Mon. 2/m : B2/m
8.BH.65LeningraditePbCu3(VO4)2ClOrth. mmm (2/m 2/m 2/m) : Ibam

Related Minerals - Dana Grouping (8th Ed.)Hide

41.7.1.1Palermoite(Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4Orth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.8.1MontebrasiteLiAl(PO4)(OH)Tric. 1 : P1
19.8.2BrazilianiteNaAl3(PO4)2(OH)4Mon. 2/m : P2/b
19.8.3WarditeNaAl3(PO4)2(OH)4 · 2H2OTet. 4 2 2 : P41 21 2
19.8.4TancoiteLiNa2Al(PO4)(HPO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pbca
19.8.6TinsleyiteKAl2(PO4)2(OH) · 2H2OMon.
19.8.7Taranakite(K,NH4)Al3(PO4)3(OH) · 9H2OTrig. 3m (3 2/m) : R3c
19.8.8FrancoanelliteK3Al5(PO4)2(HPO4)3 · 12H2OTrig.
19.8.9GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
19.8.10AldermaniteMg5Al12(PO4)8(OH)22 · 32H2OOrth.
19.8.11OveriteCaMgAl(PO4)2(OH) · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.8.12MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2OMon. 2 : B2
19.8.14FoggiteCaAl(PO4)(OH)2 · H2OOrth.
19.8.15GatumbaiteCaAl2(PO4)2(OH)2 · H2OMon. 2/m : P2/m
19.8.16CrandalliteCaAl3(PO4)(PO3OH)(OH)6Trig. 3m (3 2/m) : R3m
19.8.17Matulaite(Fe3+,Al)Al7(PO4)4(PO3OH)2(OH)8(H2O)8 · 8H2OMon.
19.8.19LehiiteCaAl3(PO4)(PO3OH)(OH)6
19.8.20Millisite(Na,K)CaAl6(PO4)4(OH)9 · 3H2OTet.
19.8.21EnglishiteK3Na2Ca10Al15(PO4)21(OH)7 · 26H2OMon. 2/m
19.8.22KleemaniteZnAl2(PO4)2(OH)2 · 3H2OMon.
19.8.23MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2OOrth.
19.8.24PaulkerriteK(Mg,Mn2+)2(Fe3+,Al,Ti,Mg)2Ti(PO4)4(OH)3 · 15H2OOrth. mmm (2/m 2/m 2/m) : Pbca

Fluorescence of BertossaiteHide

Other InformationHide

Notes:
Dissolves very slowly in HNO4
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 BertossaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
von Knorring, O. (1965) Notes on some pegmatite minerals from Rwanda. Bulletin du Service Géologique de la République du Rwanda: 2: 11-14 [as an unnamed phase].
Von Knorring, O. and Mrose, M.E. (1966) Bertossaite (Li,Na)2(Ca,Fe,Mn)Al4 (PO4)(OH,F)4, a new mineral from Rwanda (Africa). (Abstr.) Canadian Mineralogist: 8: 668.
Fleischer, M. (1967) New Mineral Names. American Mineralogist: 52: 1583. (Abstr.)
Povarennykh, A.S. (1972) Crystal Chemical Classification of Minerals (Plenum, New York, London), 2: 545p. (as Ca-palermoite).
Daltry, V.D.C. and von Knorring, O. (1998) Type-mineralogy of Rwanda with particular reference to the Buranga pegmatite. Geologica Belgica: 1: 9-15.

Internet Links for BertossaiteHide

Localities for BertossaiteHide

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.
Australia
 
  • Victoria
    • East Gippsland Shire
      • Omeo
Eagle, R. M., Birch, W. D., & McKnight, S. (2015). Phosphate minerals in granitic pegmatites from the Mount Wills District, north-eastern Victoria. Proceedings of the Royal Society of Victoria, 127(2), 55-68.
          • Glen Wills
Eagle, R. M., Birch, W. D., & McKnight, S. (2015). Phosphate minerals in granitic pegmatites from the Mount Wills District, north-eastern Victoria. Proceedings of the Royal Society of Victoria, 127(2), 55-68.
Museum Victoria Natural Sciences Collection
China
 
  • Fujian Province
    • Nanping Prefecture
      • Yanping District
Yunxiang Ni, Yueqing Yang, and Yaping Zhang (1990): Acta Mineralogica Sinica 10(1), 85-90; Huan Hu, Rucheng Wang, Fontan, F., Aicheng Zhang, and Jiadeng Chen (2007): Presented at the International Symposium: Granitic Pegmatites: The State of the Art, May 06–12, 2007, Porto, Portugal
Rao, C., Wang, R. C., Hatert, F., & Baijot, M. (2014). Hydrothermal transformations of triphylite from the Nanping No. 31 pegmatite dyke, southeastern China. European Journal of Mineralogy, 26(1), 179-188.; Rao, C., Wang, R., Yang, Y., Hatert, F., Xia, Q., Yue, X., & Wang, W. (2017). Insights into post-magmatic metasomatism and Li circulation in granitic systems from phosphate minerals of the Nanping No. 31 pegmatite (SE China). Ore Geology Reviews, 91, 864-876.
Rwanda (TL)
 
  • Western Province
    • Gatumba District
von Knorring, O. (1965) Notes on some pegmatite minerals from Rwanda. Bulletin du Service Géologique de la République du Rwanda: 2: 11-14.; von Knorring, O. and Mrose, M.E. (1966) Bertossaite (Li,Na)2(Ca,Fe,Mn)Al4 (PO4)(OH,F)4, a new mineral from Rwanda (Africa). (Abstr.) Canadian Mineralogist: 8: 668.; Daltry, V.D.C. and von Knorring, O. (1998) Type-mineralogy of Rwanda with particular reference to the Buranga pegmatite. Geologica Belgica: 1: 9-15.
F. Hatert, P. Lefèvre, A.M. Fransolet, M.R. Spirlet, F. Fontan, P. Keller : "Ferrorosemaryite, []NaFe2+Fe3+Al(PO4)3, a new phosphate mineral from the Rubindi pegmatite, Rwanda", Bull. Liaison S.F.M.C., Vol. 16, 2004, pp 44-45.; Lefèvre, P., Fransolet, A. M., Fontan, F., & Keller, P. Petrographic study of the Al-rich phosphate mineral associations of the Rubindi-Kabilizi pegmatite, Gatumba area, Rwanda.
Uganda
Daltry, V.D.C. and von Knorring, O. (1998) Type-mineralogy of Rwanda with particular reference to the Buranga pegmatite. Geologica Belgica: 1: 9-15.
Mineral and/or Locality  
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