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Arrojadite-(BaFe)

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About Arrojadite-(BaFe)Hide

Formula:
{Ba◻}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2
Crystal System:
Monoclinic
Name:
For Miguel Arrojado Lisbôa (1872 - 1932), Brazilian geologist and Redefinition after the new arrojadite nomenclature (CNMMN 05-D, October 2005)

Classification of Arrojadite-(BaFe)Hide

Approved
Approval Year:
1994
8.BF.05

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
F : With medium-sized and large cations, (OH, etc.):RO4< 0.5:1

Optical Data of Arrojadite-(BaFe)Hide

Type:
Biaxial (+/-)
Dispersion:
relatively strong

Chemical Properties of Arrojadite-(BaFe)Hide

Formula:
{Ba◻}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2
IMA Formula:
BaFe2+(CaNa2)Fe2+13Al(PO4)11(PO3OH)(OH)2

Chemical AnalysisHide

Oxide wt%:
 1
P2O539,34 %
Al2O31,96 %
Fe2O31,34 %
FeO19,36 %
MgO2,80 %
MnO19,45 %
CaO2,28 %
BaO5,36 %
Na2O4,97 %
K2O0,63 %
LiO0,20 %
H2O+1,45 %
H2O-0,10 %
F0,47 %
Total:93 %
Sample references:
IDLocalityReference
1Buranga pegmatite, Gatumba, Ngororero District, Western Province, Rwandavon Knorring, O. (1969) A note on the phosphate mineralisation at the Buranga pegmatite, Rwanda. Bulletin du Service Geologique de la Republique du Rwanda: 5: 42-45.

Crystallography of Arrojadite-(BaFe)Hide

Crystal System:
Monoclinic

Type Occurrence of Arrojadite-(BaFe)Hide

Synonyms of Arrojadite-(BaFe)Hide

Other Language Names for Arrojadite-(BaFe)Hide

Relationship of Arrojadite-(BaFe) to other SpeciesHide

Other Members of this group:
Arrojadite-(BaNa)BaNa3(NaCa)Fe2+13Al(PO4)11(PO3OH)(OH)Mon. 2/m : B2/b
Arrojadite-(KFe){KNa}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2Mon.
Arrojadite-(KFeNa){KNa}{Fe2+◻}{Ca}{Na3}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2
Arrojadite-(KNa){KNa}{Na2}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2Mon. m : Bb
Arrojadite-(NaFe){Na2}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2
Arrojadite-(PbFe){Pb◻}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2Mon. m : Bb
Arrojadite-(SrFe){Sr◻}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2Mon. m : Bb
Dickinsonite-(KMnNa){KNa}{Mn2+◻}{Ca}{Na3}{Mn2+13}{Al}(PO4)12(OH)2Mon. 2/m : B2/b
Ferri-arrojadite-(BaNa){Ba◻}{Na2}{Ca}{Na2◻}{Fe2+13}{Fe3+}(PO4)11(HPO4)(OH)2
Fluorarrojadite-(BaFe){Ba◻}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)F2Mon. m : Bb
Fluorarrojadite-(BaNa)BaNa4CaFe13Al(PO4)11(PO3OH)F2Mon. m : Bb
Fluorarrojadite-(KNa){KNa}{Na2}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)F2
Fluorarrojadite-(NaFe){Na2}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)F2
Fluorcarmoite-(BaNa)Ba□Na2Na2□CaMg13Al(PO4)11(PO3OH)F2Mon. m : Bb

Related Minerals - Nickel-Strunz GroupingHide

8.BF.05Arrojadite-(KFe){KNa}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2Mon.
8.BF.05Dickinsonite-(KMnNa){KNa}{Mn2+◻}{Ca}{Na3}{Mn2+13}{Al}(PO4)12(OH)2Mon. 2/m : B2/b
8.BF.05Arrojadite-(SrFe){Sr◻}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2Mon. m : Bb
8.BF.05Arrojadite-(KNa){KNa}{Na2}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2Mon. m : Bb
8.BF.05Arrojadite-(PbFe){Pb◻}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2Mon. m : Bb
8.BF.05Fluorarrojadite-(BaFe){Ba◻}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)F2Mon. m : Bb
8.BF.05Arrojadite-(NaFe){Na2}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2
8.BF.05Arrojadite-(BaNa)BaNa3(NaCa)Fe2+13Al(PO4)11(PO3OH)(OH)Mon. 2/m : B2/b
8.BF.05Fluorarrojadite-(KNa){KNa}{Na2}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)F2
8.BF.05Fluorarrojadite-(NaFe){Na2}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)F2
8.BF.10Samuelsonite(Ca,Ba)Ca8Fe2+2Mn2+2Al2(PO4)10(OH)2Mon. 2/m : B2/m
8.BF.15GriphiteNa4Li2Ca6(Mn2+,Fe2+,Mg)19Al8(PO4)24(F,OH)8Iso. m3 (2/m 3) : Pa3
8.BF.20NabiasiteBaMn2+9(VO4,AsO4)6(OH)2Iso. m3 (2/m 3) : Pa3

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 Arrojadite-(BaFe)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
von Knorring, O. (1969) A note on the phosphate mineralisation at the Buranga pegmatite, Rwanda. Bulletin du Service Géologique de la République du Rwanda: 5: 42-45. (as barian arrojadite).
Bertossa, A. (1969) Addendum à l'inventaire des minéraux du Rwanda. Bulletin du Service Géologique de la République du Rwanda: 5: 1-4. (as Ba-arrojadite).
Demartin, F., Gramaccioli, C.M., Pilati, T., and Sciesa, E. (1996) Sigismundite, (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(OH)2(PO4)12, a new Ba-rich member of the arrojadite group from Spluga Valley, Italy. Canadian Mineralogist: 34: 827-834.
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. (as Ba-arrojadite).
Cámara, F., Oberti, R., Chopin, C., and Medenbach, O. (2006) The arrojadite enigma: I. A new formula and a new model for the arrojadite structure. American Mineralogist: 91: 1249-1259.
Chopin, C., Oberti, R., and Cámara, F. (2006) The arrojadite enigma: II. Compositional space, new members and nomenclature of the group. American Mineralogist: 91: 1260-1270.
Della Ventura, G., Bellatreccia, F., Radica, F., Chopin, C., and Oberti, R. (2014) The arrojadite enigma III. The incorporation of volatiles: a polarised FTIR spectroscopy study. European Journal of Mineralogy: 26(5): 679-688.

Internet Links for Arrojadite-(BaFe)Hide

Localities for Arrojadite-(BaFe)Hide

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.
Canada
 
  • Yukon
    • Dawson mining district
Pavel Kartachov
Anatoly Kasatkin http://www.mindat.org/forum.php?read,7,181358,181518#msg-181518
Finland
 
  • South Ostrobothnia
    • Seinäjoki
      • Nurmo
Ilkka Mikkola collection, XRD+EPMA
Germany
 
  • Bavaria
    • Upper Palatinate
      • Neustadt an der Waldnaab
        • Waidhaus
          • Hagendorf
Mücke, A. & Keck, E. (2011): Karbonate aus dem Pegmatit von Hagendorf-Süd/Opf.: Zusammensetzung, Verbreitung und begleitende Phosphat-Mineralien (Apatit, Hagendorfit und Eosphorit-Gruppe) - darunter einige Neufunde (Triplit, Mineralien der Arrojadit-Dickinsonit Reihe, Goyazit und Variscit). Aufschluss 62, 87-117.
Italy (TL)
 
  • Lombardy
    • Sondrio Province
      • Madesimo
Demartin, F., Gramaccioli, C.M., Pilati, T., Sciesa, E. (1996): Sigismundite, (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(OH)2(PO4)12, a new Ba-rich member of the arrojadite group from Spluga Valley, Italy. Canadian Mineralogist, 34, 827-834.
Rwanda
 
  • Western Province
    • Ngororero District
      • Gatumba
von Knorring, O. (1969) A note on the phosphate mineralisation at the Buranga pegmatite, Rwanda. Bulletin du Service Geologique de la Republique du Rwanda: 5: 42-45.; 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.; Chopin, C., Oberti, R., Camara, F. (2006) The arrojadite enigma: II. Compositional space, new members, and nomenclature of the group. American Mineralogist: 91: 1260-1270.
USA
 
  • South Dakota
    • Pennington Co.
      • Keystone Mining District
        • Glendale
Loomis, T (2011), "News from the Black Hills, South Dakota", Mineral News, in press; Loomis, T (2011), "News from the Black Hills, South Dakota", Mineral News, in press
 
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