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Arrojadite Group

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Big Photo

Dickinsonite-(KMnNa)
Fillow Quarry (Branchville Quarry; Branchville Mica Mine), Branchville, Redding, Fairfield Co., Connecticut, USA
© Van King

Show Arrojadite Group Photos (13)



Formula:
A
 
2
 E
 
2
CaNa
 
2+x
M
 
13
R (HPO
 
4
)
 
1-x
(PO
 
4
)
 
11
W
 
2


A group of basic phosphate minerals with the general formula indicated above, where:

A denotes a large divalent cation (Ba, Sr, Pb) plus a vacancy, or two monovalent cations (K, Na),
E denotes a small divalent cation (Fe, Mn, Mg) plus a vacancy, or two Na cations,
M is a small divalent cation (Fe, Mn, Mg), whose identity defines the root-name: Fe, arrojadite, or Mn, dickinsonite,
R is a small trivalent cation (Al, Fe) and
W is a hydroxide or fluoride ion.


Classification of Arrojadite Group

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Chemical Properties of Arrojadite Group

Formula:
A
 
2
 E
 
2
CaNa
 
2+x
M
 
13
R (HPO
 
4
)
 
1-x
(PO
 
4
)
 
11
W
 
2

Relationship of Arrojadite Group to other Species

Group Members:
Arrojadite-(BaFe)
{Ba◻}{Fe
2+
 
◻}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)(OH)
 
2
Arrojadite-(BaNa)
{Ba◻}{Na
 
2
}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)(OH)
 
2
Arrojadite-(KFe)
{KNa}{Fe
2+
 
◻}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)(OH)
 
2
Arrojadite-(KFeNa)
{KNa}{Fe
2+
 
◻}{Ca}{Na
 
3
}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)(OH)
 
2
Arrojadite-(KNa)
{KNa}{Na
 
2
}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)(OH)
 
2
Arrojadite-(NaFe)
{Na
 
2
}{Fe
2+
 
◻}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)(OH)
 
2
Arrojadite-(PbFe)
{Pb◻}{Fe
2+
 
◻}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)(OH)
 
2
Arrojadite-(SrFe)
{Sr◻}{Fe
2+
 
◻}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)(OH)
 
2
Dickinsonite-(KMnNa)
{KNa}{Mn
2+
 
◻}{Ca}{Na
 
3
}{Mn
2+
13
}{Al}(PO
 
4
)
 
12
(OH)
 
2
Ferri-arrojadite-(BaNa)
{Ba◻}{Na
 
2
}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Fe
3+
 
}(PO
 
4
)
 
11
(HPO
 
4
)(OH)
 
2
Fluorarrojadite-(BaFe)
{Ba◻}{Fe
2+
 
◻}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)F
 
2
Fluorarrojadite-(KNa)
{KNa}{Na
 
2
}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)F
 
2
Fluorarrojadite-(NaFe)
{Na
 
2
}{Fe
2+
 
◻}{Ca}{Na
 
2
◻}{Fe
2+
13
}{Al}(PO
 
4
)
 
11
(HPO
 
4
)F
 
2

Other Information

Health Warning: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 Group

Reference List:

- +
Cámara, F., Oberti, R., Chopin, C., 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., Cámara, F. (2006): The arrojadite enigma: II. Compositional space, new members and nomenclature of the group. American Mineralogist, 91, 1260-1270.

Internet Links for Arrojadite Group

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    • Localities for Arrojadite Group

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? 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.
    Argentina
     
    • Salta
      • Nevados de Palermo
    		[Arrojadite-(KFe)] Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina)
    [Arrojadite-(KFe)]
    Australia
     
    • South Australia
      • Olary Province
        • Kalabity homestead area
    		[Dickinsonite-(KMnNa)] Record of Sth.Aust. mines summary Olary SI5402 card 235
    [Dickinsonite-(KMnNa)]
    Austria
     
    • Styria
      • Fischbacher Alpen
        • Fischbach
    		Bernhard, F. (1996)
    Brazil
     
    • Minas Gerais
      • Doce valley
        • Conselheiro Pena
    		[Arrojadite-(KFe)] Canadian Mlneralogist Vol. 20, pp. 87-89 (1982)
        • Galiléia
          • Laranjeiras
    		[Arrojadite-(KFe)] [MinRec 12:70]
          • Sapucaia do Norte
    		[Arrojadite-(KFe)] Mineralogical Record: 30: 347.
    • Paraíba
      • Borborema mineral province
        • Pedra Lavrada
    		[Arrojadite-(KFe)] Am Min (1955) 40:55-63
    [Arrojadite-(KFe)] 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: 680; Rocks & Minerals (Jan.2000).
    Canada
     
    • Yukon Territory
      • Dawson Mining District
    		[Arrojadite-(KFe)] [MinRec 23:14-15]
    [Arrojadite-(KFe)] [MinRec 23:14-15]
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Plzeň Region
        • Domažlice (Taus)
          • Otov
    		[Arrojadite-(KFe)] Masau, M., Staněk, J., Černý, P., Chapman, R. (2000). Metasomatic wolfeite and associated phosphates from the Otov I granitic pegmatite, western Bohemia. J. Czech Geol. Soc. 45, 159-173.
    Finland
     
    • Southwestern Finland Region
      • Kemiö (Kimito) Island
    		[Arrojadite-(KFe)] GFF (1899) 21, 639-640
    France
     
    • Limousin
      • Haute-Vienne
        • Razès
          • Chanteloube
            • Vilatte Quarries (La Vilate)
    		[Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 4, 2000
    Germany
     
    • Bavaria
      • Lower Bavaria
        • Bavarian Forest
          • Zwiesel
            • Rabenstein
    		[Arrojadite-(KFe)] Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
      • Upper Palatinate
        • Oberpfälzer Wald
          • Vohenstrauß
            • Waidhaus
              • Hagendorf
    		[Arrojadite-(KFe)] http://www.berthold-weber.de/h_miner.htm
    • Saxony
      • Erzgebirge
        • Ehrenfriedersdorf
    		[Arrojadite-(KFe)] Thomas, R., and Webster, J.D. (2000): Mineralium Deposita 35, 570-582.
    Italy
     
    • Lombardy
      • Lecco Province
        • Colico
    		[Arrojadite-(KNa)] Vignola, P., Fransolet, A.M., Guastoni, A. & Appiani, R. (2011). Le pegmatiti di Piona. Recenti studi sui filoni Malpensata, Luna e Sommafiume. Rivista Mineralogica Italiana, 1/2011, 30-38
        • Vestreno
    		[Arrojadite-(KNa)] • Vignola, P., Fransolet, A.M., Guastoni, A. & Appiani, R. (2011). Le pegmatiti di Piona. Recenti studi sui filoni Malpensata, Luna e Sommafiume. Rivista Mineralogica Italiana, 1/2011, 30-38.
      • Sondrio Province
        • Spluga Valley
          • Madesimo
            • San Giacomo Valley
    		[Arrojadite-(BaFe)] 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.
    Japan
     
    • Honshu Island
      • Kanto Region
        • Ibaraki Prefecture
          • Kasumigaura City
            • Chiyoda-machi
    		[Arrojadite-(KFe)] The Mineral Species of Japan (5th ed) Matsubara
    Morocco
     
    • Marrakech-Tensift-El Haouz Region
      • Marrakech Prefecture
    		[Fluorarrojadite-(BaFe)] IMA website
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
    		[Arrojadite-(KFe)] Pavel M. Kartashov analytical data
    Namibia
     
    • Erongo Region
      • Karibib District
        • Okatjimukuju Farm 55 (Friedrichsfelde Farm)
    		[Arrojadite-(KFe)] P. Keller and O. von Knorring, Eur. J. Mineral. , 1989, 1, pp. 567-593.
        • Okongava-Ost Farm 72
    		[Dickinsonite-(KMnNa)] P. Keller et al., NJMA 183, 197-201 (2007)
    Portugal
     
    • Viseu District
    		[Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
    Rwanda
     
    • Western Province
      • Gatumba District
    		[Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
    Spain
     
    • Catalonia
      • Girona (Gerona)
        • Alt Empordà
          • Cadaqués
    		[Arrojadite-(KFe)] Bareche, E. (2005) "Els minerals de Catalunya. Segle XX" Ed. Museu Mollfulleda de Mineralogia - Grup Mineralògic Català, 269 p.
    Sweden
     
    • Södermanland
    		[Arrojadite-(KFe)] Gustafsson, Lars & Otter, Bertil (1991): Mineralförekomster i Stockholmstrakten.Del 2. STEIN 18(4),4-12
    • Uppland
      • Sigtuna
        • Arlanda
    		[Arrojadite-(KFe)] No reference listed
    • Värmland
      • Torsby
    		[Arrojadite-(SrFe)] American Mineralogist (2006) 91 (8-9), 1260-1270, IMA website
    UK
     
    [Arrojadite-(KFe)] Tindle, A.G. (2008) Minerals of Britian and Ireland
      • Buchan Grampian (Aberdeenshire)
        • Strathdon
    		[Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
    USA
     
    • Arizona
      • Yavapai Co.
    		[Dickinsonite-(KMnNa)] AmMin 67: 97-113 (1982)
    • Connecticut
      • Fairfield Co.
    		[Dickinsonite-(KMnNa)] Januzzi (1976) Mineral Localities of Connecticut & Southeastern New York State, p.278
        • Redding
          • Branchville
    		[Dickinsonite-(KMnNa)] Brush and Dana (1878); American Mineralogist (1946): 31: 329-345; 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: 671, 718, 855.; Rocks & Minerals (1995) 70:396-409
      • Middlesex Co.
        • East Hampton
    		[Arrojadite-(KFe)] Januzzi (1976) p.234-5.
        • Portland
          • Collins Hill
            • Strickland pegmatite
    		[Dickinsonite-(KMnNa)] 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: 702, 718; Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press); Rocks & Minerals (1955) 30:351-358
    • Maine
      • Androscoggin Co.
        • Auburn
          • East Mount Apatite District
    		[Dickinsonite-(KMnNa)] No reference listed
    [Dickinsonite-(KMnNa)] "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998
          • West Mount Apatite District
    		[Dickinsonite-(KMnNa)] No reference listed
    [Dickinsonite-(KMnNa)] No reference listed
    [Dickinsonite-(KMnNa)] No reference listed
        • Poland
    		[Dickinsonite-(KMnNa)] King, V. T. and Foord, E. E., 1994, Mineralogy of Maine, Descriptive Mineralogy, volume 1, Maine Geological Survey, Augusta, Maine, USA, pp. 418 + 88 plates.
      • Oxford Co.
        • Greenwood
    		[Dickinsonite-(KMnNa)] "Maine Mineral Localities, 3rd Ed." by Thompson, W.B., et.al., 1998
          • Uncle Tom Mountain
    		[Dickinsonite-(KMnNa)] No reference listed
        • Hebron
    		[Dickinsonite-(KMnNa)] Van King
        • Newry
    		[Dickinsonite-(KMnNa)] King, V. T., 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, ... Maine, Mineral News, v. 22(6): p. 1-3.
        • Rumford
    		[Dickinsonite-(KMnNa)] Guidebook 1 to Mineral Collecting in the Maine Pegmatite Belt
    • New Hampshire
      • Cheshire Co.
        • Alstead
    		[Dickinsonite-(KMnNa)] Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
      • Grafton Co.
        • Alexandria
    		[Dickinsonite-(KMnNa)] Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
        • Groton
    		[Arrojadite-(KFe)] Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
    [Arrojadite-(KFe)] Mineralogical Record (1973) 4:103-130
    [Arrojadite-(KFe)] Mineralogical Record (1973) 4:103-130
    [Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index; Mineralogical Record (1973) 4:103-130
      • Sullivan Co.
        • Newport
    		[Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
    • North Carolina
      • Gaston Co.
        • Bessemer City
    		[Dickinsonite-(KMnNa)] No reference listed
    • South Dakota
      • Custer Co.
        • Custer District
          • Custer
    		[Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
      • Pennington Co.
        • Keystone District
          • Glendale
    		[Arrojadite-(BaFe)] 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
          • Keystone
    		[Arrojadite-(KFe)] Rocks & Minerals: 67(6): 380-388.
    [Arrojadite-(KFe)] 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: 680, 687; Mineralogical Record: 17: 300.
    [Arrojadite-(KFe)] Handbook of Mineralogy
    Zimbabwe
     
    • Mashonaland West
      • Karoi (Urungwe; Hurungwe) District
    		[Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
        • Mwami
    		[Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
    [Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
    [Arrojadite-(KFe)] Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
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