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Pyroaurite-2H

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About Pyroaurite-2HHide

Formula:
Mg6Fe3+2(OH)16(CO3) · 4H2O
Colour:
White, yellowish green, brownish green, yellowish white, brownish white
Lustre:
Vitreous, Waxy, Pearly
Hardness:
Specific Gravity:
2.08 - 2.14
Crystal System:
Hexagonal
Name:
Named for the structural relationship to pyroaurite. Originally named sjögrenite by Clifford Frondel in 1940 in honor of Stens Anders Hjalmar Sjögren (1856-1922), Professor of Mineralogy, University of Stockholm, Sweden.
A polytype of Pyroaurite

Originally named sjögrenite. Subsequently recognised as a polytype of pyroaurite and accordingly discredited as a species (Mills et al., 2012).




Classification of Pyroaurite-2HHide

5.DA.45

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
16b.6.1.3

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
6 : AmBn(XO3)pZqxH2O & with (m+n):p = 8:1
11.13.3

11 : Carbonates
13 : Carbonates of Fe

Physical Properties of Pyroaurite-2HHide

Vitreous, Waxy, Pearly
Transparency:
Transparent
Colour:
White, yellowish green, brownish green, yellowish white, brownish white
Hardness:
2½ on Mohs scale
Cleavage:
Perfect
{0001}
Density:
2.08 - 2.14 g/cm3 (Measured)    2.11 g/cm3 (Calculated)

Optical Data of Pyroaurite-2HHide

Type:
Uniaxial (-)
RI values:
nω = 1.573 nε = 1.550
Max Birefringence:
δ = 0.023
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of Pyroaurite-2HHide

Formula:
Mg6Fe3+2(OH)16(CO3) · 4H2O

Crystallography of Pyroaurite-2HHide

Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Cell Parameters:
a = 3.113(3) Å, c = 15.61(1) Å
Ratio:
a:c = 1 : 5.014
Unit Cell V:
131.01 ų (Calculated from Unit Cell)
Morphology:
Thin plates {0001}, with a hexagonal outline and striated and indistinct lateral faces.
Comment:
Z = 1/4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.78 Å(10)
3.90 Å(6)
2.65 Å(4)
2.54 Å(5)
2.39 Å(3)
2.21 Å(5)
1.87 Å(5)

First Recorded Occurrence of Pyroaurite-2HHide

Synonyms of Pyroaurite-2HHide

Other Language Names for Pyroaurite-2HHide

German:Sjögrenit
Simplified Chinese:水碳铁镁石
Spanish:Sjögrenita
Traditional Chinese:水碳鐵鎂石

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Pyroaurite-2H associated with TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
2 photos of Pyroaurite-2H associated with PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2O
2 photos of Pyroaurite-2H associated with KassiteCaTi2O4(OH)2
2 photos of Pyroaurite-2H associated with HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
1 photo of Pyroaurite-2H associated with MagnetiteFe2+Fe3+2O4
1 photo of Pyroaurite-2H associated with CafetiteCaTi2O5 · H2O
1 photo of Pyroaurite-2H associated with CalciteCaCO3

Related Minerals - Nickel-Strunz GroupingHide

5.DA.AlexkhomyakoviteK6(Ca2Na)(CO3)5Cl·6H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
5.DA.05DypingiteMg5(CO3)4(OH)2 · 5H2OMon.
5.DA.05GiorgiositeMg5(CO3)4(OH)2 · 5-6H2O
5.DA.05HydromagnesiteMg5(CO3)4(OH)2 · 4H2OMon.
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 5H2OMon.
5.DA.05UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995)Mg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
5.DA.05UM1987-01-CO:HMgSMg4(CO3)2(OH)4 · 6H2O ?Mon.
5.DA.10ArtiniteMg2(CO3)(OH)2 · 3H2OMon.
5.DA.10IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
5.DA.10ChlorartiniteMg2(CO3)(OH)Cl · 2H2OTrig. 3m : R3c
5.DA.15OtwayiteNi2(CO3)(OH)2 · H2OOrth.
5.DA.15ZaratiteNi3(CO3)(OH)4 · 4H2O ?Iso.
5.DA.20KambaldaiteNaNi4(CO3)3(OH)3 · 3H2OHex.
5.DA.25CallaghaniteCu2Mg2(CO3)(OH)6 · 2H2OMon.
5.DA.30Claraite(Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14·7H2OTric.
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2OTric.
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2OHex.
5.DA.40CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig.
5.DA.40QuintiniteMg4Al2(OH)12(CO3) · 3H2OHex. 6 2 2 : P63 2 2
5.DA.40CharmariteMn2+4Al2(OH)12[CO3] · 3H2O
5.DA.45Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.DA.45BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
5.DA.45Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.DA.45ZaccagnaiteZn4Al2(OH)12[CO3] · 3H2OHex.
5.DA.50ComblainiteNi4Co2(OH)12[CO3] · 3H2OTrig.
5.DA.50DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m)
5.DA.50HydrotalciteMg6Al2(CO3)(OH)16 · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig.
5.DA.50StichtiteMg6Cr3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50UM1998-10-CO:CoHNiNi6Co2(CO3)(OH)16 · 4H2O
5.DA.55CoalingiteMg10Fe3+2(OH)24[CO3] · 2H2OTrig.

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

16b.6.1.1Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
16b.6.1.2Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
16b.6.1.4ZaccagnaiteZn4Al2(OH)12[CO3] · 3H2OHex.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

11.13.1SideriteFeCO3Trig. 3m (3 2/m) : R3c
11.13.2PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
11.13.4BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
11.13.5CoalingiteMg10Fe3+2(OH)24[CO3] · 2H2OTrig.
11.13.6AnkeriteCa(Fe2+,Mg)(CO3)2Trig. 3 : R3

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 Pyroaurite-2HHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Aminoff and Broomé (1930), Svenska Vetenskapsakademien, Stockholm, Handlingar: 9: 3, no. 5: 23.
Frondel, C. (1941): Constitution and polymorphism of the pyroaurite and sjögrenite groups. American Mineralogist 26, 295-315.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 659-660.
Allmann, R. and H.-H. Lohse (1966): Die Kristallstruktur des Sjögrenits und eines Umwandlungsproduktes des Koenenits (= Chlor-Manasseits). Neues Jahrb. Mineral., Monatsh., 161–181.
Ingram, L. and H.F.W. Taylor (1967): The crystal structures of sjögrenite and pyroaurite. Mineral. Mag., 36, 465–479.
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1983): 112: 617.
Ivanov, O.K., Y.V. Mozzherin, and V.I. Vilisov (1986): New data on sjögrenite. Izvestiya Akad. Nauk Kazakh. SSR, Geol. Ser. 1, 40–45 (in Russian).
Mills, S.J., Christy, A.G., Genin, J.-M.R., Kameda, T., Colombo, F. (2012): Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76, 1289-1336.

Internet Links for Pyroaurite-2HHide

Localities for Pyroaurite-2HHide

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
 
  • Tasmania
    • Huon Valley municipality
      • Huon-Channel region
        • Weld river district
Bottrill R.S. & Baker, W.E. (2008) A Catalogue of Minerals of Tasmania. Tasmanian Geological Survey Bulletin 73, 254p. (p. 163)
    • Waratah-Wynyard municipality
      • Corinna-Savage River district
Bottrill & Taheri, 2008, Savage River mine, Unpub. Rept, Mineral Resources Tasmania; Bottrill R.S. & Baker, W.E. (2008) A Catalogue of Minerals of Tasmania. Tasmanian Geological Survey Bulletin 73, 254p. (p. 163)
    • West Coast municipality
      • Trial Harbour district
Bottrill, R.S., Baker, W.E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey Tasmania Bulletin 73, 254 pages.
      • Zeehan district
        • Mt Heemskirk mineral field
Bottrill R.S. & Baker, W.E. (2008) A Catalogue of Minerals of Tasmania. Tasmanian Geological Survey Bulletin 73, 254p. (p. 163)
Austria
 
  • Lower Austria
    • Melk District
      • Persenbeug-Gottsdorf
        • Loja
Löffler, E. & Kolitsch, U. (2011): Die Mineralien der Loja bei Persenbeug, Niederösterreich (II). Mineralien-Welt. 22 (4): 51-62
Canada
 
  • Québec
    • Chaudière-Appalaches
      • Les Appalaches RCM
        • Saint-Julien
SABINA, A.P. (1967) Geological Survey of canada Paper, 66-51, 170p
Germany
 
  • Bavaria
    • Upper Palatinate
      • Schwandorf
        • Winklarn
Blaß, G. and Graf, H.W. (1994) Neue Funde. Mineralien-Welt, 2/94, 46-47.; Wittern, A. (2001) Mineralfundorte in Deutschland.
  • Lower Saxony
    • Goslar
      • Grane Reservoir
Schnorrer-Köhler, G. (1991): Mineralogische Notizen V. Aufschluss 42, 155-171.
Italy
 
  • Sardinia
    • South Sardinia Province
      • Teulada
Conti L, Cozupoli D., Lombardi G, Traversa g. 1970 - Segnalazione di Sjögrenite nelle contattiti presso Teulada (Sardegna meridionale) Per. Min. Roma, vol. 39 A, (special volume), pp. 119-127
  • Trentino-Alto Adige
    • Trento Province (Trentino)
      • Ala
        • Pilcante
Bortolozzi, G., Boscardin, M., Rocchetti, I., Bersani, D. (2013): Cafetite e kassite della cava di Pilcante in Val d'Adige (Ala, Trento). Micro, 11, 1, 39-48.
  • Veneto
    • Vicenza Province
      • Cogollo del Cengio
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
      • Laghi
Antonio Zordan collection
      • Posina
        • Borcola Pass
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
        • Pasubio Massif
          • Punta della Lucche
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
Japan
 
  • Aichi Prefecture
    • Shinshiro city
Alfredo Petrov - unpublished document - 2007
Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
Kazakhstan
 
  • North Kazakhstan Region
    • Aiyrtau
      • Zlatogorsk
        • Zlatogorsk ultramafic intrusion
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Poland
 
  • Silesian Voivodeship
    • Wodzisław Co.
      • Wodzisław Śląski
Ł. Kruszewski PXRD data
Russia
 
  • Irkutsk Oblast
    • Zheleznogorsk (Korshunikha)
Mazurov, M.P., Grishina, S.N., Istomin, V.E., and Titov, A.T. (2007): Geology of Ore Deposits 49(4), 271-284.; Mazurov et al (2007) Geology of Ore Deposits, 49, 271–284.
  • Murmansk Oblast
    • Kovdor Massif
http://maurice.strahlen.org/kola/kovdor.htm
Sweden (FRL)
 
  • Värmland County
    • Filipstad
Progr.Abstr.Min.Soc.Amer.(1940) p. 6; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
      • Persberg ore district
Sandström, F., Lorin, T. & Strand, U. (2009): Geologi och mineralogi i Gåsgruvefältet, Filipstad. Litofilen. 26 (2): 16-38
Linden, R.H. (2002): Gåsgruvan, En mineralundersökning under åren 1996-2002. Östra Värmlands Mineralsällskap (Cited in Sandström, F., Lorin, T. & Strand, U. (2009): Geologi och mineralogi i Gåsgruvefältet, Filipstad. Litofilen. 26 (2): 16-38
Östra Värmlands Mineral Society,Långban,Sweden
UK
 
  • Scotland
    • Shetland
      • Unst
Dr Stephen Moreton collection.
USA
 
  • California
    • San Francisco Co.
      • San Francisco
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 340; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 199.
    • Sonoma Co.
      • Healdsburg
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 200.
www.minresco.com/syst/s.htm
  • New Jersey
    • Sussex County
      • Franklin Mining District
        • Ogdensburg
          • Sterling Hill
Dunn, P.J. & Leavens, Min.Rec.:12:371-372: (1981); Dunn(1995):Pt4:625.; Dunn, P. (1995) Franklin and Sterling Hill, privately published.
 
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