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Julgoldite-(Fe2+)

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Julian R. Goldsmith
Formula:
Ca2Fe2+Fe3+2(Si2O7)(SiO4)(OH)2 · H2O
Crystal System:
Monoclinic
Name:
Named for its relationship to julgoldite-(Fe3+).

Julian Royce Goldsmith (26 February 1918, Chicago, Illinois, USA - 23 January 1999, USA), geochemist at the University of Chicago. He was an expert on feldspars and carbonates. He also served as president of the Geochemical Society, the Mineralogical Soeciety of America, and the Geological Society of America.
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Classification of Julgoldite-(Fe2+)Hide

Approved
9.BG.20

9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination
58.2.2.1

58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
2 : Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
14.22.8

14 : Silicates not Containing Aluminum
22 : Silicates of Fe and Ca

Chemical Properties of Julgoldite-(Fe2+)Hide

Formula:
Ca2Fe2+Fe3+2(Si2O7)(SiO4)(OH)2 · H2O

Crystallography of Julgoldite-(Fe2+)Hide

Crystal System:
Monoclinic

Type Occurrence of Julgoldite-(Fe2+)Hide

Other Language Names for Julgoldite-(Fe2+)Hide

Relationship of Julgoldite-(Fe2+) to other SpeciesHide

Other Members of this group:
Julgoldite-(Fe3+)Ca2Fe3+Fe3+2(Si2O7)(SiO4)O(OH) · H2OMon.
Julgoldite-(Mg)Ca2MgFe3+2(Si2O7)(SiO4)(OH)2 · H2OMon.
OkhotskiteCa2(Mn,Mg)(Mn3+,Al,Fe3+)2(Si2O7)(SiO4)(OH)2 · H2OMon.
PoppiiteCa2(V3+,Fe3+,Mg)(V3+,Al)2(Si2O7)(SiO4)(OH,O)2 · H2OMon. 2/m : B2/m
Pumpellyite-(Al)Ca2Al3(Si2O7)(SiO4)(OH,O)2 · H2OMon.
Pumpellyite-(Fe2+)Ca2Fe2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.
Pumpellyite-(Fe3+)Ca2(Fe3+,Mg)(Al,Fe3+)2(Si2O7)(SiO4)(OH,O)2 · H2OMon.
Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2OMon.
Pumpellyite-(Mn2+)Ca2Mn2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.
ShuiskiteCa2MgCr2(Si2O7)(SiO4)(OH)2 · 2H2OMon.
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Calcite13 photos of Julgoldite-(Fe2+) associated with Calcite on mindat.org.
Prehnite7 photos of Julgoldite-(Fe2+) associated with Prehnite on mindat.org.
Fluorapophyllite-(K)3 photos of Julgoldite-(Fe2+) associated with Fluorapophyllite-(K) on mindat.org.
Pectolite3 photos of Julgoldite-(Fe2+) associated with Pectolite on mindat.org.
Gonyerite2 photos of Julgoldite-(Fe2+) associated with Gonyerite on mindat.org.
Greenockite2 photos of Julgoldite-(Fe2+) associated with Greenockite on mindat.org.
Quartz2 photos of Julgoldite-(Fe2+) associated with Quartz on mindat.org.
Pumpellyite2 photos of Julgoldite-(Fe2+) associated with Pumpellyite on mindat.org.
Epistilbite2 photos of Julgoldite-(Fe2+) associated with Epistilbite on mindat.org.
Pumpellyite-(Fe2+)1 photo of Julgoldite-(Fe2+) associated with Pumpellyite-(Fe2+) on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.BG.XCyprineCa19Cu2+(Al10Mg2)Si18O68(OH)10Tet. 4/m : P4/n
9.BG.05bAllanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(La){CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(Y){CaY}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05aClinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bDissakisite-(Ce){CaCe}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Dollaseite-(Ce){CaCe}{MgAlMg}(Si2O7)(SiO4)(OH)FMon. 2/m : P21/m
9.BG.05aEpidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Hancockite{CaPb}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05Khristovite-(Ce){CaCe}{MgAlMn2+}(Si2O7)(SiO4)(OH)FMon. 2/m : P21/m
9.BG.05Mukhinite{Ca2}{Al2V3+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Piemontite-(Sr){CaSr}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05bManganiandrosite-(La){Mn2+La}{Mn3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05Tawmawite{Ca2}{(Al,Fe3+,Cr)3}(Si2O7)(SiO4)O(OH)
9.BG.05Tweddillite{CaSr}{Mn3+AlMn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bFerriallanite-(Ce){CaCe}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Niigataite{CaSr}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m
9.BG.05Manganiandrosite-(Ce){Mn2+Ce}{Mn3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Dissakisite-(La){CaLa}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Vanadoandrosite-(Ce){Mn2+Ce}{V3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Uedaite-(Ce){Mn2+Ce}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Epidote-(Sr){CaSr}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(Nd){CaNd}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bFerriallanite-(La){CaLa}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bÅskagenite-(Nd){Mn2+Nd}{Al2Fe3+}(Si2O7)(SiO4)O2Mon. 2/m : P21/m
9.BG.10Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
9.BG.15MacfalliteCa2Mn3+3(SiO4)(Si2O7)(OH)3Mon.
9.BG.15SursassiteMn2+2Al3(SiO4)(Si2O7)(OH)3Mon. 2/m : P21/m
9.BG.20OkhotskiteCa2(Mn,Mg)(Mn3+,Al,Fe3+)2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.20Pumpellyite-(Fe2+)Ca2Fe2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.20Pumpellyite-(Fe3+)Ca2(Fe3+,Mg)(Al,Fe3+)2(Si2O7)(SiO4)(OH,O)2 · H2OMon.
9.BG.20Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.20Pumpellyite-(Mn2+)Ca2Mn2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.20ShuiskiteCa2MgCr2(Si2O7)(SiO4)(OH)2 · 2H2OMon.
9.BG.20Julgoldite-(Fe3+)Ca2Fe3+Fe3+2(Si2O7)(SiO4)O(OH) · H2OMon.
9.BG.20Pumpellyite-(Al)Ca2Al3(Si2O7)(SiO4)(OH,O)2 · H2OMon.
9.BG.20PoppiiteCa2(V3+,Fe3+,Mg)(V3+,Al)2(Si2O7)(SiO4)(OH,O)2 · H2OMon. 2/m : B2/m
9.BG.20Julgoldite-(Mg)Ca2MgFe3+2(Si2O7)(SiO4)(OH)2 · H2OMon.
9.BG.25GanomalitePb9Ca5Mn(Si2O7)4(SiO4)OHex.
9.BG.30RustumiteCa10(Si2O7)2(SiO4)(OH)2Cl2Mon.
9.BG.35Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10Tet.
9.BG.35WiluiteCa19(Al,Mg)13(B,☐,Al)5(Si2O7)4(SiO4)10(O,OH)10Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35ManganvesuvianiteCa19Mn3+(Al,Mn3+,Fe3+)10(Mg,Mn2+)2(Si2O7)4(SiO4)10O(OH)9Tet. 4/m : P4/n
9.BG.35FluorvesuvianiteCa19(Al,Mg,Fe2+)13(Si2O7)4(SiO4)10O(F,OH)9Tet. 4/mmm (4/m 2/m 2/m)
9.BG.40Vyuntspakhkite-(Y)(Y,Yb)4Al2.5-1.5(Si,Al)1.5-2.5(SiO4)4O(OH)7
9.BG.45DellaiteCa6Si3O11(OH)2Tric.
9.BG.50Gatelite-(Ce)CaCe3Al2(Al,Mg)(Mg,Fe2+,Al)(Si2O7)(SiO4)3(O,F)(OH,O)2Mon. 2/m : P21/b
9.BG.55Västmanlandite-(Ce)Ce3CaMg2Al2Si2O15(OH)2FMon. 2/m : P21/m

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

58.2.2.2Julgoldite-(Fe3+)Ca2Fe3+Fe3+2(Si2O7)(SiO4)O(OH) · H2OMon.
58.2.2.3Okhotskite-(Mg)Ca8(Mn2+,Mg)(Mn3+,Al,Fe3+)(SiO4)(Si2O7)(OH)2 · H2OMon.
58.2.2.3Epidote-(Sr){CaSr}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.2.5Pumpellyite-(Fe2+)Ca2Fe2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.
58.2.2.6Pumpellyite-(Fe3+)Ca2(Fe3+,Mg)(Al,Fe3+)2(Si2O7)(SiO4)(OH,O)2 · H2OMon.
58.2.2.7Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2OMon.
58.2.2.8Pumpellyite-(Mn2+)Ca2Mn2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.
58.2.2.9ShuiskiteCa2MgCr2(Si2O7)(SiO4)(OH)2 · 2H2OMon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.22.1HedenbergiteCaFe2+Si2O6Mon. 2/m : B2/b
14.22.2Pyroxferroite(Fe,Mn,Ca)SiO3Tric.
14.22.3 Ferro-akermaniteCa2FeSi2O7
14.22.4KirschsteiniteCaFe2+SiO4Orth. mmm (2/m 2/m 2/m) : Pnma
14.22.5TungusiteCa4Fe2Si6O15(OH)6
14.22.6Ferro-actinolite☐{Ca2}{Fe2+5}(Si8O22)(OH)2Mon.
14.22.7IlvaiteCaFe3+Fe2+2(Si2O7)O(OH)Orth. mmm (2/m 2/m 2/m)
14.22.9AndraditeCa3Fe3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d

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 Julgoldite-(Fe2+)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Norsk Geologisk Tidsskrift (1984): 64: 251-255.

Internet Links for Julgoldite-(Fe2+)Hide

Localities for Julgoldite-(Fe2+)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.
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Haslach
        • Urenkopf
K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
      • Kandern
Brill, A. R. (2011): Die Malsburger Granitsteinbrüche bei Kandern im südwestlichen Schwarzwald. Lapis 36 (7-8), 43-51; 70.
  • Rhineland-Palatinate
    • Palatinate
      • Alsenz-Obermoschel
        • Waldgrehweiler
Poser, C., and Lutz, H. (2004): Mineralien aus Rheinland-Pfalz.Landessammlung für Naturkunde Rheinland-Pfalz (Mainz)
      • Otterberg
        • Niederkirchen
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
      • Wolfstein
        • Kreimbach-Kaulbach
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
  • Saxony
    • Erzgebirge
      • Freiberg District
        • Naundorf
Grütze, T. (2006): Rauchquarz und Kugelpyrite aus dem Steinbruch Naundorf bei Freiberg/Sachsen. Lapis 31 (12), 16-19.
India
 
  • Maharashtra
    • Mumbai District (Bombay District)
      • Mumbai (Bombay)
        • Ward 38
          • Malad
Wise and Moller (1990) Occurrence of Ca-Fe silicate minerals with zeolites in basalt cavities at Bombay, India. European Journal of Mineralogy, v. 2, pp. 875-883.
Italy
 
  • Sardinia
    • Olbia-Tempio Pausania Province
      • La Maddalena
        • La Maddalena Island
Gamboni, A. (2003): Cala Francese - La Maddalena (SS). Micro (località), 2003, 11-20
Japan
 
  • Honshu Island
    • Chugoku Region
      • Shimane Prefecture
        • Matsue City
          • Kitaura
Matsubara et al (1992) Koubutsu-Gakkai Kou'en-Youshi, 161.
Norway
 
  • Møre og Romsdal
    • Norddal
      • Tafjord
Eldjarn, K.(1982)."Julgolditt fra Tafjordtunnelen". NAGS-nytt 9(3),32-33 (in norwegian)
Sweden (TL)
 
  • Värmland
    • Filipstad
Lithos (1971) 4, 93-99; Canadian Mineralogist(1967) 9, 301; 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.
Lithos (1971) 4, 93-99; Canadian Mineralogist (1967) 9, 301; Langban: The mines, their minerals, geology and explorers
      • Persberg district
        • Pajsberg
Nysten, P. (2004): Harstigen ett mineralogisk eldorado i Bergslagen. Norsk Bergverksmuseum Skrift 28: 5-13
Ukraine
 
  • Crimea Oblast'
    • Crimea peninsula
      • Bakhchisaray area
        • Trudolyubovka Village
Karpenko V., Ignatenko K. Babingtonite form the Pervomaiskii quarry in the Crimea // Novye dannye o mineralakh (New Data on Minerals), 1991, #37, 58 - 63 (in Russ.) Getling R.V. Datolith of the Bodrak area in the Crimea and some features of his genesis // ZVMO, 1960, vol. 89, #1, 102 - 106 (in Russ.)
USA
 
  • California
    • Trinity Co.
      • Coastal Range
        • Mad River Rock
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 493; Mineralogical Record, 18(5), 341.
  • Connecticut
    • New Haven Co.
      • Southbury
Vajdak, Josef. (1998): New Mineral Finds in the Second Half of 1997, News from Josef Vajdak of Pequa Rare Minerals and Metals. Mineral News: 14(1): 4.; Martins da Pedra specimen
Mineral and/or Locality  
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