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Hiortdahlite

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Formula:
(Ca,Na)3(Zr,Ti)(Si2O7)(O,OH,F)2
System:
Triclinic
Colour:
Yellow, yellowish-brown
Lustre:
Vitreous
Hardness:
5 - 5½
Wöhlerite Group.

Hiortdahlite (approved) has been split in 1985 into two species - Hiortdahlite I (not approved as such) and Hiortdahlite II (never submitted to IMA). They are crystallographically close, both belonging to the Wöhlerite Group (Cuspidine Group).

The original hiortdahlite material is from Lille Arøya (Midtre Arøy; Øvre Arøy; Övre-Arö), Langesundsfjorden, Larvik, Vestfold, Norway.

Classification of Hiortdahlite

Redefined Approved 1985
9.BE.17

9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
56.2.4.7

56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
17.1.22

17 : Silicates Containing other Anions
1 : Silicates with fluoride (not containing Al)
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Physical Properties of Hiortdahlite

Vitreous
Colour:
Yellow, yellowish-brown
Hardness (Mohs):
5 - 5½

Crystallography of Hiortdahlite

Crystal System:
Triclinic
Cell Parameters:
a = 10.95Å, b = 10.31Å, c = 7.29Å
α = 90.32°, β = 109.03°, γ = 95.08°
Ratio:
a:b:c = 1.062 : 1 : 0.707

Optical Data of Hiortdahlite

Type:
Biaxial (+)
RI values:
nα = 1.639 - 1.658 nβ = 1.643 - 1.664 nγ = 1.646 - 1.671
2V:
Measured: 80° , Calculated: 80° to 86°
Max Birefringence:
δ = 0.007 - 0.013
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v strong

Chemical Properties of Hiortdahlite

Formula:
(Ca,Na)3(Zr,Ti)(Si2O7)(O,OH,F)2
Essential elements:
All elements listed in formula:
Common Impurities:
OH,Hf,Sn,Al,Y,TR,Fe,Nb,U,Mn,Mg,Sr,K

Relationship of Hiortdahlite to other Species

Other Members of Group:
BaghdaditeCa3(Zr,Ti)(Si2O7)O2
BurpaliteNa2CaZr(Si2O7)F2
CuspidineCa4(Si2O7)(F,OH)2
Janhaugite(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2
Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2
MarianoiteNa2Ca4(Nb,Zr)2(Si2O7)2(O,F)4
Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2
NormanditeNaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF
WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2
9.BE.02Wadsleyite(Mg,Fe2+)2(SiO4)
9.BE.05HennomartiniteSrMn23+(Si2O7)(OH)2 · H2O
9.BE.05LawsoniteCaAl2(Si2O7)(OH)2 · H2O
9.BE.05NoelbensoniteBaMn23+(Si2O7)(OH)2 · H2O
9.BE.05ItoigawaiteSrAl2(Si2O7)(OH)2 · H2O
9.BE.07IlvaiteCaFe22+Fe3+(Si2O7)O(OH)
9.BE.07ManganilvaiteCa(Mn2+,Fe2+)2Fe3+(Si2O7)O(OH)
9.BE.10SuoluniteCa2(H2Si2O7) · H2O
9.BE.12JaffeiteCa6(Si2O7)(OH)6
9.BE.15FresnoiteBa2Ti(Si2O7)O
9.BE.17BaghdaditeCa3(Zr,Ti)(Si2O7)O2
9.BE.17BurpaliteNa2CaZr(Si2O7)F2
9.BE.17CuspidineCa4(Si2O7)(F,OH)2
9.BE.17Janhaugite(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2
9.BE.17Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2
9.BE.17Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2
9.BE.17NormanditeNaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF
9.BE.17WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2
9.BE.17Hiortdahlite INa4Ca8Zr2(Nb,Mn,Ti,Fe,Mg,Al)2(Si2O7)4O3F5
9.BE.17MarianoiteNa2Ca4(Nb,Zr)2(Si2O7)2(O,F)4
9.BE.20Mosandrite(◻,Ca,Na)3(Ca,REE)4Ti(Si2O7)2[H2O,OH,F]4 · H2O
9.BE.20Nacareniobsite-(Ce)Na3Ca3(Ce,La,Nd)Nb(Si2O7)2OF3
9.BE.22GötzeniteNa2Ca5Ti(Si2O7)2F4
9.BE.22HainiteNa4Ca8(Ti,Zr,Mn)3(Si2O7)4F4
9.BE.22Rosenbuschite(Ca,Na)3(Zr,Ti)(Si2O7)OF
9.BE.22Kochite(Na,Ca)3Ca2(Mn,Ca)ZrTi(Si2O7)2(F,O)4
9.BE.23DovyreniteCa6Zr(Si2O7)2(OH)4
9.BE.25Barytolamprophyllite(Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F)
9.BE.25EricssoniteBaMn22+Fe3+(Si2O7)O(OH)
9.BE.25Lamprophyllite(Sr,K,Ba)2(Na,Ti,Mn2+,Fe3+)4Ti2(Si2O7)2O(O,OH,F)
9.BE.25Ericssonite-2OBaMn22+Fe3+(Si2O7)O(OH)
9.BE.25SeidozeriteNa8Mn22+Zr3Ti3(Si2O7)4O4F4
9.BE.25NabalamprophylliteNa3(Ba,Na)2Ti3(Si2O7)2O2(OH,F)2
9.BE.25Grenmarite(Na,Ca)4(Mn,Na)(Zr,Mn)2(Zr,Ti)(Si2O7)2(O,F)4
9.BE.25SchülleriteBa2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4
9.BE.25LileyiteBa2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2
9.BE.27MurmaniteNa2Ti2(Si2O7)O2 · 2H2O
9.BE.30EpistoliteNa2(Nb,Ti)2(Si2O7)O2 · nH2O
9.BE.32LomonosoviteNa5Ti2(Si2O7)(PO4)O2
9.BE.35VuonnemiteNa11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH)
9.BE.37SoboleviteNa13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3
9.BE.40InneliteNa2CaBa4Ti3(Si2O7)2(SO4)2O4
9.BE.40PhosphoinneliteNa3Ba4Ti3(Si2O7)2(PO4,SO4)2O2F
9.BE.42YoshimuraiteBa2Mn2Ti(Si2O7)(PO4)O(OH)
9.BE.45QuadruphiteNa14Ca2Ti4(Si2O7)2(PO4)2O2F
9.BE.47PolyphiteNa5(Na4Ca2)Ti2(Si2O7)(PO4)3O2F2
9.BE.50BornemaniteNa6BaTi2Nb(Si2O7)2(PO4)O2(OH)F
9.BE.50ShkatulkaliteNa10Mn2+Ti3Nb3(Si2O7)6(OH)2F · 12H2O
9.BE.55BafertisiteBa(Fe2+,Mn2+)2Ti(Si2O7)O(F,OH)2
9.BE.55HejtmaniteBa(Mn2+,Fe2+)2Ti(Si2O7)O(OH,F)
9.BE.55Bykovaite(Ba,Na,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(H2O,F,OH)2 · 3.5H2O
9.BE.55Nechelyustovite(Ba,Sr,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(O,H2O,F)2 · 4.5H2O
9.BE.60Delindeite(Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2O
9.BE.65BusseniteNa2Ba2Fe2+Ti(Si2O7)(CO3)(OH)3F
9.BE.67JinshajiangiteBaNaFe42+Ti2(Si2O7)2O2(OH)2F
9.BE.67PerraultiteBaNaMn42+Ti2 (Si2O7)2O2(OH)2F
9.BE.67SurkhobiteNaCaBa2Mn8Ti4(Si2O7)4O5F5
9.BE.70Karnasurtite-(Ce)(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O
9.BE.70Perrierite-(Ce)(Ce,Ca,Th)4(Fe2+,Mg)Fe23+(Ti,Fe3+)2(Si2O7)2O8
9.BE.70Strontiochevkinite(Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8
9.BE.70Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
9.BE.70Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
9.BE.70RengeiteSr4ZrTi4(Si2O7)2O8
9.BE.70MatsubaraiteSr4Ti5(Si2O7)2O8
9.BE.70Dingdaohengite-(Ce)(Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe2+)2Ti2(Si2O7)2O8
9.BE.70Maoniupingite-(Ce)(Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8
9.BE.70Perrierite-(La)(La,Ce,Ca)4(Fe,Mn2+,Mg)Fe23+(Ti,Fe3+)2(Si2O7)2O8
9.BE.70UKI-2008-(SiO:SrTiZr)Sr4ZrTi4(Si2O7)2O8
9.BE.70Hezuolinite(Sr,REE)4Zr(Ti,Fe3+)4(Si2O7)2O8
9.BE.72FersmaniteCa4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3
9.BE.75BelkoviteBa3(Nb,Ti)6(Si2O7)2O12
9.BE.77NasonitePb6Ca4(Si2O7)3Cl2
9.BE.80KentrolitePb2Mn23+(Si2O7)O2
9.BE.80MelanotekitePb2Fe23+(Si2O7)O2
9.BE.82TilleyiteCa5(Si2O7)(CO3)2
9.BE.85KillalaiteCa6.4(H0.6Si2O7)2(OH)2
9.BE.87Stavelotite-(La)(La,Nd,Ca)3Mn32+Cu(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30
9.BE.90Biraite-(Ce)Ce2Fe2+(Si2O7)(CO3)
9.BE.92Cervandonite-(Ce)(Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH)
9.BE.95BatisiviteBaV83+Ti6(Si2O7)O22
17.1.1HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
17.1.3AgrelliteNaCa2Si4O10F
17.1.4Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2O
17.1.5Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
17.1.6Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2O
17.1.7HsianghualiteCa3Li2(Be3Si3O12)F2
17.1.8LeucophaniteNaCaBeSi2O6F
17.1.9NorbergiteMg3(SiO4)(F,OH)2
17.1.10Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2
17.1.11Humite(Mg,Fe2+)7(SiO4)3(F,OH)2
17.1.12ClinohumiteMg9(SiO4)4F2
17.1.13CanasiteK2Na4Ca5(Si12O30(OH,F)4
17.1.14Charoite(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2O
17.1.15CuspidineCa4(Si2O7)(F,OH)2
17.1.16BultfonteiniteCa2(HSiO4)F · H2O
17.1.17ZeophylliteCa13(Si10O28)F10 · 6H2O
17.1.18Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
17.1.19Yuksporite(K,Ba)NaCa2(Si,Ti)4O11(F,OH) · H2O
17.1.20Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
17.1.21Mosandrite(◻,Ca,Na)3(Ca,REE)4Ti(Si2O7)2[H2O,OH,F]4 · H2O
17.1.23BurpaliteNa2CaZr(Si2O7)F2
17.1.24SeidozeriteNa8Mn22+Zr3Ti3(Si2O7)4O4F4
17.1.25ThorosteenstrupineCaMnThSi4O11(OH)F · 6H2O
17.1.26Zircophyllite(K,Na)3(Mn,Fe2+)7(Zr,Ti)2Si8O24(O,OH,F)7
17.1.27JinshajiangiteBaNaFe42+Ti2(Si2O7)2O2(OH)2F
17.1.28Rosenbuschite(Ca,Na)3(Zr,Ti)(Si2O7)OF
17.1.29NarsarsukiteNa4(Ti,Fe)2[Si8O20](O,OH,F)2
17.1.30SonoliteMn92+(SiO4)4(OH,F)2

Other Names for Hiortdahlite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Hiortdahlite

Localities for Hiortdahlite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Canada
 
  • Québec
    • Abitibi-Témiscamingue
      • Témiscamingue RCM
        • Les Lacs-du-Témiscamingue
Aarden, H. M., & Gittins, J., 1974. Hiortdahlite from Kipawa river, Villedieu township, Temiscaming County, Québec, Canada. Canadian Mineralogist, 12: 241-247. ; Canadian Mineralogist Vol. 34, pp.435-451 (1996)
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
HORVÁTH, L. & PFENNINGER-HORVÁTH, E. (2000) I minerali di Mont-Saint-Hilaire (Québec, Canada) Rivista Mineralogica Italiana, XXIV, 140-202 (in Italian with English summary).
  • Québec & Newfoundland and Labrador
Miller (1996), Can.Min.: 34:349-371; Salvi & Williams-Jones (1995); Am.Min.: 80:1031-1040; Miller (1990), Newfoundland Dept. of Mines & Energy Geol. Sur. Report 90-1: 171-182.; BIRKETT, T.C., MILLER, R.R., ROBERTS, A.C., & MARIANO, A.N. (1992) Zirconium bearing minerals from the Strange Lake intrusive complex, Quebec Labrador. Canadian Mineralogist, 30, 191-205.
Germany
 
  • Rhineland-Palatinate
    • Eifel
      • Laach lake volcanic complex
        • Kruft
Hentschel, G., Neue Mineralfunde aus quartären Vulkanvorkommen der Eifel, Mainzer Geowis. Mitt. 15, 215-218, 1986
        • Mendig
          • Niedermendig
Hentschel, G., Neue Mineralfunde aus quartären Vulkanvorkommen der Eifel, Mainzer Geowis. Mitt. 15, 215-218, 1986
Hentschel, G., Neue Mineralfunde aus quartären Vulkanvorkommen der Eifel, Mainzer Geowis. Mitt. 15, 215-218, 1986
            • Wingertsberg
Hentschel, G., Neue Mineralfunde aus quartären Vulkanvorkommen der Eifel, Mainzer Geowis. Mitt. 15, 215-218, 1986
Greenland
 
  • Kujalleq
    • Narsaq
Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
  • Tunu Province (East Greenland)
    • Kangerlussuaq Firth
      • Amdrup Firth
Perchiazzi, N. et al. ( 2000): The crystal structure of Normandite and its crystal-chemical relationship with Lavenite, Canadian Mineralogist, Vol. 38, 641 - 648
Guinea
 
Lacroix, A. (1924). Nouvelles observations sur les syénites néphéliniques des Iles de Los (Guinée). C. r. hedb. Séanc. Acad. Sci., Paris, 178, 1109-1114.
Italy
 
  • Campania
    • Naples Province
      • Somma-Vesuvius Complex
[Lapis 1994:5 p.13-23,58]
          • Ercolano
            • San Vito
Russo, M., Punzo, I. (2004): I minerali del Somma-Vesuvio, AMI
  • Sicily
    • Catania Province
      • Etna Volcanic Complex
        • Biancavilla
Di Franco, S. (1942): Mineralogia Etnea. Atti dell'Accademia Gioenia di Scienze Naturali, Serie IV, 5, 175 pp.
  • Umbria
    • Terni Province
      • San Venanzo
V. V. Sharygin et al. , Eur. J. Mineral. , 1996, 8, pp. 1199-1212.
Morocco
 
  • Meknès-Tafilalet Region
    • Khénifra Province
      • Tamazeght Mountain Range
Robles, E., Fontan, F., Monchoux, P., Soerensen, H. (2001): Hiortdahlite II from the Ilimaussaq alkaline complex, South Greenland, South Greenland, Geology of Greenland Survey Bulletin, 190, 131-137
Norway
 
  • Vestfold
    • Larvik
      • Langesundsfjorden
        • Arøyskjærene (Arøy skerries)
Andersen, T., Erambert, M., Larsen, A. O., & Selbekk, R. S. (2010). Petrology of nepheline syenite pegmatites in the Oslo Rift, Norway: zirconium silicate mineral assemblages as indicators of alkalinity and volatile fugacity in mildly agpaitic magma. Journal of Petrology, 51(11), 2303-2325.
Andersen, T., Erambert, M., Larsen, A. O. and Selbekk, R. S. (2010): Petrology of nepheline syenite pegmatites in the Oslo Rift, Norway: Zirconium silicate mineral assemblages as indicators of alkalinity and volatile fugacity in mildly agpaitic magma. J. Petrology 51, 2303-2325.
Russia
 
  • Eastern-Siberian Region
    • Tuva Republic
      • Sangilen Upland
Kapustin, Y. L., & Bykova, A. V. (1965). First find of hiortdahlite in the USSR. Doklady Akad. Nauk SSSR, 161, 121-124.
Sweden
 
  • Småland
    • Jönköping
      • Gränna
Adamson, O. J. (1944): The Petrology of the Norra Kärr District. An occurrence of alkaline Rocks in Southern Sweden. Geologiska Föreningen i Stockholm Förhandlingar, 66: 112-255; Thulin, H. (1996): Norra Kärr. Litiofilen 13: 17-51
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