Janhaugite
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About Janhaugite
Formula:
(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2
Colour:
Reddish brown, golden-brown
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.6
Crystal System:
Monoclinic
Member of:
Name:
After Mr. Jan Haug (1934-1998), a Norwegian amateur mineralogist who participated in the systematic mineralogical investigation of the area in which the species was found.
Isostructural with:
This page provides mineralogical data about Janhaugite.
Classification of Janhaugite
Approved
8/C.11-12
9.BE.17
9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
56.2.4.10
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
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
14.9.37
14 : Silicates not Containing Aluminum
9 : Silicates of Ti
14 : Silicates not Containing Aluminum
9 : Silicates of Ti
Physical Properties of Janhaugite
Vitreous
Transparency:
Transparent
Colour:
Reddish brown, golden-brown
Streak:
Light brown
Hardness:
5 on Mohs scale
Tenacity:
Very brittle
Cleavage:
Distinct/Good
On(010)
On(010)
Density:
3.6 g/cm3 (Measured) 3.71 g/cm3 (Calculated)
Optical Data of Janhaugite
Type:
Biaxial (+)
RI values:
nα = 1.770 nβ = 1.828 nγ = 1.910
2V:
Measured: 80° , Calculated: 84°
Max Birefringence:
δ = 0.140

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v distinct
Pleochroism:
Weak
Comments:
X = nearly colourless
Y = beige
Y = beige
Chemical Properties of Janhaugite
Formula:
(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2
IMA Formula:
Na3Mn2+3Ti2(Si2O7)2(O,OH,F)4
Elements listed:
Common Impurities:
Ca,Fe,Zr,Nb,Ta,K,H2O
Crystallography of Janhaugite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 10.66 Å, b = 9.78 Å, c = 13.93 Å
β = 107.82°
β = 107.82°
Ratio:
a:b:c = 1.09 : 1 : 1.424
Unit Cell V:
1,382.59 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Subhedral grains and lamellar aggregates and sprays of prismatic crystals in miarolitic cavities. Crystals often curved and bent. Striated along [001].
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.920 | (40) |
3.202 | (60) |
2.839 | (100) |
2.833 | (90) |
2.782 | (90) |
2.742 | (40) |
1.744 | (50) |
Comments:
Gjerdingen, Norway.
Occurrences of Janhaugite
Paragenetic Mode(s):
• Granitic
Type Occurrence of Janhaugite
General Appearance of Type Material:
Subhedral grains in ekerite or as lamellar aggregates and sprays of prismatic crystals, up to 4mm long, in miarolitic cavities.
Place of Conservation of Type Material:
Mineralogical-Geological Museum, University of Oslo, Norway.
Geological Setting of Type Material:
As a rock-forming constituent of ekerite (a Na-rich alkali feldspar granite), and in miarolitic cavities.
Associated Minerals at Type Locality:
Reference:
Raade, G. & Mladeck, M. H. (1983): Janhaugite Na3Mn3Ti2SiO4O15(OH,F,O)3, a new mineral from Norway. American Mineralogist 68: 1216-1219.
Synonyms of Janhaugite
Other Language Names for Janhaugite
Relationship of Janhaugite to other Species
Member of:
Other Members of this group:
Baghdadite | Ca3(Zr,Ti)(Si2O7)O2 | Mon. |
Burpalite | Na2CaZr(Si2O7)F2 | Mon. |
Cuspidine | Ca4(Si2O7)(F,OH)2 | Mon. 2/m : P21/b |
Hiortdahlite | (Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 | Tric. |
Låvenite | (Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2 | Mon. 2/m : P21/b |
Marianoite | Na2Ca4(Nb,Zr)2(Si2O7)2(O,F)4 | Mon. 2 : P21 |
Niocalite | (Ca,Nb)4(Si2O7)(O,OH,F)2 | Mon. |
Normandite | NaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF | Mon. 2/m : P21/b |
Wöhlerite | NaCa2(Zr,Nb)(Si2O7)(O,OH,F)2 | Mon. 2 : P21 |
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Nickel-Strunz Grouping
9.BE.02 | Wadsleyite | (Mg,Fe2+)2(SiO4) | Orth. |
9.BE.05 | Hennomartinite | SrMn3+2(Si2O7)(OH)2 · H2O | Orth. |
9.BE.05 | Lawsonite | CaAl2(Si2O7)(OH)2 · H2O | Orth. mmm (2/m 2/m 2/m) : Cmcm |
9.BE.05 | Noelbensonite | BaMn3+2(Si2O7)(OH)2 · H2O | Orth. |
9.BE.05 | Itoigawaite | SrAl2(Si2O7)(OH)2 · H2O | Orth. |
9.BE.07 | Ilvaite | CaFe3+Fe2+2(Si2O7)O(OH) | Orth. mmm (2/m 2/m 2/m) |
9.BE.07 | Manganilvaite | CaFe2+Fe3+Mn2+(Si2O7)O(OH) | Mon. 2/m : P21/b |
9.BE.10 | Suolunite | Ca2(H2Si2O7) · H2O | Orth. |
9.BE.12 | Jaffeite | Ca6(Si2O7)(OH)6 | Trig. 3 : P3 |
9.BE.15 | Fresnoite | Ba2Ti(Si2O7)O | Tet. |
9.BE.17 | Baghdadite | Ca3(Zr,Ti)(Si2O7)O2 | Mon. |
9.BE.17 | Burpalite | Na2CaZr(Si2O7)F2 | Mon. |
9.BE.17 | Cuspidine | Ca4(Si2O7)(F,OH)2 | Mon. 2/m : P21/b |
9.BE.17 | Hiortdahlite | (Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 | Tric. |
9.BE.17 | Låvenite | (Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2 | Mon. 2/m : P21/b |
9.BE.17 | Niocalite | (Ca,Nb)4(Si2O7)(O,OH,F)2 | Mon. |
9.BE.17 | Normandite | NaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF | Mon. 2/m : P21/b |
9.BE.17 | Wöhlerite | NaCa2(Zr,Nb)(Si2O7)(O,OH,F)2 | Mon. 2 : P21 |
9.BE.17 | Hiortdahlite I | Na4Ca8Zr2(Nb,Mn,Ti,Fe,Mg,Al)2(Si2O7)4O3F5 | |
9.BE.17 | Marianoite | Na2Ca4(Nb,Zr)2(Si2O7)2(O,F)4 | Mon. 2 : P21 |
9.BE.20 | Mosandrite-(Ce) | (Ca3REE)[(H2O)2Ca0.5☐0.5]Ti(Si2O7)2(OH)2(H2O)2 | Mon. 2/m : P21/b |
9.BE.20 | Nacareniobsite-(Ce) | NbNa3Ca3(Ce,REE )(Si2O7)2OF3 | Mon. |
9.BE.22 | Götzenite | NaCa6Ti(Si2O7)2OF3 | Tric. 1 : P1 |
9.BE.22 | Hainite-(Y) | Na2Ca4(Y,REE)Ti(Si2O7)2OF3 | Tric. 1 : P1 |
9.BE.22 | Rosenbuschite | Na6Ca6Zr3Ti(Si2O7)4O2F6 | Tric. 1 : P1 |
9.BE.22 | Kochite | Na3Ca2MnZrTi(Si2O7)2OF3 | Tric. 1 : P1 |
9.BE.23 | Dovyrenite | Ca6Zr(Si2O7)2(OH)4 | Orth. mmm (2/m 2/m 2/m) : Pnnm |
9.BE.25 | Barytolamprophyllite | (Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F) | Mon. |
9.BE.25 | Ericssonite | BaMn2+2Fe3+(Si2O7)O(OH) | Mon. 2/m : B2/m |
9.BE.25 | Lamprophyllite | (Na,Mn2+)3(Sr,Na)2(Ti,Fe3+)3(Si2O7)2O2(OH,O,F)2 | Mon. |
9.BE.25 | Ericssonite-2O | BaMn2+2Fe3+(Si2O7)O(OH) | Orth. |
9.BE.25 | Seidozerite | Na4MnZr2Ti(Si2O7)2O2F2 | Mon. |
9.BE.25 | Nabalamprophyllite | Na3(Ba,Na)2Ti3(Si2O7)2O2(OH,F)2 | Mon. 2/m |
9.BE.25 | Grenmarite | Na4MnZr3(Si2O7)2O2F2 | Mon. 2/m : P2/b |
9.BE.25 | Schüllerite | Ba2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4 | Tric. 1 : P1 |
9.BE.25 | Lileyite | Ba2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2 | Mon. 2/m : B2/m |
9.BE.25 | Emmerichite | Ba2Na(Na,Fe2+)2(Fe3+,Mg)Ti2(Si2O7)2O2F2 | Mon. 2/m : B2/m |
9.BE.25 | Fluorbarytolamprophyllite | (Ba,Sr)2[(Na,Fe2+)3(Ti,Mg)F2][Ti2(Si2O7)2O2] | Mon. 2/m : B2/m |
9.BE.27 | Murmanite | Na2Ti2(Si2O7)O2 · 2H2O | Tric. |
9.BE.30 | Epistolite | Na2(Nb,Ti)2(Si2O7)O2 · nH2O | Tric. |
9.BE.32 | Lomonosovite | Na5Ti2(Si2O7)(PO4)O2 | Tric. |
9.BE.35 | Vuonnemite | Na11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH) | Tric. |
9.BE.37 | Sobolevite | Na13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3 | Mon. m : Pb |
9.BE.40 | Innelite | Na2CaBa4Ti3(Si2O7)2(SO4)2O4 | Tric. 1 : P1 |
9.BE.40 | Phosphoinnelite | Na3Ba4Ti3(Si2O7)2(PO4,SO4)2O2F | Tric. |
9.BE.42 | Yoshimuraite | Ba2Mn2Ti(Si2O7)(PO4)O(OH) | Tric. 1 : P1 |
9.BE.45 | Quadruphite | Na14Ca2Ti4(Si2O7)2(PO4)2O2F | Tric. |
9.BE.47 | Polyphite | Na5(Na4Ca2)Ti2(Si2O7)(PO4)3O2F2 | Tric. 1 : P1 |
9.BE.50 | Bornemanite | Na6BaTi2Nb(Si2O7)2(PO4)O2(OH)F | Tric. 1 : P1 |
9.BE.50 | Shkatulkalite | Na5(Nb1−xTix)2(Ti1−yMn2+y)[Si2O7]2O2(OH)2·nH2O (x + y = 0.5; n ≤ 10) | Mon. 2/m : P2/m |
9.BE.55 | Bafertisite | Ba2Fe2+4Ti2(Si2O7)2O2(OH)2F2 | Tric. |
9.BE.55 | Hejtmanite | Ba2(Mn2+,Fe2+)4Ti2(Si2O7)2O2(OH)2F2 | Tric. 1 |
9.BE.55 | Bykovaite | (Ba,Na,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(H2O,F,OH)2 · 3.5H2O | Mon. 2/m |
9.BE.55 | Nechelyustovite | (Ba,Sr,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(O,H2O,F)2 · 4.5H2O | Mon. 2/m : B2/m |
9.BE.60 | Delindeite | (Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2O | Mon. |
9.BE.65 | Bussenite | Na2Ba2Fe2+Ti(Si2O7)(CO3)(OH)3F | Tric. 1 : P1 |
9.BE.67 | Jinshajiangite | BaNaFe2+4Ti2(Si2O7)2O2(OH)2F | Tric. 1 : P1 |
9.BE.67 | Perraultite | BaNaMn2+4Ti2(Si2O7)2O2(OH)2F | Mon. 2/m : B2/m |
9.BE.67 | Surkhobite | NaCaBa2Mn8Ti4(Si2O7)4O5F5 | |
9.BE.70 | Karnasurtite-(Ce) | (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O | |
9.BE.70 | Perrierite-(Ce) | Ce4MgFe3+2Ti2(Si2O7)2O8 | Mon. 2/m : P21/b |
9.BE.70 | Strontiochevkinite | (Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8 | Mon. |
9.BE.70 | Chevkinite-(Ce) | (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8 | Mon. 2/m : P21/b |
9.BE.70 | Polyakovite-(Ce) | (Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8 | Mon. 2/m : B2/m |
9.BE.70 | Rengeite | Sr4ZrTi4(Si2O7)2O8 | Mon. 2/m : P21/b |
9.BE.70 | Matsubaraite | Sr4Ti5(Si2O7)2O8 | Mon. 2/m : P21/b |
9.BE.70 | Dingdaohengite-(Ce) | (Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe2+)2Ti2(Si2O7)2O8 | Mon. 2/m : P21/b |
9.BE.70 | Maoniupingite-(Ce) | (Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8 | Mon. 2/m : B2/m |
9.BE.70 | Perrierite-(La) | (La,Ce,Ca)4(Fe,Mn2+,Mg)Fe3+2(Ti,Fe3+)2(Si2O7)2O8 | Mon. 2/m : P21/b |
9.BE.70 | UKI-2008-(SiO:SrTiZr) | Sr4ZrTi4(Si2O7)2O8 | Orth. mmm (2/m 2/m 2/m) : Pbca |
9.BE.70 | Hezuolinite | (Sr,REE)4Zr(Ti,Fe3+)4(Si2O7)2O8 | Mon. 2/m : B2/m |
9.BE.72 | Fersmanite | Ca4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3 | Tric. |
9.BE.75 | Belkovite | Ba3(Nb,Ti)6(Si2O7)2O12 | Hex. |
9.BE.77 | Nasonite | Pb6Ca4(Si2O7)3Cl2 | Hex. |
9.BE.80 | Kentrolite | Pb2Mn3+2(Si2O7)O2 | Orth. mmm (2/m 2/m 2/m) : Pbcm |
9.BE.80 | Melanotekite | Pb2Fe3+2(Si2O7)O2 | Orth. |
9.BE.82 | Tilleyite | Ca5(Si2O7)(CO3)2 | Mon. |
9.BE.85 | Killalaite | Ca6.4(H0.6Si2O7)2(OH)2 | Mon. |
9.BE.87 | Stavelotite-(La) | (La,Nd,Ca)3Mn2+3Cu(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30 | Trig. 3 : P31 |
9.BE.90 | Biraite-(Ce) | Ce2Fe2+(Si2O7)(CO3) | Mon. 2/m : P21/b |
9.BE.92 | Cervandonite-(Ce) | (Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH) | Trig. 3m : R3m |
9.BE.95 | Batisivite | BaV3+8Ti6(Si2O7)O22 | Tric. 1 : P1 |
Related Minerals - Dana Grouping (8th Ed.)
56.2.4.1 | Baghdadite | Ca3(Zr,Ti)(Si2O7)O2 | Mon. |
56.2.4.2 | Burpalite | Na2CaZr(Si2O7)F2 | Mon. |
56.2.4.3 | Cuspidine | Ca4(Si2O7)(F,OH)2 | Mon. 2/m : P21/b |
56.2.4.4 | Låvenite | (Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2 | Mon. 2/m : P21/b |
56.2.4.5 | Wöhlerite | NaCa2(Zr,Nb)(Si2O7)(O,OH,F)2 | Mon. 2 : P21 |
56.2.4.6 | Niocalite | (Ca,Nb)4(Si2O7)(O,OH,F)2 | Mon. |
56.2.4.7 | Hiortdahlite | (Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 | Tric. |
56.2.4.8 | Rosenbuschite | Na6Ca6Zr3Ti(Si2O7)4O2F6 | Tric. 1 : P1 |
56.2.4.9 | Hainite-(Y) | Na2Ca4(Y,REE)Ti(Si2O7)2OF3 | Tric. 1 : P1 |
56.2.4.11 | Jennite | Ca9(Si3O9)2(OH)8 · 8H2O | Tric. |
56.2.4.12 | Komarovite | (Ca,Mn)Nb2[O3|Si2O7] · 3.5H2O | Orth. |
56.2.4.13 | Natrokomarovite | (Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2O | Orth. |
56.2.4.14 | Suolunite | Ca2(H2Si2O7) · H2O | Orth. |
56.2.4.15 | Mongolite | Ca4Nb6Si5O24(OH)10 · nH2O | Tet. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
14.9.1 | Natisite | Na2Ti(SiO4)O | Tet. |
14.9.2 | Lorenzenite | Na2Ti2(Si2O6)O3 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
14.9.3 | Lintisite | LiNa3Ti2(Si2O6)2O2 · 2H2O | Mon. |
14.9.4 | Davanite | K2TiSi6O15 | Tric. |
14.9.5 | Kazakovite | Na6Mn2+Ti(Si6O18) | Trig. |
14.9.6 | Titanite | CaTi(SiO4)O | Mon. 2/m : P21/b |
14.9.7 | Ohmilite | Sr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O | Mon. |
14.9.8 | Lamprophyllite | (Na,Mn2+)3(Sr,Na)2(Ti,Fe3+)3(Si2O7)2O2(OH,O,F)2 | Mon. |
14.9.9 | Benitoite | BaTi(Si3O9) | Hex. 6 m2 : P62c |
14.9.10 | Batisite | BaNaNaTi2(Si4O12)O2 | Orth. |
14.9.11 | Fresnoite | Ba2Ti(Si2O7)O | Tet. |
14.9.12 | Joaquinite-(Ce) | NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2O | Mon. 2 : B2 |
14.9.13 | Orthojoaquinite-(Ce) | NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2O | |
14.9.14 | Strontiojoaquinite | Sr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2O | Mon. |
14.9.15 | Bario-orthojoaquinite | (Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2O | Orth. |
14.9.16 | Strontio-orthojoaquinite | (Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O | Orth. |
14.9.17 | Bafertisite | Ba2Fe2+4Ti2(Si2O7)2O2(OH)2F2 | Tric. |
14.9.18 | Hejtmanite | Ba2(Mn2+,Fe2+)4Ti2(Si2O7)2O2(OH)2F2 | Tric. 1 |
14.9.19 | Delindeite | (Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2O | Mon. |
14.9.20 | Barytolamprophyllite | (Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F) | Mon. |
14.9.21 | Trimounsite-(Y) | Y2Ti2(SiO4)O5 | Mon. |
14.9.22 | Perrierite-(Ce) | Ce4MgFe3+2Ti2(Si2O7)2O8 | Mon. 2/m : P21/b |
14.9.23 | Chevkinite | (Ce,Ca,Th)4(Fe,Mn)2(Ti,Fe)3[Si2O7]2O8 | |
14.9.24 | Strontiochevkinite | (Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8 | Mon. |
14.9.25 | Tisinalite | Na3H3(Mn,Ca,Fe)TiSi6(O,OH)18 · 2H2O | Trig. |
14.9.26 | Neptunite | Na2KLiFe2+2Ti2Si8O24 | Mon. m : Bb |
14.9.27 | Manganoneptunite | Na2KLiMn2+2Ti2Si8O24 | Mon. |
14.9.28 | Kupletskite | (K,Na)3(Mn,Fe)7Ti2Si8O26(OH)4F | Tric. |
14.9.29 | Astrophyllite | K2NaFe2+7Ti2Si8O28(OH)4F | Tric. 1 : P1 |
14.9.30 | Hydroastrophyllite | (H3O,K,Ca)3(Fe,Mn)5-65Ti2Si8(O,OH)31 | Tric. |
14.9.31 | Lobanovite | K2Na(Fe2+4Mg2Na)Ti2(Si4O12)2O2(OH)4 | Mon. 2/m : B2/m |
14.9.32 | Baratovite | KCa7(Ti,Zr)2Li3Si12O36F2 | Mon. 2/m : B2/b |
14.9.34 | Aenigmatite | Na4[Fe2+10Ti2]O4[Si12O36] | Tric. 1 : P1 |
14.9.35 | Schorlomite | Ca3(Ti,Fe3+)2((Si,Fe3+)O4)3 | Iso. |
14.9.36 | Tinaksite | K2Na(Ca,Mn2+)2Ti[O|Si7O18(OH)] | Tric. |
14.9.38 | Koashvite | Na6(Ca,Mn)(Ti,Fe)Si6O18 · H2O | Orth. |
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.
References for Janhaugite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Raade, G., Mladeck, M.H. (1983) Janhaugite, Na3Mn3Ti2Si4O15(OH,F,O)3, a new mineral from Norway. American Mineralogist: 68: 1216-1219.
Annehed, H., Fälth, L., Raade, G. (1985) The crystal structure of janhaugite, a sorosilicate of cuspidine family. Neues Jahrbuch für Mineralogie, Monatshefte, 1985: 7-18.
Internet Links for Janhaugite
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Localities for Janhaugite
Locality List




All localities listed without proper references should be considered as questionable.
Norway (TL) | |
| Raade, G. & Mladeck, M. H.(1983): Janhaugite,.. A new mineral from Norway. American Mineralogist 68, 1216-1219 |
Russia | |
| www.koeln.netsurf.de/~w.steffens/khib.htm |
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Gjerdingselva, Nordmarka, Lunner, Oppland, Norway