Classification of Janhaugite |
| IMA status: | Approved |
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| Strunz 8th edition ID: | 8/C.11-12
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| Nickel-Strunz 10th (pending) edition ID: | 9.BE.17
9 : SILICATES (Germanates) B : Sorosilicates E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination |
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| Dana 8th edition ID: | 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 |
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| Hey's CIM Ref.: | 14.9.37
14 : Silicates not Containing Aluminum 9 : Silicates of Ti |
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| mindat.org URL: | http://www.mindat.org/min-2074.html Please feel free to link to this page. |
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Type Occurrence of Janhaugite |
| Type Locality: | Gjerdingselva (Gjerdingen), Nordmarka, Lunner, Oppland, Norway |
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| 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. |
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| Place of Conservation of Type Material: | Mineralogical-Geological Museum, University of Oslo, Norway. |
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| Year of Discovery: | 1981 |
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| Geological Setting of type material: | As a rock-forming constituent of ekerite (a Na-rich alkali feldspar granite), and in miarolitic cavities. |
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| Associated Minerals at type locality: | |
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Physical Properties of Janhaugite |
| Lustre: | Vitreous |
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| Diaphaneity (Transparency): | Transparent |
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| Colour: | Reddish brown, golden-brown |
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| Streak: | Light brown |
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| Hardness (Mohs): | 5 |
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| Tenacity: | Very brittle |
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| Cleavage: | Distinct/Good On(010) |
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| Density (measured): | 3.6 g/cm3 |
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| Density (calculated): | 3.71 g/cm3 |
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Crystallography of Janhaugite |
| Crystal System: | Monoclinic |
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| Class (H-M): | 2/m - Prismatic |
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| Space Group: | P21/m (P1 1 21/m) [P21/m] {P1 21/m 1} |
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| Cell Parameters: | a = 10.66Å, b = 9.78Å, c = 13.93Å β = 107.82° |
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| Ratio: | a:b:c = 1.09 : 1 : 1.424 |
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| Unit Cell Volume: | V 1,382.59 ų (Calculated from Unit Cell) |
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| Z: | 4 |
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| Morphology: | Subhedral grains and lamellar aggregates and sprays of prismatic crystals in miarolitic cavities. Crystals often curved and bent. Striated along [001]. |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 3.920 | | (40) | | 3.202 | | (60) | | 2.839 | | (100) | | 2.833 | | (90) | | 2.782 | | (90) | | 2.742 | | (40) | | 1.744 | | (50) |
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| Comments: | Gjerdingen, Norway. |
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Optical Data of Janhaugite |
| Type: | Biaxial (+) |
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| RI values: | nα = 1.770 nβ = 1.828 nγ = 1.910 |
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| 2V: | Measured: 80° , Calculated: 84° |
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| Maximum Birefringence: | δ = 0.140
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Very High |
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| Dispersion: | r > v distinct |
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| Pleochroism: | Weak |
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| Comments: | X = nearly colourless
Y = beige |
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Chemical Properties of Janhaugite |
| Formula: | | (Na,Ca) | | (Mn,Fe) | | (Ti,Zr,Nb) | | Si | | O | | (OH,F,O) | | |
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| Essential elements: | H, Mn, Na, O, Si, Ti |
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| All elements listed in formula: | Ca, F, Fe, H, Mn, Na, Nb, O, Si, Ti, Zr |
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| Common Impurities: | Ca,Fe,Zr,Nb,Ta,K,H2O |
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Relationship of Janhaugite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | | 9.BE.02 | Wadsleyite | | | 9.BE.05 | Hennomartinite | | | 9.BE.05 | Lawsonite | | | 9.BE.05 | Noelbensonite | | | 9.BE.05 | Itoigawaite | | | 9.BE.07 | Ilvaite | | | 9.BE.07 | Manganilvaite | | | 9.BE.10 | Suolunite | | | 9.BE.12 | Jaffeite | | | 9.BE.15 | Fresnoite | | | 9.BE.17 | Baghdadite | | | 9.BE.17 | Burpalite | | | 9.BE.17 | Cuspidine | | | 9.BE.17 | Hiortdahlite | | (Ca,Na) | | (Zr,Ti)Si | | O | | (O,OH,F) | | |
| | 9.BE.17 | Låvenite | | (Na,Ca) | | (Mn | | ,Fe | | )(Zr,Ti)[(O,OH,F) | | |Si | | O | | ] |
| | 9.BE.17 | Niocalite | | | 9.BE.17 | Normandite | | NaCa(Mn,Fe)(Ti,Nb,Zr)[(O,F) | | |Si | | O | | ] |
| | 9.BE.17 | Wöhlerite | | NaCa | | (Zr,Nb)[(O,OH,F) | | |Si | | O | | ] |
| | 9.BE.17 | Hiortdahlite I | | | 9.BE.17 | IMA2005-005a | | | 9.BE.20 | Mosandrite | | (Ca,Na,Ce) | | (Ti,Zr) | | [F | | |(OH) | | |SiO | | |(Si | | O | | ) | | ] |
| | 9.BE.20 | Nacareniobsite-(Ce) | | Na | | Ca | | (Ce,La,Nd)Nb[F | | |O|(Si | | O | | ) | | ] |
| | 9.BE.20 | Rinkite | | Na(Na,Ca) | | (Ca,Ce) | | Ti[F | | |(O,F) | | |(Si | | O | | ) | | ] |
| | 9.BE.22 | Götzenite | | | 9.BE.22 | Hainite | | | 9.BE.22 | Rosenbuschite | | | 9.BE.22 | Kochite | | (Na,Ca) | | Ca | | (Mn,Ca)ZrTi[(F,O) | | |(Si | | O | | ) | | ] |
| | 9.BE.23 | Dovyrenite | | | 9.BE.25 | Barytolamprophyllite | | (Ba,Na) | | (Na,Ti,Fe | | ) | | Ti | | [O|(OH,F)|Si | | O | | ] | | |
| | 9.BE.25 | Ericssonite | | | 9.BE.25 | Lamprophyllite | | (Sr,K,Ba) | | (Na,Ti,Mn | | ,Fe | | ) | | Ti | | [O|(O,OH,F)|Si | | O | | ] | | |
| | 9.BE.25 | Orthoericssonite | | | 9.BE.25 | Seidozerite | | | 9.BE.25 | Nabalamprophyllite | | Na | | (Ba,Na) | | Ti | | [O|(OH,F)|Si | | O | | ] | | |
| | 9.BE.25 | Grenmarite | | (Zr,Mn) | | (Zr,Ti)(Mn,Na)(Na,Ca) | | (Si | | O | | ) | | (O,F) | | |
| | 9.BE.27 | Murmanite | | | 9.BE.30 | Epistolite | | | 9.BE.32 | Lomonosovite | | | 9.BE.35 | Vuonnemite | | | 9.BE.37 | Sobolevite | | Na | | Ca(NaCaMn)Ti | | (Si | | O | | ) | | (PO | | ) | | O | | F | | |
| | 9.BE.40 | Innelite | | Na | | (Ba,K) | | (Mg,Ca,Fe)Ti | | Si | | O | | (OH,F) | | SO | | |
| | 9.BE.40 | Phosphoinnelite | | Ba | | Na | | Ti | | [(O,F) | | |(PO | | ,SO | | ) | | |Si | | O | | ] |
| | 9.BE.42 | Yoshimuraite | | | 9.BE.45 | Quadruphite | | | 9.BE.47 | Polyphite | | | 9.BE.50 | Bornemanite | | | 9.BE.50 | Shkatulkaite | | Na | | Mn | | Ti | | Nb | | [(OH) | | |F|(Si | | O | | ) | | ] · 12H | | O |
| | 9.BE.50 | Shkatulkalite | | | 9.BE.50 | Bykovaite | | BaNa(Na,Ti) | | [(OH,F) | | |(Ti,Nb) | | Si | | O | | (O,OH) | | ] · 3H | | O |
| | 9.BE.55 | Bafertisite | | Ba(Fe | | ,Mn | | ) | | Ti[O|(O,OH) | | |Si | | O | | ] |
| | 9.BE.55 | Hejtmanite | | Ba(Mn | | ,Fe | | ) | | Ti[O|(OH,F) | | |Si | | O | | ] |
| | 9.BE.55 | Nechelyustovite | | (Ba,Na) | | {(Na,Ti,Mn) | | [(Ti,Nb) | | (OH) | | Si | | O | | ](OH,O,F) | | } · 3H | | O |
| | 9.BE.60 | Delindeite | | (Na,K) | | (Ba,Ca) | | (Ti,Fe,Al) | | Si | | O | | (OH) | | |
| | 9.BE.65 | Bussenite | | | 9.BE.67 | Jinshajiangite | | (Na,Ca)(Ba,K)(Fe,Mn) | | Ti | | Si | | O | | (F,O,OH) | | |
| | 9.BE.67 | Perraultite | | (Na,Ca)(Ba,K)(Mn,Fe) | | (Ti,Nb) | | Si | | O | | (OH,F,O) | | |
| | 9.BE.67 | Surkhobite | | (Ba,K) | | CaNaMn | | Ti | | (Si | | O | | ) | | O | | (F,OH,O) | | |
| | 9.BE.70 | Karnasurtite-(Ce) | | (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si,P) | | O | | (OH) | | ·3H | | O |
| | 9.BE.70 | Perrierite-(Ce) | | (Ce,Ca,Th) | | (Mg,Fe | | ) | | (Ti,Fe | | ) | | [O | | |Si | | O | | ] | | |
| | 9.BE.70 | Strontiochevkinite | | (Sr,La,Ce,Ca) | | Fe | | (Ti,Zr) | | Ti | | [O | | |Si | | O | | ] | | |
| | 9.BE.70 | Chevkinite-(Ce) | | (Ce,La,Ca,Na,Th) | | (Fe | | ,Mg)(Fe | | ,Ti,Fe | | ) | | (Ti,Fe | | ,Nb) | | [O | | |Si | | O | | ] | | |
| | 9.BE.70 | Polyakovite-(Ce) | | (Ce,Ca) | | (Mg,Fe | | )(Cr | | ,Fe | | ) | | (Ti,Nb) | | [O | | |Si | | O | | ] | | |
| | 9.BE.70 | Rengeite | | | 9.BE.70 | Matsubaraite | | | 9.BE.70 | Dingdaohengite-(Ce) | | | 9.BE.70 | Maoniupingite-(Ce) | | (REE,Ca) | | (Fe | | ,Ti,Fe | | ,[])(Ti,Fe | | ,Fe | | ,Nb) | | [O | | |Si | | O | | ] | | |
| | 9.BE.70 | Perrierite-(La) | | (La,Ce, Ca) | | (Fe,Mn | | ,Mg)(Ti,Fe) | | [O | | |Si | | O | | ] | | |
| | 9.BE.72 | Fersmanite | | | 9.BE.75 | Belkovite | | | 9.BE.77 | Nasonite | | | 9.BE.80 | Kentrolite | | | 9.BE.80 | Melanotekite | | | 9.BE.82 | Tilleyite | | | 9.BE.85 | Killalaite | | | 9.BE.87 | Stavelotite-(La) | | (La,Nd,Ca) | | Mn | | Cu(Mn | | ,Fe | | ,Mn | | ) | | [O | | |Si | | O | | ] | | |
| | 9.BE.90 | Biraite-(Ce) | |
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| Related Minerals - Hey's Index Grouping: | | 14.9.1 | Natisite | | | 14.9.2 | Lorenzenite | | | 14.9.3 | Lintisite | | | 14.9.4 | Davanite | | | 14.9.5 | Kazakovite | | | 14.9.6 | Titanite | | | 14.9.7 | Ohmilite | | Sr | | (Ti,Fe | | )[(O,OH)|(Si | | O | | ) | | ] · 2-3H | | O |
| | 14.9.8 | Lamprophyllite | | (Sr,K,Ba) | | (Na,Ti,Mn | | ,Fe | | ) | | Ti | | [O|(O,OH,F)|Si | | O | | ] | | |
| | 14.9.9 | Benitoite | | | 14.9.10 | Batisite | | | 14.9.11 | Fresnoite | | | 14.9.12 | Joaquinite-(Ce) | | | 14.9.13 | Orthojoaquinite-(Ce) | | | 14.9.14 | Strontiojoaquinite | | Sr | | Ba | | (Na,Fe) | | Ti | | Si | | O | | (O,OH) | | ·H | | O |
| | 14.9.15 | Bario-orthojoaquinite | | | 14.9.16 | Strontio-orthojoaquinite | | Sr | | Ba | | (Na,Fe) | | Ti | | Si | | O | | (O,OH) | | ·H | | O |
| | 14.9.17 | Bafertisite | | Ba(Fe | | ,Mn | | ) | | Ti[O|(O,OH) | | |Si | | O | | ] |
| | 14.9.18 | Hejtmanite | | Ba(Mn | | ,Fe | | ) | | Ti[O|(OH,F) | | |Si | | O | | ] |
| | 14.9.19 | Delindeite | | (Na,K) | | (Ba,Ca) | | (Ti,Fe,Al) | | Si | | O | | (OH) | | |
| | 14.9.20 | Barytolamprophyllite | | (Ba,Na) | | (Na,Ti,Fe | | ) | | Ti | | [O|(OH,F)|Si | | O | | ] | | |
| | 14.9.21 | Trimounsite-(Y) | | | 14.9.22 | Perrierite-(Ce) | | (Ce,Ca,Th) | | (Mg,Fe | | ) | | (Ti,Fe | | ) | | [O | | |Si | | O | | ] | | |
| | 14.9.23 | Chevkinite | | (Ca,Ce,Th) | | (Fe,Mn) | | (Ti,Fe) | | Si | | O | | |
| | 14.9.24 | Strontiochevkinite | | (Sr,La,Ce,Ca) | | Fe | | (Ti,Zr) | | Ti | | [O | | |Si | | O | | ] | | |
| | 14.9.25 | Tisinalite | | Na | | H | | (Mn,Ca,Fe)TiSi | | (O,OH) | | ·2H | | O |
| | 14.9.26 | Neptunite | | | 14.9.27 | Manganoneptunite | | | 14.9.28 | Kupletskite | | | 14.9.29 | Astrophyllite | | | 14.9.30 | Hydroastrophyllite | | (H | | O,K,Ca) | | (Fe,Mn) | | Ti | | Si | | (O,OH) | | |
| | 14.9.31 | Magnesioastrophyllite | | (Na,K) | | Mg | | (Fe,Fe,Mn) | | Ti | | Si | | O | | (O,OH,F) | | |
| | 14.9.32 | Baratovite | | | 14.9.34 | Aenigmatite | | | 14.9.35 | Schorlomite | | | 14.9.36 | Tinaksite | | | 14.9.38 | Koashvite | |
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Other Names for Janhaugite |
| Synonyms: | |
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| German names: | |
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| Russian names: | |
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| Spanish names: | |
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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. |
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References for Janhaugite |
| Reference List: | Raade, G. and 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.
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Internet Links for Janhaugite |
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| External Links: | Look for Janhaugite on WebmineralLook for Janhaugite on Athena MineralogyLook for Janhaugite on WikipediaLook for Janhaugite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Janhaugite in the Natural History Museum (London) online catalogueJanhaugite details from Handbook of Mineralogy (PDF) |
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Localities for Janhaugite |