Classification of Bobfergusonite |
| IMA status: | Approved 1984 |
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| Strunz 8th edition ID: | 7/A.06-20
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| Nickel-Strunz 10th (pending) edition ID: | 8.AC.15
8 : PHOSPHATES, ARSENATES, VANADATES A : Phosphates, etc. without additional anions, without H2O C : With medium-sized and large cations |
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| Dana 8th edition ID: | 38.2.4.5
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES 2 : (AB)5(XO4)3 |
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| Hey's CIM Ref.: | 19.12.58
19 : Phosphates 12 : Phosphates of Mn |
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| mindat.org URL: | http://www.mindat.org/min-700.html Please feel free to link to this page. |
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Type Occurrence of Bobfergusonite |
| Type Locality: | Gottcha Claim, Cross Lake, Manitoba, Canada |
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| Place of Conservation of Type Material: | Royal Ontario Museum, Ottawa, Canada M42687 |
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| Year of Discovery: | 1986 |
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| Geological Setting of type material: | Primary mineral in intermediate zone of granitic pegmatite enriched in Mn and F |
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Physical Properties of Bobfergusonite |
| Lustre: | Resinous |
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| Diaphaneity (Transparency): | Transparent |
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| Comment: | Bronzy on parting planes. |
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| Colour: | Green-brown to red-brown |
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| Streak: | Yellow-brown |
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| Hardness (Mohs): | 4 |
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| Tenacity: | Brittle |
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| Cleavage: | Perfect Perfect on {010} |
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| Parting: | Parting on {100} |
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| Density (measured): | 3.54(1) g/cm3 |
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| Density (calculated): | 3.57 g/cm3 |
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Crystallography of Bobfergusonite |
| Crystal System: | Monoclinic |
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| Class (H-M): | 2/m - Prismatic |
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| Cell Parameters: | a = 12.77Å, b = 12.48Å, c = 11.03Å β = 97.34(13)° |
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| Ratio: | a:b:c = 1.023 : 1 : 0.884 |
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| Unit Cell Volume: | V 1,743.44 ų (Calculated from Unit Cell) |
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| Z: | 4 |
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| Morphology: | Equant anhedral crystals to 1cm and nodular aggregates. |
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Optical Data of Bobfergusonite |
| Type: | Biaxial (+) |
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| RI values: | nα = 1.694(1) nβ = 1.698(1) nγ = 1.715(2) |
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| 2V: | Measured: 46° , Calculated: 52° |
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| Maximum Birefringence: | δ = 0.021
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | High |
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| Dispersion: | relatively strong |
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| Pleochroism: | Visible |
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| Comments: | X=Y= Yellow-orange
Z= Orange |
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Chemical Properties of Bobfergusonite |
| Formula: | |
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| Essential elements: | Al, Fe, Mn, Na, O, P |
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| All elements listed in formula: | Al, Fe, Mn, Na, O, P |
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| Empirical Formula: | |
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Relationship of Bobfergusonite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | | 8.AC.05 | Howardevansite | | | 8.AC.10 | Alluaudite | | (Na,Ca)Mn | | (Fe | | ,Mn | | ,Fe | | ,Mg) | | (PO | | ) | | |
| | 8.AC.10 | Arseniopleite | | | 8.AC.10 | Caryinite | | (Na,Pb)(Ca,Na)((Ca,Mn | | )(Mn | | ,Mg,Fe | | )[AsO | | ] | | |
| | 8.AC.10 | Ferroalluaudite | | | 8.AC.10 | Hagendorfite | | | 8.AC.10 | Johillerite | | | 8.AC.10 | Maghagendorfite | | | 8.AC.10 | Nickenichite | | | 8.AC.10 | Varulite | | | 8.AC.10 | Ferrohagendorfite | | | 8.AC.10 | Bradaczekite | | | 8.AC.10 | Yazganite | | | 8.AC.10 | Ferro-alluaudite | | | 8.AC.15 | Ferrowyllieite | | (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO | | ) | | |
| | 8.AC.15 | Qingheiite | | | 8.AC.15 | Rosemaryite | | (Na,Ca,Mn)(Mn,Fe | | )(Fe | | ,Mg)Al(PO | | ) | | |
| | 8.AC.15 | Wyllieite | | (Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO | | ) | | |
| | 8.AC.15 | Ferrorosemaryite | | | 8.AC.20 | Marićite | | | 8.AC.25 | Berzeliite | | | 8.AC.25 | Manganberzeliite | | | 8.AC.25 | Palenzonaite | | | 8.AC.25 | Schäferite | | | 8.AC.30 | Brianite | | | 8.AC.35 | Vitusite-(Ce) | | | 8.AC.40 | Olgite | | | 8.AC.40 | Bario-olgite | | | 8.AC.45 | Strontiowhitlockite | | | 8.AC.45 | Whitlockite | | | 8.AC.45 | Merrillite | | | 8.AC.45 | Tuite | | | 8.AC.45 | Ferromerrillite | | | 8.AC.50 | Chladniite | | {Ca}{Na | | }{Ca | | Na | | }{(Mg,Fe | | ) | | }[PO | | ] | | |
| | 8.AC.50 | Fillowite | | {Mn | | }{Na | | }{Ca | | Na | | }{(Mn | | ,Fe | | ) | | }[PO | | ] | | |
| | 8.AC.50 | Johnsomervilleite | | {Ca}{Na | | [ ] | | }{Ca | | Na | | }{(Fe | | ,Mg,Mn | | ) | | }[PO | | ] | | |
| | 8.AC.50 | Galileiite | | | 8.AC.50 | Stornesite-(Y) | | {(Y, Ca)}{Na | | [ ] | | }{(Ca,Na) | | }{(Mg,Fe | | ) | | }[PO | | ] | | |
| | 8.AC.50 | IMA2006-006 | | | 8.AC.55 | Harrisonite | | | 8.AC.60 | Kosnarite | | | 8.AC.65 | Panethite | | | 8.AC.70 | Stanfieldite | | | 8.AC.75 | Ronneburgite | | | 8.AC.80 | Tillmannsite | | | 8.AC.85 | Filatovite | |
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| Related Minerals - Hey's Index Grouping: | | 19.12.1 | Metaswitzerite | | | 19.12.2 | Bermanite | | | 19.12.3 | Natrophilite | | | 19.12.4 | Sidorenkite | | | 19.12.5 | Niahite | | | 19.12.6 | Robertsite | | | 19.12.7 | Pararobertsite | | | 19.12.8 | Sinkankasite | | | 19.12.9 | Mangangordonite | | | 19.12.10 | Heterosite | | | 19.12.11 | Purpurite | | | 19.12.12 | Wolfeite | | | 19.12.13 | Triploidite | | | 19.12.14 | Lipscombite | | | 19.12.15 | Frondelite | | | 19.12.16 | Rockbridgeite | | | 19.12.17 | Kryzhanovskite | | | 19.12.18 | Landesite | | Mn | | Fe | | [(OH) | | |(PO | | ) | | ] · (3-x)H | | O |
| | 19.12.19 | Phosphoferrite | | | 19.12.20 | Reddingite | | | 19.12.21 | Earlshannonite | | | 19.12.22 | Hureaulite | | | 19.12.23 | Switzerite | | | 19.12.24 | Laueite | | | 19.12.25 | Pseudolaueite | | | 19.12.26 | Strunzite | | | 19.12.27 | Stewartite | | | 19.12.28 | Alluaudite | | (Na,Ca)Mn | | (Fe | | ,Mn | | ,Fe | | ,Mg) | | (PO | | ) | | |
| | 19.12.29 | Ferroalluaudite | | | 19.12.30 | Fillowite | | {Mn | | }{Na | | }{Ca | | Na | | }{(Mn | | ,Fe | | ) | | }[PO | | ] | | |
| | 19.12.31 | Johnsomervilleite | | {Ca}{Na | | [ ] | | }{Ca | | Na | | }{(Fe | | ,Mg,Mn | | ) | | }[PO | | ] | | |
| | 19.12.32 | Wicksite | | NaCa | | (Fe | | ,Mn | | ) | | MgFe | | [PO | | ] | | · 2H | | O |
| | 19.12.33 | Dickinsonite-(KMnNa) | | {KNa}{Mn | | [ ]}{Ca}{Na | | }{Mn | | }{Al}[(OH) | | |(PO | | ) | | ] |
| | 19.12.34 | Sarcopside | | | 19.12.35 | Ludlamite | | | 19.12.36 | Graftonite | | | 19.12.37 | Wilhelmvierlingite | | | 19.12.38 | Fairfieldite | | | 19.12.39 | Beusite | | | 19.12.40 | Messelite | | | 19.12.41 | Jahnsite-(CaMnFe) | | | 19.12.42 | Jahnsite-(CaMnMn) | | | 19.12.43 | Jahnsite-(CaMnMg) | | CaMn | | (Mg,Fe | | ) | | Fe | | (PO | | ) | | (OH) | | · 8H | | O |
| | 19.12.44 | Keckite | | (Ca,Mg)(Mn | | ,Zn) | | Fe | | (PO | | ) | | (OH) | | · 2H | | O |
| | 19.12.45 | Stanfieldite | | | 19.12.46 | Laubmannite | | | 19.12.47 | Zodacite | | | 19.12.48 | Hagendorfite | | | 19.12.49 | Maghagendorfite | | | 19.12.50 | Varulite | | | 19.12.51 | Griphite | | Na | | Li | | Ca | | (Mn | | ,Fe | | ,Mg) | | Al | | [(F,OH)|(PO | | ) | | ] | | |
| | 19.12.52 | Attakolite | | (Ca,Sr)Mn(Al,Fe) | | [(OH) | | |(SiO | | ,PO | | )|(HPO | | ,PO | | ) | | ] |
| | 19.12.53 | Arrojadite-(KFe) | | {KNa}{Fe | | [ ]}{Ca}{Na | | [ ]}{Fe | | }{Al}[(OH) | | |HPO | | |(PO | | ) | | ] |
| | 19.12.54 | Lun'okite | | (Mn,Ca)(Mg,Fe,Mn)Al(PO | | ) | | OH·4H | | O |
| | 19.12.55 | Eosphorite | | | 19.12.56 | Ernstite | | (Mn | | ,Fe | | )Al[(OH,O) | | |PO | | ] · H | | O |
| | 19.12.57 | Childrenite | | | 19.12.59 | Qingheiite | | | 19.12.60 | Whiteite-(CaFeMg) | | Ca(Fe | | ,Mn | | )Mg | | Al | | (PO | | ) | | (OH) | | · 8H | | O |
| | 19.12.61 | Whiteite-(CaMnMg) | | | 19.12.62 | Whiteite-(MnFeMg) | | (Mn | | ,Ca)(Fe | | ,Mn | | )Mg | | Al | | (PO | | ) | | (OH) | | · 8H | | O |
| | 19.12.63 | Rittmannite | | (Mn | | ,Ca)Mn | | (Fe | | ,Mn | | ,Mg) | | (Al,Fe | | ) | | (PO | | ) | | (OH) | | · 8H | | O |
| | 19.12.64 | Zanazziite | | Ca | | (Mg,Fe)(Mg,Fe,Al) | | Be | | [(OH) | | |(PO | | ) | | ] · 6H | | O |
| | 19.12.65 | Samuelsonite | | (Ca,Ba)Ca | | Fe | | Mn | | Al | | [(OH) | | |(PO | | ) | | ] |
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Other Names for Bobfergusonite |
| 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 Bobfergusonite |
| Reference List: | American Mineralogist: 73: 190.
Canadian Mineralogist: 24: 605-614.
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Internet Links for Bobfergusonite |
| Search Engines: |
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| External Links: | Look for Bobfergusonite on WebmineralLook for Bobfergusonite on Athena MineralogyLook for Bobfergusonite on WikipediaLook for Bobfergusonite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Bobfergusonite in the Natural History Museum (London) online catalogue |
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| Mineral Dealers: | Top quality minerals from Kristalle of CaliforniaHigh-end worldwide specimens & outstanding customer serviceWright's Rock Shop - excellent mineral specimens since 1970Buy fine minerals and gemstones from Pala InternationalLapis Mineral MagazinSearch for Bobfergusonite at Thames Valley MineralsBuy Fine Minerals from mineralsweb.come-Rocks - Mineral Auctions and Salesrare and unusual minerals mainly crystallizedThe Arkenstone - Fine MineralsSearch for Bobfergusonite on minvision.comFind Bobfergusonite on www.crystalclassics.co.uk |
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Localities for Bobfergusonite |