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![Relationship between the refined unit-cell volume and averaged <M–O> distance in kristiansenite-group minerals. Symbols: full circle – kristiansenite from the Heftetjern pegmatite (Ferraris et al., 2001); diamonds – kristiansenite, kozłowskiite and silesiaite from Szklarska Poręba (Evans et al., 2018; this study). Abbreviations of the mineral names according to Warr, 2021).]()
![Silesiaite and kristiansenite from the Häiviäntien pegmatite: (a) a crystal of silesiaite, ~0.7 mm in size, in a void formed by quartz and spessartine, (b–c) BSE images of silesiaite from the pegmatite, (d) inclusions of (Nb, Ta)-bearing kristiansenite in a calciomicrolite intergrown with cassiterite, stokesite and titanite. Mineral name abbreviations: Bvn – bavenite, Cst – cassiterite, Kse – kristiansenite, Qz – quartz, Sks – stokesite, Sps – spessartine, Ssa – silesiaite and Ttn – titanite (Warr, 2021); Cmic – a calciomicrolite.]()
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![Raman spectra of kozłowskiite (Kzw; green and blue) compared to the spectrum of silesiaite (Ssa, magenta) and kristiansenite (Kse; black; RRUFF database R090022, https://rruff.info/). Kozłowskiite and silesiaite originate from the Szklarska Poręba Huta quarry, kristiansenite from the Heftetjern pegmatite, Tørdal, Telemark, Norway.]()
![(a–f) Representative BSE images of zoned kristiansenite–silesiaite crystals from Szklarska Poręba (holotype # SP5). The narrow frame in figure (b) indicates the place of extraction of a single crystal for structural studies. Mineral name abbreviations: Kse – kristiansenite, Kzw – kozłowskiite, Ssa –silesiaite (Warr, 2021). White inclusions are cassiterite or fersmite.]()
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![A relationship between the refined unit-cell volume and <M–O> distance in silesiaite (this study), kristiansenite (Ferraris et al., 2001; Evans et al., 2018), and kozłowskiite (Pieczka et al., 2022b). Mineral name abbreviations: Kse – kristiansenite, Kzw – kozłowskiite, Ssa –silesiaite (Warr, 2021). Other abbreviations: PL – type silesiaite from Szklarska Poręba, Poland; FIN – silesiaite from Häiviäntien, Finland.]()
![BSE images of the mineral assemblages. (a) Euhedral zircon associated with columbite-(Mn) and fersmite, fluorcalciomicrolite, thortveitite and titanite. (b) and (c) Corroded relics of columbite replaced by fersmite and overgrown by euhedral crystals of nioboheftetjernite. (d) Complexly altered fluorcalciomicrolite with rare thin bright veinlets of Pb-enriched fluorcalciomicrolite. The microlite fills open spaces in older mineralisation dominated by columbite-(Mn) and fersmite (dark grey). Note the feeder structure connecting two microlite aggregates. (e) Kristiansenite veinlet traversing the columbite-(Mn) + fersmite aggregates. Note also a small brighter crystal of nioboheftetjernite. (f) Oscillatory zoned grain of titanite. Zrn – zircon, Clb – columbite-(Mn), Fsm – fersmite, Mic – fluorcalciomicrolite, Tvt – thortveitite, Ttn – titanite, Kse – kristiansenite, Nhef – nioboheftetjernite.]()
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![BSE image of sample H03/01b, showing in close-up the replacement of thortveitite by kristiansenite.]()
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![BSE image of sample H03/01b. Thortveitite is penetrated by scandian milarite and bazzite and is subsequently replaced by kristiansenite.]()
![First thumbnail for: Importance of Ca-rich fluids for the formation of ...]()
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![Raman spectra of silesiaite from Szklarska Poręba (Ssa; magenta) and from Häiviäntien (Ssa; green) compared to the spectrum of kristiansenite (Kse; black; RRUFF database R090022, https://rruff.info/) and kozłowskiite (Kzw; blue).]()
![Back-scattered electron image of type kozłowskiite (Kzw) (specimen number MMUWr IV7929). The Kzw band is overgrown by kristiansenite (Kse) and silesiaite (all other zones that are not labelled). White patches are inclusions of cassiterite and fersmite. Abbreviations of mineral names according to Warr (2021).]()
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1-20 OF 51 RESULTS FOR
kristiansenite
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Journal Article
Silesiaite, ideally Ca 2 Fe 3+ Sn(Si 2 O 7 )(Si 2 O 6 OH), a new species in the kristiansenite group: crystal chemistry and structure of holotype silesiaite from Szklarska Poręba, Poland, and Sc-free silesiaite from Häiviäntien, Finland Available to Purchase
Journal: Mineralogical Magazine
Published: 25 January 2023
Mineralogical Magazine (2023) 87 (2): 271–283.
... 1– M 4 site occupancies following a decrease of the < M –O> distance. Among the minerals of the kristiansenite group, Sc-free silesiaite from the Häiviäntien pegmatite has the smallest average radius of M -site cations and a unit-cell volume that increases proportionally to the (Fe 2+ ± Sc...
FIGURES
Journal Article
Kozłowskiite, ideally Ca 4 Fe 2+ Sn 3 (Si 2 O 7 ) 2 (Si 2 O 6 OH) 2 , a new kristiansenite-type mineral from Szklarska Poręba, Lower Silesia, Poland Available to Purchase
Journal: Mineralogical Magazine
Published: 23 May 2022
Mineralogical Magazine (2022) 86 (3): 507–517.
...Adam Pieczka; Sylwia Zelek-Pogudz; Bożena Gołębiowska; Katarzyna M. Stadnicka; R. James Evans Abstract Kozłowskiite, ideally Ca 4 (Fe 2+ Sn 3 )(Si 2 O 7 ) 2 (Si 2 O 6 OH) 2 , is a new mineral isostructural with kristiansenite and silesiaite, found as a band in the core of a zoned silesiaite...
FIGURES
Image
Relationship between the refined unit-cell volume and averaged < M –O>... Available to Purchase
in Kozłowskiite, ideally Ca 4 Fe 2+ Sn 3 (Si 2 O 7 ) 2 (Si 2 O 6 OH) 2 , a new kristiansenite-type mineral from Szklarska Poręba, Lower Silesia, Poland
> Mineralogical Magazine
Published: 23 May 2022
Fig. 5. Relationship between the refined unit-cell volume and averaged < M –O> distance in kristiansenite-group minerals. Symbols: full circle – kristiansenite from the Heftetjern pegmatite (Ferraris et al ., 2001 ); diamonds – kristiansenite, kozłowskiite and silesiaite from Szklarska
Image
Silesiaite and kristiansenite from the Häiviäntien pegmatite: (a) a crystal... Available to Purchase
in Silesiaite, ideally Ca 2 Fe 3+ Sn(Si 2 O 7 )(Si 2 O 6 OH), a new species in the kristiansenite group: crystal chemistry and structure of holotype silesiaite from Szklarska Poręba, Poland, and Sc-free silesiaite from Häiviäntien, Finland
> Mineralogical Magazine
Published: 25 January 2023
Fig. 2. Silesiaite and kristiansenite from the Häiviäntien pegmatite: (a) a crystal of silesiaite, ~0.7 mm in size, in a void formed by quartz and spessartine, (b–c) BSE images of silesiaite from the pegmatite, (d) inclusions of (Nb, Ta)-bearing kristiansenite in a calciomicrolite intergrown
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Representative compositions of silicates in wt.% and atoms per formula unit... Open Access
in Importance of Ca-rich fluids for the formation of secondary Sc-minerals. An example from a metaluminous pegmatite Kožichovice II, Czech Republic
> Mineralogical Magazine
Published: 01 December 2024
Table 3. Representative compositions of silicates in wt.% and atoms per formula unit (apfu) * Tvt – Thortveitite, Kse – kristiansenite, Ttn – titanite, Zrn – Zircon. * Thortveitite and kristiansenite and zircon data were normalised to 7, 14 and 4 anions pfu. Titanite formula
Image
Raman spectra of kozłowskiite (Kzw; green and blue) compared to the spectru... Available to Purchase
in Kozłowskiite, ideally Ca 4 Fe 2+ Sn 3 (Si 2 O 7 ) 2 (Si 2 O 6 OH) 2 , a new kristiansenite-type mineral from Szklarska Poręba, Lower Silesia, Poland
> Mineralogical Magazine
Published: 23 May 2022
Fig. 2. Raman spectra of kozłowskiite (Kzw; green and blue) compared to the spectrum of silesiaite (Ssa, magenta) and kristiansenite (Kse; black; RRUFF database R090022, https://rruff.info/ ). Kozłowskiite and silesiaite originate from the Szklarska Poręba Huta quarry, kristiansenite from
Image
(a–f) Representative BSE images of zoned kristiansenite–silesiaite crystals... Available to Purchase
in Silesiaite, ideally Ca 2 Fe 3+ Sn(Si 2 O 7 )(Si 2 O 6 OH), a new species in the kristiansenite group: crystal chemistry and structure of holotype silesiaite from Szklarska Poręba, Poland, and Sc-free silesiaite from Häiviäntien, Finland
> Mineralogical Magazine
Published: 25 January 2023
Fig. 1. (a–f) Representative BSE images of zoned kristiansenite–silesiaite crystals from Szklarska Poręba (holotype # SP5). The narrow frame in figure (b) indicates the place of extraction of a single crystal for structural studies. Mineral name abbreviations: Kse – kristiansenite, Kzw
Journal Article
Replacement textures involving four scandium silicate minerals in the Heftetjern granitic pegmatite, Norway Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 November 2004
European Journal of Mineralogy (2004) 16 (6): 945–950.
... in equilibrium. Thortveitite is also partly replaced by kristiansenite. The two steps of alteration involve first the introduction of fluids rich in Be, K, Ca and Cs to form bazzite and milarite and then Ca and Sn for the formation of kristiansenite. Addition of water accompanies both steps. Thortveitite...
FIGURES
Image
A relationship between the refined unit-cell volume and < M –O> dista... Available to Purchase
in Silesiaite, ideally Ca 2 Fe 3+ Sn(Si 2 O 7 )(Si 2 O 6 OH), a new species in the kristiansenite group: crystal chemistry and structure of holotype silesiaite from Szklarska Poręba, Poland, and Sc-free silesiaite from Häiviäntien, Finland
> Mineralogical Magazine
Published: 25 January 2023
Fig. 5. A relationship between the refined unit-cell volume and < M –O> distance in silesiaite (this study), kristiansenite (Ferraris et al. , 2001 ; Evans et al. , 2018 ), and kozłowskiite (Pieczka et al. , 2022b ). Mineral name abbreviations: Kse – kristiansenite, Kzw – kozłowskiite
Image
BSE images of the mineral assemblages. (a) Euhedral zircon associated with ... Open Access
in Importance of Ca-rich fluids for the formation of secondary Sc-minerals. An example from a metaluminous pegmatite Kožichovice II, Czech Republic
> Mineralogical Magazine
Published: 01 December 2024
altered fluorcalciomicrolite with rare thin bright veinlets of Pb-enriched fluorcalciomicrolite. The microlite fills open spaces in older mineralisation dominated by columbite-(Mn) and fersmite (dark grey). Note the feeder structure connecting two microlite aggregates. (e) Kristiansenite veinlet
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Electron-microprobe analyses of kristiansenite from Heftetjern. Available to Purchase
in Replacement textures involving four scandium silicate minerals in the Heftetjern granitic pegmatite, Norway
> European Journal of Mineralogy
Published: 01 November 2004
Table 4. Electron-microprobe analyses of kristiansenite from Heftetjern.
Image
BSE image of sample H03/01b, showing in close-up the replacement of thortve... Available to Purchase
in Replacement textures involving four scandium silicate minerals in the Heftetjern granitic pegmatite, Norway
> European Journal of Mineralogy
Published: 01 November 2004
Fig. 3. BSE image of sample H03/01b, showing in close-up the replacement of thortveitite by kristiansenite.
Image
Comparison of selected structural parameters in kristiansenite, silesiaite ... Available to Purchase
in Kozłowskiite, ideally Ca 4 Fe 2+ Sn 3 (Si 2 O 7 ) 2 (Si 2 O 6 OH) 2 , a new kristiansenite-type mineral from Szklarska Poręba, Lower Silesia, Poland
> Mineralogical Magazine
Published: 23 May 2022
Table 8. Comparison of selected structural parameters in kristiansenite, silesiaite and kozłowskiite. Kristiansenite Silesiaite Kozłowskiite Idealised formula Ca 2 Sc 2 Sn 2 (Si 2 O 7 )(Si 2 O 6 OH) Ca 2 Fe 3+ 2 Sn 2 (Si 2 O 7 )(Si 2 O 6 OH) Ca 4 Fe 2+ Sn 3 (Si 2 O 7 ) 2 (Si
Image
BSE image of sample H03/01b. Thortveitite is penetrated by scandian milarit... Available to Purchase
in Replacement textures involving four scandium silicate minerals in the Heftetjern granitic pegmatite, Norway
> European Journal of Mineralogy
Published: 01 November 2004
Fig. 2. BSE image of sample H03/01b. Thortveitite is penetrated by scandian milarite and bazzite and is subsequently replaced by kristiansenite.
Journal Article
Importance of Ca-rich fluids for the formation of secondary Sc-minerals. An example from a metaluminous pegmatite Kožichovice II, Czech Republic Open Access
Journal: Mineralogical Magazine
Published: 01 December 2024
Mineralogical Magazine (2024) 88 (6): 787–803.
...Table 3. Representative compositions of silicates in wt.% and atoms per formula unit (apfu) * Tvt – Thortveitite, Kse – kristiansenite, Ttn – titanite, Zrn – Zircon. * Thortveitite and kristiansenite and zircon data were normalised to 7, 14 and 4 anions pfu. Titanite formula...
FIGURES
Image
Raman spectra of silesiaite from Szklarska Poręba (Ssa; magenta) and from H... Available to Purchase
in Silesiaite, ideally Ca 2 Fe 3+ Sn(Si 2 O 7 )(Si 2 O 6 OH), a new species in the kristiansenite group: crystal chemistry and structure of holotype silesiaite from Szklarska Poręba, Poland, and Sc-free silesiaite from Häiviäntien, Finland
> Mineralogical Magazine
Published: 25 January 2023
Fig. 3. Raman spectra of silesiaite from Szklarska Poręba (Ssa; magenta) and from Häiviäntien (Ssa; green) compared to the spectrum of kristiansenite (Kse; black; RRUFF database R090022, https://rruff.info/ ) and kozłowskiite (Kzw; blue).
Image
Back-scattered electron image of type kozłowskiite (Kzw) (specimen number M... Available to Purchase
in Kozłowskiite, ideally Ca 4 Fe 2+ Sn 3 (Si 2 O 7 ) 2 (Si 2 O 6 OH) 2 , a new kristiansenite-type mineral from Szklarska Poręba, Lower Silesia, Poland
> Mineralogical Magazine
Published: 23 May 2022
Fig. 1. Back-scattered electron image of type kozłowskiite (Kzw) (specimen number MMUWr IV7929). The Kzw band is overgrown by kristiansenite (Kse) and silesiaite (all other zones that are not labelled). White patches are inclusions of cassiterite and fersmite. Abbreviations of mineral names
Image
Chemical compositions of the studied silesiaite crystals (wt.%). S.D.... Available to Purchase
in Silesiaite, ideally Ca 2 Fe 3+ Sn(Si 2 O 7 )(Si 2 O 6 OH), a new species in the kristiansenite group: crystal chemistry and structure of holotype silesiaite from Szklarska Poręba, Poland, and Sc-free silesiaite from Häiviäntien, Finland
> Mineralogical Magazine
Published: 25 January 2023
: 9.93–10.82 wt.%, S.D. 0.34 wt.%) in the Häiviäntien silesiaite. The presented Fe 2 O 3 and FeO contents are calculated on the basis of the kristiansenite stoichiometry.
Journal Article
THE PINCH MEDAL FOR 2009 TO ROY KRISTIANSEN Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 April 2009
The Canadian Mineralogist (2009) 47 (2): 481–482.
..., kaatialite, zimbabweite, and oftedalite, and is collaborating with Uwe Kolitsch and Gunnar Raade on a new scandium tantalum oxide from Heftejern, Norway. He contributed to a fifth, kristiansenite, which was named in his honor with a citation recognizing him as “a well-known amateur mineralogist from Norway...
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Journal Article
The distribution and enrichment of scandium in garnets from the TØrdal pegmatites, south Norway, and its economic implications Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 30 September 2019
The Canadian Mineralogist (2019) 57 (5): 799–801.
.... Because of its behavior garnet is, besides mica, the major host for Sc in the pegmatites. In addition, various Sc minerals have been described from the Tørdal pegmatites including bazzite, cascandite, heftetjernite, kristiansenite, oftedalite, scandiobabingtonite, and thortveitite ( Raade et al . 2002...
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