Chernykhite, a new barium-vanadium mica from northwestern Karatau

Ankinovich, S.G.; Ankinovich, Ye.A..; Rozhdestvenskaya, I. V.; Frank-Kamenetskiy, V.A.

doi:10.1080/00206817309475934

Cited by 8 publications

(3 citation statements)

References 2 publications

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“…Mica with a composition of chloroferrokinoshitalite with Cl occupying more than 0.5 of the A position was previously described (Tracy 1991), although it was misidentified as anandite -Ba-bearing mica that contains predominantly S on the A position (Filut et al, 1985;Pattiaratchi et al, 1967). Another Ba-rich dioctahedral brittle mica is chernykhite, where the M position is rich in V (Ankinovich et al 1973). The composition of the micas mentioned above and the assignments to structural positions are shown in Table 1.…”

Section: Trioctahedral Ba(-cl) Bearing Micasmentioning

confidence: 99%

Compositional trends in Ba-, Ti-, and Cl-rich micas from metasomatized mantle rocks of the Gföhl Unit, Bohemian Massif, Austria

Zelinková,

Racek,

Abart

2023

American Mineralogist

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Ba-, Ti-, and Cl-rich micas associated with other Ba-and/or Cl-rich minerals in the rock matrix or in garnet and clinopyroxene hosted multiphase solid inclusions (MSI) are observed in mantle-derived garnet pyroxenites. The micas show extremely high variability in chemical composition ranging between Ba-rich phlogopite, chloroferrokinoshitalite, and oxykinoshitalite. Elemental covariation trends in mineral chemical data reveal the principal substitution mechanisms responsible for the observed chemical variability. The substitution Ba 2+ Al 3+ ↔K 1+ Si 4+ associated with either OH 1-↔Cl 1or Ti 4+ 2O 2-↔Mg 2+ 2OH 1 links phlogopite to chloroferrokinoshitalite and oxykinoshitalite, respectively, whereas the substitution2Cl 1links chloroferrokinoshitalite to oxykinoshitalite. The preferred incorporation of Cl in Fe-rich mica and of Ti+O in Mg-rich mica indicates that XFe (Fe tot /Fe tot +Mg) exerts an important control on mica composition. The positive correlation of XFe with Cl led to the formation of possibly the most Clrich mica so far described classified as chloroferrokinoshitalite(XFe 0.88 , Ba 0.95 K 0.03 Fe 2.68 Mg 0.37 Al 1.91 Si 2.01 Cl 1.98 ) with 10.98 wt% Cl. Substantial substitution of OHby Cland This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America. The published version is subject to change. Cite as Authors (Year) Title. American Mineralogist, in press.

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Section: Trioctahedral Ba(-cl) Bearing Micasmentioning

confidence: 99%

Compositional trends in Ba-, Ti-, and Cl-rich micas from metasomatized mantle rocks of the Gföhl Unit, Bohemian Massif, Austria

Zelinková,

Racek,

Abart

2023

American Mineralogist

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“…Usually, kinoshitalite has high contents of BaO and MnO and relatively low contents of FeO, Fe 2 O 3 and TiO 2 (Kato et al 1979, Dasgupta et al 1989, Gnos & Armbruster 2000. Only one occurrence of Mn-poor kinoshitalite has been reported (Solie & Su 1987 (Ankinovich et al 1973), anandite, Ba Fe 2+ 3 Fe 3+ Si 3 O 10 S (OH) (Pattiaratchi et al 1967), kinoshitalite, Ba Mg 3 Al 2 Si 2 O 10 (OH) 2 (Yoshii et al 1973a), ferrokinoshitalite, Ba Fe 3 Al 2 Si 2 O 10 (OH) 2 (Guggenheim & Frimmel 1999), and ganterite, [Ba 0.5 (Na,K) 0.5 ] Al 2 (Si 2.5 Al 1.5 O 10 ) (OH) 2 (Graeser et al 2003). In addition, several micas are enriched in Ba, e.g., biotite, phlogopite, muscovite (Mansker et al 1979, Wendlandt 1977, Gaspar & Wyllie 1982.…”

Section: (Traduit Par La Rédaction)mentioning

confidence: 99%

Oxykinoshitalite, a New Species of Mica From Fernando De Noronha Island, Pernambuco, Brazil: Occurrence and Crystal Structure

Kogarko¹,

Uvarova²,

Sokolova³

et al. 2005

The Canadian Mineralogist

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Oxykinoshitalite, ideally Ba (Mg 2 Ti 4+) (Si 2 Al 2) O 10 O 2 , is a new species of mica from Fernando de Noronha Island, Pernambuco, Brazil; it is found in an olivine nephelinite with olivine, clinopyroxene, Fe-Ti oxide, nepheline, calcite, apatite and K-rich feldspar. Oxykinoshitalite forms corroded irregularly shaped grains 0.03 to 0.05 mm across, and its color varies from bright orange to brown. It is brittle, H = 2½, D obs = 3.3(1), D calc = 3.45 g/cm 3 , has a brown streak, vitreous luster and does not fl uoresce in ultraviolet light; it has a perfect cleavage on {001} and a splintery fracture. In transmitted plane-polarized light, oxykinoshitalite is strongly pleochroic, X pale brown, Y ≈ Z deep red-brown; X ٙ c = 2° (in ␤ obtuse), Y = b, Z ٙ a = 8° (in ␤ obtuse), with absorption X <

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“…Nepouite is a Ni-analogue of lizardite (Glasser, 1907;Maksimovir, 1973;Brindley and Wan, 1975 hendricksite, a trioctahedral Zn-rich mica (Frondel and Ito, 1966;Frondel and Einaudi, 1968) willemseite, a Ni-analogue of talc (Hiemstra and de Waal, 1968b) pecoraite, a Ni-analogue ofclinochrysotile (Faust et al, 1969) Mn-sepiolite, Mn-palygorskite, Mn-ferrisepiolite, Mn-ferro-palygorskite (Semenov, 1969) chernykhite, a dioctahedral V,Ba,Na-rich mica (Ankinovich et al, 1972) kellyite, a Mn2+-analogue of amesite (Peacor et al, 1974) swinefordite, a Li,A1,Mg-rich smectite intermediate between dioctahedral and trioctahedral (Tien et al, 1975) baumite, a Mn,Fe,Zn-rich serpentine (Frondel and Ito, 1975) rnasutomilite, a Mn2+-analogue of zinnwa/dite (Harada et al, 1976). yofortierite, a MnZ+-analogue of palygorskite (Perrault et al, 1975).…”

Section: Miscellaneousmentioning

confidence: 99%