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sellaite

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Journal Article
Published: 01 November 2012
American Mineralogist (2012) 97 (11-12): 1987–1997.
...Katharina Pfaff; Sebastian Staude; Gregor Markl Abstract Sellaite (MgF 2 ) forms from melts, fluids, and gases under variable temperature, pressure, f O 2 , and fluid salinity conditions. It is typically associated with, but much rarer, than fluorite (CaF 2 ). The Clara mine near Oberwolfach...
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( a ) Hand specimen of <span class="search-highlight">sellaite</span> intergrown with relics of carbonates (that ...
Published: 01 November 2012
Figure 2 ( a ) Hand specimen of sellaite intergrown with relics of carbonates (that are now replaced by purple fluorite-II). ( b ) Hand specimen of sellaite overgrown by fluorite-II. Carbonate relics are replaced by fluorite. ( c ) Polished hand specimen of sellaite, partly replaced by fluorite
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Model of <span class="search-highlight">sellaite</span> formation in the Clara deposit, Oberwolfach, Schwarzwald....
Published: 01 November 2012
Figure 6 Model of sellaite formation in the Clara deposit, Oberwolfach, Schwarzwald. ( a ) Alteration of the host rock (1) observed by Gerler (1987) and formation of the mineralization stages 1 and 2.1 after Huck (1984) , (2) shows fluid-rock interaction and lowering of the Ca/Mg-ratio
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Isotopic distribution maps of a composite grain comprising <span class="search-highlight">sellaite</span> (Sl), t...
Published: 19 November 2018
Fig. 7. Isotopic distribution maps of a composite grain comprising sellaite (Sl), tetradymite (Td), pyrite (Py) and chalcopyrite (Cpy). Although the 206 Pb seems to correlate with pyrite, 226 Ra and 210 RN instead accumulate as small ‘hot spots’ on grain boundaries, possibly resulting from
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Results of stage 2.2 and 2.3 fluid inclusion investigations of <span class="search-highlight">sellaite</span> and...
Published: 01 November 2012
Figure 3 Results of stage 2.2 and 2.3 fluid inclusion investigations of sellaite and fluorite compared with data from stages 1 and 3 of the Clara vein system. ( a ): ice melting temperatures (lower box) and the hydrohalite melting temperatures (upper box) vs. the homogenization temperature
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Solubilities of anhydrite, calcite, fluorite, and <span class="search-highlight">sellaite</span> in a fluid with ...
Published: 01 November 2012
Figure 4 Solubilities of anhydrite, calcite, fluorite, and sellaite in a fluid with 26 wt% NaCl equivalent salinity ( a ) between 50 and 350 °C at 25 MPa, ( b ) between 50 and 350 °C at 100 MPa, ( c ) between 500 and 250 MPa at 100 °C, and ( d ) between 500 and 250 MPa at 350 °C.
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Greenish-brown crystals of bimbowrieite on fluorapatite, associated with us...
Published: 13 November 2023
Figure 1. Greenish-brown crystals of bimbowrieite on fluorapatite, associated with ushkovite (orange) and sellaite (white). The field of view is 2.3 mm, South Australian Museum specimen G34762.
Journal Article
Published: 01 December 1979
American Mineralogist (1979) 64 (11-12): 1156–1174.
...C. J. Duffy; H. J. Greenwood Abstract Unit-cell parameters as functions of mole fraction fluoro-endmember have been determined for clinohumite, chondrodite, norbergite, brucite, and sellaite. In addition, the d spacing for the (060) peak of talc was determined as a function of mole fraction fluoro...
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Rock-buffered fluid (fluid/rock-ratio of 1:100) from  Figure 5  and  Table ...
Published: 01 November 2012
). Sellaite starts to precipitate at higher temperatures compared to fluorite, is cogenetic with fluorite at around 150 °C and is replaced by fluorite below 150 °C. Moreover, sellaite precipitation occurs when about 10% of the original fluid is consumed, while fluorite co-precipitates only, after around 35
Journal Article
Published: 01 April 1947
American Mineralogist (1947) 32 (3-4): 146–157.
... clinohumite and certain hypothetical upper members of the family failed, pure magnesium orthosilicate being obtained instead. Norbergite, chondrodite, and sellaite crystallized from a melt with a composition between sellaite and norbergite. Copyright © 1947 by the Mineralogical Society of America 1947...
Journal Article
Published: 13 November 2023
Mineralogical Magazine (2024) 88 (1): 90–96.
...Figure 1. Greenish-brown crystals of bimbowrieite on fluorapatite, associated with ushkovite (orange) and sellaite (white). The field of view is 2.3 mm, South Australian Museum specimen G34762. ...
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Difference  C  p  OH / T  −  C  p  F / T versus T , where  C  p  OH  and  C...
Published: 01 June 2010
Fig. 8. Difference C p OH / T − C p F / T versus T , where C p OH and C p F are heat capacities of OH and F end-members, respectively, for pargasite (diamonds, this study), phlogopite (triangles), apatite (stars) and brucite/ sellaite (squares). Error bars are 1 σ .
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Fluoride phases (glasses) in melt inclusions from quartz phenocrysts in por...
Published: 01 October 2010
immiscible sellaite and Ca–F glasses after melt inclusion heating to 900–950 °C (sample ARB23); c , d : inclusions from one growth region of a quartz phenocryst after melt inclusion heating to 900 °C (sample ARB24): c , with concentrically zoned segregations of immiscible glasses (a Ca–F one inside
Journal Article
Published: 15 July 2019
The Canadian Mineralogist (2019) 57 (4): 427–456.
...); fluorite-sellaite with secondary Sr- and Mg-bearing phases; baryte-tennantite/tetrahedrite ss-chalcopyrite with secondary Cu arsenates, carbonates, and sulfates; baryte-tennantite/tetrahedrite ss-polybasite/pearceite-chalcopyrite, occasionally accompanied by Ag±Bi±Pb-bearing sulfides with secondary Sb...
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Journal Article
Published: 01 December 2016
European Journal of Mineralogy (2016) 28 (5): 997–1004.
... of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka, Russia. It is associated with sofiite, sellaite, fluorite, halite, anhydrite, cotunnite, chubarovite, flinteite, etc . Zincomenite occurs as tabular, equant or prismatic crystals up to 0.2 mm sometimes combined...
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Difference  C  p  OH  −  C  p  F  versus T , where  C  p  OH  and  C  p  F ...
Published: 01 June 2010
Fig. 7. Difference C p OH − C p F versus T , where C p OH and C p F are heat capacities of OH and F end-members, respectively, for pargasite (Prg, diamonds, this study), phlogopite (Phl, triangles), apatite (stars) and brucite/sellaite (Bru/Sel, squares). Error bars are 1 σ
Journal Article
Published: 01 December 2015
European Journal of Mineralogy (2015) 27 (6): 805–812.
.... It is associated with gypsum, ralstonite and opal; earlier, primary minerals of the assemblage are sellaite, fluorite, halite, anhydrite, cotunnite, sofiite, flinteite, chubarovite, anglesite, challacolloite, zincomenite, saltonseaite, hollandite, hematite, jakobssonite, leonardsenite and olsacherite...
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Journal Article
Published: 16 September 2015
The Canadian Mineralogist (2015) 53 (2): 273–284.
..., fluorophlogopite, hematite, and tenorite. At the First scoria cone, chubarovite is closely associated with sellaite, fluorite, anhydrite, halite, cotunnite, challacolloite, sofiite, and flinteite. Chubarovite forms hexagonal or trigonal lamellar to tabular crystals up to 1.5 mm across and up to 0.5 mm thick...
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Journal Article
Published: 01 August 2015
European Journal of Mineralogy (2015) 27 (4): 581–588.
... Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka, Russia. In the Northern fumarole field at the First scoria cone (locality of the holotype), flinteite is a common mineral associated with halite, sellaite, fluorite, saltonseaite, chubarovite and hollandite. In the Arsenatnaya fumarole at the Second...
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Journal Article
Published: 01 July 2015
The Canadian Mineralogist (2015) 53 (4): 633–641.
... of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka, Russia. Associated minerals are belloite, avdoninite, eriochalcite, sylvite, halite, carnallite, mitscherlichite, chrysothallite, romanorlovite, mellizinkalite, gypsum, chlorothionite, kainite, sellaite, and earlier hematite, tenorite...
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