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Strontian

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Journal Article

Strontian fluoro-magnesiohastingsite in Alban Hills lavas (Central Italy): constraints on crystallization conditions

M. Gaeta, C. Freda
Published: 01 December 2001
Mineralogical Magazine (2001) 65 (6): 787–795.
DOI: https://doi.org/10.1180/0026461016560009
...M. Gaeta; C. Freda Abstract A magmatic calcic amphibole ( M4 Ca ≥ 1.50) characterized by large Sr and F contents (SrO>1 wt.%, F>2.5 wt.%) is described. According to the crystal-chemical formula, the amphibole can be classified as a strontian fluoro-magnesiohastingsite and the presence of Sr...
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Crystal chemistry of strontian soda melilite from nephelinite lava of Mt. Etinde, Cameroon

Luca BINDI, Paola BONAZZI, J. Godfrey FITTON
Published: 01 January 2001
European Journal of Mineralogy (2001) 13 (1): 121–125.
DOI: https://doi.org/10.1127/0935-1221/01/0013-0121
...Luca BINDI; Paola BONAZZI; J. Godfrey FITTON Abstract The crystal structure and chemical composition of two crystals (labelled ET1 and ET2) of strontian soda melilite from Mt. Etinde, Cameroon, are investigated. Quantitative analysis leads to the following formulae: (Ca 0.84 Sr 0.45 Na 0.71 )(Mg...
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STRONTIUM IN THE APATITE STRUCTURE: STRONTIAN FLUORAPATITE AND BELOVITE-(Ce)

John F. Rakovan, John M. Hughes
Published: 01 August 2000
The Canadian Mineralogist (2000) 38 (4): 839–845.
DOI: https://doi.org/10.2113/gscanmin.38.4.839
...John F. Rakovan; John M. Hughes Abstract Strontium is one of the most common substituents in apatite; the presence and behavior of Sr in apatite-group phases are of considerable significance in geology, materials science and biology. The atomic arrangements in strontian fluorapatite (1.18 Sr atoms...
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Cation partitioning in an unusual strontian potassicrichterite from Siberia: Rietveld structure refinement and Mössbauer spectroscopy

E. V. Sokolova, Yu. K. Kabalov, C. McCammon, J. Schneider, A. A. Konev
Published: 01 February 2000
Mineralogical Magazine (2000) 64 (1): 19–23.
...E. V. Sokolova; Yu. K. Kabalov; C. McCammon; J. Schneider; A. A. Konev Abstract The crystal structure of strontian potassicrichterite (Mg 4.871 Fe 0.126 3+ Mn 0.052 )∑5.049 (Na 1.425 Ca 0.348 Sr 0.297 ) ∑2.07 K 0.873 Si 8.048 O 22 (OH) 2.15 – an unusual amphibole containing up to 3.7 wt.% SrO from...
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FIRST OCCURRENCE OF STRONTIAN K-Cr LOPARITE AND Cr-CHEVKINITE IN DIAMONDS

M. G. Kopylova, R. S. Rickard, A. Kleyenstueber, W. R. Taylor, J. J. Gurney, L. R. M. Daniels
Published: 01 February 1997
Russ. Geol. Geophys. (1997) 38 (2): 405–420.
...). These radioactive inclusions are identified as strontian K-Cr-loparite and Cr-chevkinite; both are partially replaced by secondary phases. The strontian K-Cr-loparite differs in composition, physical properties and unit cell parameters from all known minerals of the perovskite group. Potassium and chromium, common...
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Potassian zirconium and titanium silicates and strontian cerian perovskite in lamproites from the Leucite Hills, Wyoming

Roger H. Mitchell, Ian Steele
Published: 01 December 1992
The Canadian Mineralogist (1992) 30 (4): 1153–1159.
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Thermal behavior of the crystal structure of strontian piemontite

Michele Catti, Giovanni Ferraris, Gabriella Ivaldi
Published: 01 December 1988
American Mineralogist (1988) 73 (11-12): 1370–1376.
...Michele Catti; Giovanni Ferraris; Gabriella Ivaldi Abstract Unit-cell constants of a strontian-piemontite sample from St. Marcel (Val d'Aosta, Italy) with composition Ca 1.80 Sr 0.20 Al 1.91 Fe 0.33 Mn 0.82 Si 3 O 12 OH were measured at several temperatures by single-crystal X-ray diffractometry...
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Igneous emplacement in a shear-zone termination: The biotite granite at Strontian, Scotland

DONALD H.W. HUTTON
Journal: GSA Bulletin
Published: 01 September 1988
GSA Bulletin (1988) 100 (9): 1392–1399.
DOI: https://doi.org/10.1130/0016-7606(1988)100<1392:IEIASZ>2.3.CO;2
...DONALD H.W. HUTTON Abstract Deformed xenolith (strain) data together with other structural information indicate that the biotite granite body (∼90 sq km) of the Strontian complex, Scotland, was emplaced in the extensional termination of a dextral transcurrent shear zone. This shear zone is a splay...
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The distribution of metamorphic temperatures around the Strontian granodiorite

J. R. Ashworth, I. M. Tyler
Published: 01 May 1983
Geological Magazine (1983) 120 (3): 281–290.
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Laumontite and barian-strontian heulandite from the Blairmore Group (Cretaceous), Alberta

Bruce E. Miller, Edward D. Ghent
Published: 01 December 1973
The Canadian Mineralogist (1973) 12 (3): 188–192.
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Strontian meta-autunite from the Daybreak Mine, Mt. Spokane, Washington

A. Volborth
Published: 01 August 1959
American Mineralogist (1959) 44 (7-8): 702–711.
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Strontian apatite

Esper S. Larsen, Jr., Mary H. Fletcher, Evelyn A. Cisney
Published: 01 August 1952
American Mineralogist (1952) 37 (7-8): 656–658.
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False-color BSE images of apatite-group minerals from Murun (A) and Lac de ...

False-color BSE images of apatite-group minerals from Murun (A) and Lac de ...

Published: 01 February 2002
F ig . 4. False-color BSE images of apatite-group minerals from Murun (A) and Lac de Gras (B–D). (A) Anhedral strontian fluorapatite (green-blue) and strontium-apatite (orange) rimmed by strontianite (mauve). (B) Spherulites and discrete crystals of apatite-group minerals (purple to yellow
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False-colour back-scattered electron images of apatite-group minerals. ( a ...

False-colour back-scattered electron images of apatite-group minerals. ( a ...

Published: 01 October 2006
), cemented and entrapped by strontian fluorapatite (FAp-Sr), finally mantled by Sr-apatite (SrAp). ( d ) Complex alteration of fluorapatite (yellow) and strontian fluorapatite (green) and their successive replacement by Sr-apatite (pink), LREE -rich Sr-apatite (red), britholite-II (orange), and late Na-Sr
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Tausonite-<span class="search-highlight">strontian</span> loparite from the Little Murun complex, Yakutia, Russia...

Tausonite-strontian loparite from the Little Murun complex, Yakutia, Russia...

Published: 01 June 2017
Fig. 8. Tausonite-strontian loparite from the Little Murun complex, Yakutia, Russia. Tausonite occurs in the core of this strongly-zoned crystal. ( a ) Plane polarized light optical image; ( b ) false coloured back-scattered electron image. See Mitchell and Vladykin (1993) for compositional
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Analyses of barian and <span class="search-highlight">strontian</span> feldspars with An content &amp;lt;6 mol% in th...

Analyses of barian and strontian feldspars with An content <6 mol% in th...

Published: 01 November 2014
Figure 3 Analyses of barian and strontian feldspars with An content <6 mol% in the ternary plots NaAlSi 3 O 8 –KAlSi 3 O 8 –(SrAl 2 Si 2 O 8 +BaAl 2 Si 2 O 8 ) ( a ) and BaAl 2 Si 2 O 8 –KAlSi 3 O 8 –SrAl 2 Si 2 O 8 ( b ).
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Spatial relationship between Sr-poor collinsite and <span class="search-highlight">strontian</span> collinsite. (...

Spatial relationship between Sr-poor collinsite and strontian collinsite. (...

Published: 01 August 2001
F ig . 4. Spatial relationship between Sr-poor collinsite and strontian collinsite. (a, b, c) Peripheral concentric zone composed of strontian collinsite on an aggregate of Sr-poor collinsite. (d, e) The opposite relationship. Scanning images of polished samples in back-scattered electrons (e
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Spatial relationship between Sr-poor collinsite and <span class="search-highlight">strontian</span> collinsite. (...

Spatial relationship between Sr-poor collinsite and strontian collinsite. (...

Published: 01 August 2001
F ig . 4. Spatial relationship between Sr-poor collinsite and strontian collinsite. (a, b, c) Peripheral concentric zone composed of strontian collinsite on an aggregate of Sr-poor collinsite. (d, e) The opposite relationship. Scanning images of polished samples in back-scattered electrons (e
Image
Spatial relationship between Sr-poor collinsite and <span class="search-highlight">strontian</span> collinsite. (...

Spatial relationship between Sr-poor collinsite and strontian collinsite. (...

Published: 01 August 2001
F ig . 4. Spatial relationship between Sr-poor collinsite and strontian collinsite. (a, b, c) Peripheral concentric zone composed of strontian collinsite on an aggregate of Sr-poor collinsite. (d, e) The opposite relationship. Scanning images of polished samples in back-scattered electrons (e
Image
Spatial relationship between Sr-poor collinsite and <span class="search-highlight">strontian</span> collinsite. (...

Spatial relationship between Sr-poor collinsite and strontian collinsite. (...

Published: 01 August 2001
F ig . 4. Spatial relationship between Sr-poor collinsite and strontian collinsite. (a, b, c) Peripheral concentric zone composed of strontian collinsite on an aggregate of Sr-poor collinsite. (d, e) The opposite relationship. Scanning images of polished samples in back-scattered electrons (e