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magnesian hastingsite

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Journal Article
Published: 01 December 1994
Mineralogical Magazine (1994) 58 (4): 621–627.
Journal Article
Journal: Economic Geology
Published: 01 September 2000
Economic Geology (2000) 95 (6): 1215–1230.
.... Amphiboles are largely of hastingsite and magnesian hastingsite composition. Scheelite contains moderate amounts of molybdenum (<3 wt % MoO 3 ), which give powellite mole proportions of up to 6 percent, and is largely unaccompanied by molybdenite. Isotopic measurements of the protolith Gordon Limestone...
FIGURES | View All (10)
Journal Article
Published: 01 August 1993
Canadian Journal of Earth Sciences (1993) 30 (8): 1644–1649.
...R. J. Goble; S. B. Treves; A. M. Ghazi Abstract A 5–7 m thick analcime phonolite sill occurs in the middle of the Proterozoic Gateway Formation in southwest Alberta. The sill consists of sanidine, aegirine–augite, magnesian hastingsite, melanite with hydrogrossular rims, titanite, and minor biotite...
Journal Article
Published: 01 October 1991
Canadian Journal of Earth Sciences (1991) 28 (10): 1653–1663.
..., monchiquites, and sannaites. The camptonites are characterized by phenocrysts of olivine, aluminian pyroxene, kaersutite, and titanian ferropargasite set in a matrix of magnesian hastingsite, augite, plagioclase, biotite, magnetite, sphene, and minor nepheline. Quartz macrocrysts occur as corroded euhedral...
Image
F IG . 7. Plot of Mg/(Mg + Fe) against Si (in atomic
proportions) of skarn ...
Published: 01 September 2000
F IG . 7. Plot of Mg/(Mg + Fe) against Si (in atomic proportions) of skarn amphibole from the Kara skarn deposit, northwestern Tasmania. Plot based on amphibole classification criteria of Leake (1978) . I = ferro-edentic hornblende, II = magnesio-hastingsitic hornblende, III = magnesian
Journal Article
Published: 01 July 1928
American Mineralogist (1928) 13 (7): 287–296.
.... Members of the ferrous end of the hastingsite group are found in hastingsite granites, nordmarkites, and nephelite syenites. Barkevikite and the magnesian members of the hastingsite group are found in diorites, essexites, and related calcic rocks. The present paper is concerned only with the hastingsite...
Image
Amphibole compositions (expressed as atomic formula units on the basis of 2...
Published: 01 July 2006
). Nomenclature in panels (c) from Leake et al. (1997) , abbreviations as follows: Act – actinolitic; Ed –edenitic; Fea – ferroan; Has – hastingsite, hastingsitic; Hb, Hbl – hornblende; Mg – magnesio; Mga – magnesian; P – pargasitic; Parg – pargasite; Tsch – tschemakitic.
Journal Article
Published: 01 September 1991
Journal of the Geological Society (1991) 148 (5): 801–804.
... in aegirine end-member than omphacite and iopsidic pyroxene in symplectites (Fig. 2B). Green amphibole in kelyphitic rims of garnet is a Ti- poor, AI-rich magnesian hastingsite; green-brown and brown matrix-amphibole are also in most cases of has- tingsitic affinities (magnesian hastingsite, magnesian has...
Journal Article
Published: 01 June 1987
The Canadian Mineralogist (1987) 25 (2): 353–377.
.../kyanite Uranmicrolite Synchysite-(Y) Kasolite Takovite Cryptomelane Winchite Kolbeckite Ferro-richterite Caryopilite Uranpyrochlore Mixture Impure pyrochlore Stilbite Mixture Schoepite Bornite Valentinite Tetrahedrite Hornblende Feldspar Feldspar Magnesian hastingsite Mineral. Mag 43 (1980),1053 Minersl...
Journal Article
Published: 01 June 2000
The Canadian Mineralogist (2000) 38 (3): 669–674.
... amphibole was initially described as subsilicic hastingsite by Hawthorne & Grundy (1977) , then as subsilicic titanian magnesian hastingsite by Hawthorne (1983) ; according to the current amphibole-nomenclature scheme ( Leake et al. 1997 ), it is a potassian ferrian sadanagaite. Note that the scheme...
FIGURES
Journal Article
Published: 01 April 1993
Journal of the Geological Society (1993) 150 (2): 259–276.
... J , f 7'.0 6-s B'.o Si atoms per 23 oxygen atoms @ © Key Associated with or replacing cpx opx ol Brown or brown-green amphibole Pale green or pale yellow amphibole KI A occurs independently © 0 6.0 Magnesian Hastingsite 1-o 0.8 0.6 0-4 Fig. 10. Compositions, nomenclature and associations...
Journal Article
Published: 01 July 2021
The Journal of Geology (2021) 129 (4): 371–390.
...-polarized light. c , Orthopyroxene and biotite in charnockitic assemblage. Sample AHA61. d , Crystal laths of antiperthite and perthite, and sample AHA61, cross-polarized light. e , f , Replacement of orthopyroxene to hastingsite, biotite, and quartz. Arrow indicates triple-point grain boundary texture...
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Journal Article
Published: 01 December 2003
The Canadian Mineralogist (2003) 41 (6): 1329–1344.
... of calcic amphibole from Japan . Am. Mineral . 69 , 465 – 471 . Shiraishi , K. , Oba , T. , Suzuki , M. & Ishikawa , K.I. ( 1994 ): Subsilicic magnesian potassium-hastingsite from the Prince Olav Coast, East Antarctica . Mineral. Mag . 58 , 621 – 627 . Sokolova...
FIGURES
Journal Article
Published: 01 March 2003
The Journal of Geology (2003) 111 (2): 183–205.
... has Mg# between 45 and 65; Al 2 O 3 between 0.5 and 1.7 wt%; TiO 2 between 0.02 and 0.15 wt%; with low Fe 3+ /Fet, Al vi , and Wo. Harzburgite 98-1062C (Douglas Harbour domain) has high-Al 2 O 3 (1.6%–2 wt%) enstatite (Mg# 89-91). Tonalite and trondhjemite contain magnesian hastingsitic...
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Journal Article
Published: 01 October 2003
Mineralogical Magazine (2003) 67 (5): 873–892.
... and does not appear to be strongly related to amphibole type. In summary, North Qôoq amphiboles are highly variable in composition. The least evolved amphiboles are ferrokaersutite and magnesian hastingsite, which evolve through katophorite to ferrorichterite. Amphiboles from metasomatized syenites...
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Journal Article
Published: 01 January 2018
American Mineralogist (2018) 103 (1): 55–68.
... (mostly Cl-rich potassic-hastingsite and magnesio-ferri-hornblende) and biotites contain concentrations of Cl reaching up to 2.9 and 3.4 wt%, respectively. Biotites contain up to 10.5 wt% BaO and 6.9 wt% TiO 2 . Substitution of Cl into amphibole and biotite is more likely where Cl-bearing anion sites...
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Journal Article
Published: 10 September 2020
Mineralogical Magazine (2020) 84 (5): 662–690.
...); and (4) brownish Ca-amphibole (K-hastingsite). Classification is according to Hawthorne et al. ( 2012 ) and has been calculated using the spreadsheet of Locock ( 2014 ). Distinctions between monoclinic and orthorhombic (Fe,Mg,Mn)-amphibole were done according to B-site Ca content which tends...
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Journal Article
Published: 20 February 2002
Canadian Journal of Earth Sciences (2002) 39 (2): 239–258.
...: higher Or) Or 89–91 Exsolution An 20–25 (perthite), Ab 98 (rods at Kfs rims) Ab 92 (perthite rods) Ab perthite lamellae Hbl b Ferroan pargasitic Hbl/magnesian hastingsite Ferroan pargasitic Hbl/magnesian hastingsite Hastingsite Ferroan pargasitic HblGrt incl: magnesio-Hbl...
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Journal Article
Published: 01 July 2006
Geological Magazine (2006) 143 (4): 417–429.
... ). Nomenclature in panels (c) from Leake et al. (1997) , abbreviations as follows: Act – actinolitic; Ed –edenitic; Fea – ferroan; Has – hastingsite, hastingsitic; Hb, Hbl – hornblende; Mg – magnesio; Mga – magnesian; P – pargasitic; Parg – pargasite; Tsch – tschemakitic. ...
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Journal Article
Published: 01 November 2012
Russ. Geol. Geophys. (2012) 53 (11): 1176–1196.
.... Their mineral composition includes pyroxenes (augite and hedenbergite) and Ca-amphiboles (ferrous in intermediate rocks—hastingsite and ferro-edenite, and magnesian in mafic volcanics—magnesiohornblende and edenite, in fewer cases—actinolite, pargasite, and ferropargasite). The presence of hastingsite (which...
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