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paralava

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Journal Article
Published: 01 August 2017
Mineralogical Magazine (2017) 81 (4): 1009-1019.
...Irina O. Galuskina; Evgeny V. Galuskin; Yevgeny Vapnik; Krystian Prusik; Marta Stasiak; Piotr Dzierżanowski; Mikhail Murashko Abstract Two new barium-bearing minerals: gurimite, Ba 3 (VO 4 ) 2 (IMA2013-032) and hexacelsian, BaAl 2 Si 2 O 8 (IMA2015-045) were discovered in veins of paralava cutting...
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Journal Article
Published: 01 November 2005
American Mineralogist (2005) 90 (11-12): 1940-1944.
...Leone Melluso; Sandro Conticelli; Massimo D’Antonio; Nicoletta P. Mirco; Emilio Saccani Abstract Two small outcrops of wollastonite- and melilite-bearing paralavas, with a pyrometamorphic genesis, have been found along the Apennine chain, in Central Italy, at the localities of Colle Fabbri...
FIGURES
Journal Article
Published: 01 February 2019
Mineralogical Magazine (2019) 83 (1): 123-135.
...Victor V. Sharygin Abstract The intergrowths of Fe-rich corundum + Al-rich hematite + spinel + hibonite have been found as an assemblage in a plagioclase-clinopyroxene rock (paralava, former hornfels) at the Hatrurim Basin, Hatrurim combustion metamorphic Formation. Most spinels show oriented...
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Journal Article
Published: 01 February 1989
American Mineralogist (1989) 74 (1-2): 85-100.
... and unusual compositions. The melt-rock or paralava , was transformed from coal-ash and overlying Tertiary sedimentary rocks through local heating to fusion temperatures. Paralava bulk compositions differ from overlying and surrounding baked sedimentary rocks, or clinker , by marked depletions of Si, Al...
Series: GSA Reviews in Engineering Geology
Published: 01 January 2007
DOI: 10.1130/2007.4118(08)
EISBN: 9780813758183
... various degrees of oxidation. Paralavas that are associated with the iron-rich lenses form stalactites around fissures and gas-escape vents and intrude the porcellanites. The slags are unusually rich in iron and contain magnetite, hematite, hercynite, titaniferous magnetite, and minor fayalite...
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Series: GSA Reviews in Engineering Geology
Published: 01 January 2007
DOI: 10.1130/2007.4118(09)
EISBN: 9780813758183
... Abstract Unusual dike-like bodies and lenses of paralava, up to 1–5 m long and 10 cm thick, are found in the “olive” unit of the combustion metamorphic complex in the Hatrurim Basin, Israel. High-temperature rocks of the “olive” unit are composed of anorthite and clinopyroxene...
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Journal Article
Published: 01 August 2017
Mineralogical Magazine (2017) 81 (4): 949-974.
...Igor S. Peretyazhko; Elena A. Savina; Elena A. Khrоmova Abstract This is the first description of rare minerals found in paralavas from a recently discovered combustion metamorphic complex in the Choir–Nyalga basin, Central Mongolia. The identified minerals contain strongly variable concentrations...
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Journal Article
Published: 01 March 2017
European Journal of Mineralogy (2017) 29 (1): 101-116.
... supergroup. Khesinite was discovered in thin veins of paralavas within fine-grained gehlenite rocks (hornfels) of the Hatrurim Complex in the Negev Desert, Israel. Paralavas are composed of rankinite, pseudowollastonite (rarely wollastonite), flamite, kalsilite, cuspidine and members of the solid-solution...
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Image
<b>Paralava</b> fragment from sample MN-1127 ( a ) and kuratite crystals in inters...
Published: 01 August 2017
Fig. 3. Paralava fragment from sample MN-1127 ( a ) and kuratite crystals in interstices between microphenocrysts ( b ). White box in panel ( a ) frames the fragment enlarged in panel ( b ). Mineral names are abbreviated as Mll = melilite, Cpx = Al-clinopyroxene, An = anorthite, Spl = spinel (Fe
Image
BSE images of phase assemblages in <b>paralava</b> samples MN-1133. ( a ) Nephelin...
Published: 01 August 2017
Fig. 14. BSE images of phase assemblages in paralava samples MN-1133. ( a ) Nepheline filling interstices between microphenocrysts, with inclusions of Ca-bearing fayalite, celsian, tobermorite-like X-mineral, and palagonite aggregate enclosing goethite; ( b ) melt inclusions of calcite
Image
Gurimite and hexacelsian in <b>paralava</b> of the Hatrurim Complex, Gurim Anticli...
Published: 01 August 2017
Fig. 1. Gurimite and hexacelsian in paralava of the Hatrurim Complex, Gurim Anticline, Hatrurim Basin, Negev Desert. ( a ) Partially replaced polymineralic inclusion in rankinite containing Ba-bearing minerals: zadovite, barioferrite, gurimite, baryte and walstromite, the frame shows an area
Image
(a) Holotype specimen no. IS-58 of <b>paralava</b> with conspicuous dark-brown sch...
Published: 01 March 2017
Fig. 1 (a) Holotype specimen no. IS-58 of paralava with conspicuous dark-brown schorlomite crystals. Fragment magnified in (b) is shown in a frame; fragment magnified in (c–e) is shown in a circle; (b) rankinite–schorlomite–pseudowollastonite–gehlenite paralava with khesinite crystal, fragment
Image
Small veins of coarse crystalline <b>paralava</b> in gehlenite rock. Minerals in t...
Published: 01 October 2015
F ig . 1. Small veins of coarse crystalline paralava in gehlenite rock. Minerals in the paralava are distinguished by colour. Schorlomite and Ti-rich andradite – black, dark-brown; gehlenite – brown, yellow-brown; rankinite, pseudowollastonite, fluorapatite, cuspidine – light-brown, pink, light
Image
Backscattered electron (BSE) images of zadovite in <b>paralava</b> from the Gurim ...
Published: 01 October 2015
F ig . 2. Backscattered electron (BSE) images of zadovite in paralava from the Gurim anticline: ( a ) Zadovite grown on fluorapatite or occupying cracks in rock-forming minerals. Framed sections are magnified in ( b ) and ( c ). ( b ) Xenomorphic aggregates of zadovite. ( c ) Zadovite enclosed
Image
( a ) <b>Paralava</b> holotype sample YV-402 with retrograde minerals, namely calc...
Published: 01 June 2015
F ig . 1. ( a ) Paralava holotype sample YV-402 with retrograde minerals, namely calcium silicate hydrates and calcite (white) filling vesicles in the melt rock; ( b – f ) morphological diversity of minerals in flamite-bearing paralava; ( b ) a mosaic of squarish gehlenite and anhedral grains
Image
Pyrometamorphic rock samples from Stenkul Fiord area. ( a ) <b>Paralava</b> with p...
Published: 15 August 2007
Fig. 4. Pyrometamorphic rock samples from Stenkul Fiord area. ( a ) Paralava with pahoehoe-like surface surrounds red-brown clinker (sample from outcrop 483; see Fig.  2b for location. ( b ) Dark vesicular paralava intruded in red-brown clinker (sample from outcrop 483; see Fig.  2 b
Image
Profile sketch of <b>paralava</b> sills and dykes cutting through unconsolidated c...
Published: 15 August 2007
Fig. 5. Profile sketch of paralava sills and dykes cutting through unconsolidated clastic deposits of the Upper Paleocene – Eocene Mount Moore Formation south of Stenkul Fiord (outcrop 483; see Fig.  2 b for location). Note that the fold structures in the fine-grained deposits were caused
Journal Article
Published: 01 February 1987
American Mineralogist (1987) 72 (1-2): 148-156.
...Michael A. Cosca; Donald R. Peacor Abstract Esseneite, a new clinopyroxene with ideal formula CaFe 3+ AlSiO 6 occurs with melilite, anorthite, solid solutions of magnetite-hercynite, and glass in paralava (fused sedimentary rock) associated with naturally combusted coal seams near Gillette, Wyoming...
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Classification of melilites from <b>paralavas</b> according to contents of åkerman...
Published: 01 August 2017
Fig. 4. Classification of melilites from paralavas according to contents of åkermanite (Ca 2 MgSi 2 O 7 ), ferroåkermanite (Ca 2 Fe 2+ Si 2 O 7 ), gehlenite (Ca 2 Al 2 SiO 7 ) and ferrigehlenite (Ca 2 Fe 3+ AlSiO 7 ) end-members. Symbols refer to samples MN-1127 (1), MN-1287 (2), MN-1128 (3), MN
Image
Classification of clinopyroxenes from <b>paralavas</b> according to contents of wo...
Published: 01 August 2017
Fig. 5. Classification of clinopyroxenes from paralavas according to contents of wollastonite (Wo), enstatite (En) and ferrosilite (Fs) end-members. Symbols are the same as in Fig. 4 .