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hypersthene

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hypersthene

[′hī·pər‚sthēn]
(mineralogy)
(Mg,Fe)SiO3 A grayish, greenish, black, or dark-brown rock-forming mineral of the orthopyroxene group, with bronzelike luster on the cleavage surface.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive
The CIPW norms of the rocks are dominated by sodic plagioclase followed by quartz albite minor hypersthene etc.
Geology and petrography of the Nagar Parkar igneous complex southeastern Sindh: the Dinsi body
Prismatic orthopyroxene (0.5-1.0 mm) display hypersthene core composition ([En.sub.62-68][Fs.sub.28-37]; Table 5 in Appendix A, and Fig.
Mineralogical and geochemical evidence of magma mingling/mixing in the Sierra de las Cruces volcanic range, Mexican Volcanic Belt/Evidencias mineralogicas y geoquimicas de mezcla incompleta de magmas en la Sierra de las Cruces, Cinturon Volcanico Mexicano
Quartz diabase grades upward into hypersthene diabase, which forms up to two-thirds of the sill thickness.
Economic geology models 2. Melt inclusions of native silver and native bismuth: a re-examination of possible mechanisms for metal enrichment in five-element deposits
However, Proterozoic Pielavesi granulites of central Finland, which are accompanied by hypersthene granitoids, were formed at 800[degrees]C and 5-6 kbar and show evidence for near-isobaric cooling (Holtta 1988).
Svecofennian metamorphic zones in the basement of Estonia/Eesti aluskorra Svekofennia moondevoondid
CIPW norms contain hypersthene (rocks are subalkaline; assuming [Fe.sub.2][O.sub.3]/FeO = 0.18; Irvine and Baragar 1971) which is consistent with tholeiitic Nb/Y ratios of ~0.3 and Ti[O.sub.2] concentrations (~1.3 wt.
A petrochemical study of basaltic layering at Henley Harbour, Labrador, using multidimensional scaling
A hypersthene sample from the Smithsonian was analyzed for Cr and used as a secondary standard.
Standard Reference Material (SRM 1990) for single crystal diffractometer alignment
37 (1987), 25 Hypersthene (= enstatite Morimoto et al.: Min.
The IMA Commission on New Minerals and Mineral Names: Procedures and Guidelines on Mineral Nomenclature 1998
normative with high concentration of plagioclase (62.14-64.15%) and highly variable amount of diopside (8.57-22.22%) and hypersthene (1.29- 19.1%).
Investigation for gold and base metals mineralization and petrochemical characteristics of the rocks of Golo Das and surrounding areas District Ghizar Gilgit-Baltistan Pakistan
The presence of hypersthene and corundum in the norm indicates a high [Al.sub.2][O.sub.3] content in the magma, which is also recognised in the rock analyses ([Al.sub.2][O.sub.3] 14.33-14.74 wt.
First report of a Middle-Upper Permian magmatism in the SE Iberian ranges: characterisation and comparison with coeval magmatisms in the western Tethys/Primeros datos del magmatismo permico medio-superior del SE de la Cordillera Iberica: caracterizacion y comparacion con magmatismos contemporaneos del Tethys occidental
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