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habit

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Journal Article
Journal: Economic Geology
Published: 01 August 2021
Economic Geology (2021) 116 (5): 1073–1092.
... of δ 18 O for apatite from the ores. The inset CL images show oxygen isotope variations between the bright and dark grains in the same sample. The white and black circles represent the bright and dark domains, respectively. Apatite from the lherzolite: The hexagonal habit of apatite...
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Journal Article
Published: 03 February 2021
Mineralogical Magazine (2021) 85 (2): 172–188.
...Ping Wang; Thomas P. Gray; Zhe Li; Evan J.D. Anderson; Julien Allaz; Joseph R. Smyth; Alan E. Koenig; Lijian Qi; Yan Zhou; Markus B. Raschke Abstract Beryl from Xuebaoding, Sichuan Province, western China is known for its unusual tabular habit and W–Sn–Be paragenesis in a greisen-type deposit...
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Journal Article
Journal: Geology
Published: 07 October 2020
Geology (2021) 49 (2): 201–205.
.... 35 Ma Chesapeake Bay impact event which, remarkably, experienced near-complete conversion (89%) to reidite. The grain displays two distinctive reidite habits: (1) intersecting sets of planar lamellae that are dark in cathodoluminescence (CL); and (2) dendritic epitaxial overgrowths on the lamellae...
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Journal Article
Published: 20 February 2020
Environmental and Engineering Geoscience (2020) 26 (1): 3–8.
... (length/width, by geometric definition) >3 can display a non-fibrous habit (bladed, lamellar, columnar, or prismatic), but the definition is to be applied in asbestos mines and product factories, where the vast majority of particles with an aspect ratio >3 will be asbestos. Nevertheless, the OSHA...
FIGURES
Journal Article
Published: 01 September 2019
European Journal of Mineralogy (2019) 31 (5-6): 1025–1032.
..., in allusion to the green colour and lamellar crystal habit. Figure 1 Green crystals of elasmochloite forming clusters and interrupted crusts on the surface of basalt scoria altered by fumarolic gas (the red coloration of some areas of scoria surface is caused by fine-powdery hematite). Field of view: 2.3...
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Journal Article
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 647–652.
FIGURES
Journal Article
Published: 28 January 2019
Journal of Sedimentary Research (2019) 89 (1): 66–87.
... of a pre-existing crystal, or can be restricted to its edges and/or corners. Restricted seeding is often linked with changes of crystal habit resulting in the reorientation of the crystal's fastest growth direction and the direction of maturation. Some impingement intercrystalline boundaries have offset...
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Journal Article
Published: 01 September 2018
The Canadian Mineralogist (2018) 56 (5): 763–772.
... County, California, U.S.A. It is an oxidation-zone mineral occuring in vugs. Crystals occur in a variety of habits, including bladed, acicular, steep pyramidal, and stepped tabular; they are generally elongate on [001] and exhibit the forms {001}, {110}, {111}, and . The mineral ranges in color from...
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Journal Article
Published: 01 July 2017
The Canadian Mineralogist (2017) 55 (4): 799–820.
... intensity in diffraction and highest probability to appear in the crystal habit. However, this indexing is confirmed by the analysis of interfacial angles: these were measured from a euclase crystal and compared to the theoretical ones calculated using Shape 7.3.0 software ( Dowty 1980 , 1987...
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Journal Article
Published: 05 April 2017
European Journal of Mineralogy (2017) 29 (5): 861–870.
... characteristics, besides being the most important relics of the technology. Due to their small size and growth habits, the micro-crystalline precipitates may remain unidentified on polished cross sections of the glazes. Thin-section petrography, combined with synchrotron-radiation X-ray micro-diffraction, appears...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 20 March 2017
Lithosphere (2018) 10 (1): 133–141.
... image of crystal habit of microdiamonds. Scale bar for F is 200 µm; for all other images, scale bar is 20 µm. (A–C) Cubo-octahedral polycrystalline form, Ray-Iz diamonds. (D) Partial cubo-octahedral form, Ray-Iz diamond. (E) Luobusa (peridotite) diamond. (F) Dodecahedroid form, Luobusa (peridotite...
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Journal Article
Published: 13 February 2017
European Journal of Mineralogy (2017) 29 (5): 915–922.
... habit and form fairly disordered aggregates. The mineral is associated with a large number of primary minerals (roscoelite, pyrite, uraninite, coffinite, ‘carbon’, galena, sphalerite, nickeloan cobaltite, covellite, tennantite and chalcopyrite) and supergene minerals (hydrozincite, aragonite, gordaite...
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Journal Article
Published: 01 February 2017
American Mineralogist (2017) 102 (2): 381–390.
...Han Li; Qi-Zhi Yao; Sheng-Hui Yu; Ya-Rong Huang; Xiang-Dong Chen; Sheng-Quan Fu; Gen-Tao Zhou Abstract Bacterially mediated struvite usually crystallizes as unusual morphologies. To better understand the relationship between growth habit of struvite and bacterial activity in struvite...
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Journal Article
Published: 19 September 2015
The Canadian Mineralogist (2015) 53 (2): 221–234.
... produce the enrichment in Al which can be linked to the forming of the acicular habit. Aluminum strongly prefers the Z -site, whose octahedra form a network of chains parallel to c . Consequently, polymerization of the Z O 6 octahedral network will dominate growth in the a direction. Therefore...
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Journal Article
Published: 01 August 2015
European Journal of Mineralogy (2015) 27 (4): 575–580.
FIGURES
Journal Article
Journal: Geology
Published: 01 January 2015
Geology (2015) 43 (1): 63–66.
... phaneritic granitoid rocks and aphanitic dikes in proximity to veins. Disseminated NaFe 3+ -amphiboles have fibrous habit either as epitaxial overgrowths on, or as replacement of, magmatic hornblende. Hematite-after-magnetite replacement textures were observed in thin section adjacent to NaFe 3+ -amphibole...
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Journal Article
Published: 01 October 2014
European Journal of Mineralogy (2014) 26 (5): 667–677.
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Journal Article
Published: 01 August 2014
European Journal of Mineralogy (2014) 26 (4): 495–505.
... allowed to dry out and observed under SEM. This examination allowed us to discern that very scattered rhombohedral calcite crystals ( Fig. 7a ), as well as some spherical crystals (with habits resembling those of vaterite; e.g. Ren et al. , 2011 ) grew either during the experiment or the subsequent...
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Journal Article
Published: 01 August 2014
European Journal of Mineralogy (2014) 26 (4): 507–516.
... of calcite structures in pearls may not be compared to biomineral structures in shells, which are better defined in terms of crystal habit and present a more constrained crystallographic control, in addition to having a strong correlation between crystallization and the formation of organic envelopes...
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