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Journal Article
Journal: Geology
Published: 13 February 2025
Geology (2025) 53 (5): 398–403.
...Griffin Easthouse; William Hoover; Fang-Zhen Teng; Cailey Condit; Courteney Pike; Ze-Zhou Wang; Anna Berg; Peter Wynn; Lauren Woods; Eirini Poulaki Abstract Talc-rich metasomatic rocks in subduction interface shear zones profoundly influence seismicity and arc magmatism, but their petrogenesis...
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First thumbnail for: Formation of <span class="search-highlight">talc</...
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Journal Article
Published: 01 October 2024
American Mineralogist (2024) 109 (10): 1819–1833.
...) Sample ID Mineralogy H#893 GE1 stibnite, metastibnite, talc-smectite (?) H#893 GE2 stibnite, metastibnite, talc-smectite (?) H#886 GE3 stibnite, metastibnite, talc-smectite (?) Figure 4. ( a ) XRD pattern of sample H#893 GE1 (Wakamiko Crater) showing the presence of stibnite...
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First thumbnail for: Mineralogical and geochemical facets of the massiv...
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Journal Article
Published: 18 January 2024
The Canadian Journal of Mineralogy and Petrology (2024) 62 (1): 107–116.
..., and 40 K/min at temperatures of up to 1260 K. Thermogravimetric data of clinochlore at different heating rates were modeled using the Kissinger method, Flynn-Wall-Ozawa method, and Coats-Redfern method. The dehydration of clinochlore is ascribed to the decomposition of brucite and talc layers...
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First thumbnail for: Thermal Decomposition Kinetics of Clinochlore at H...
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Series: EMU Notes in Mineralogy series
Publisher: Mineralogical Society of the United Kingdom and Ireland
Published: 01 January 2024
DOI: 10.1180/EMU-notes.21.6
EISBN: 9780903056687
... of each diagram, a schematic compatibility diagram is shown, illustrating the stable phases. In the ternary diagrams, abbreviations are: atg – antigorite, br – brucite, en – enstatite, fo – forsterite, hfo – hydrous forsterite, per – periclase, q – quartz, ta – talc, solid solutions (melt and hydrous...
Journal Article
Published: 01 March 2023
Jour. Geol. Soc. India (2023) 99 (3): 345–356.
...Ratul Banerjee; Bijay K. Biswas; Sisir K. Mondal Abstract The metamorphosed ultramafic-mafic bodies of the Kudada area are located close to the Singhbhum Shear Zone (SSZ) in eastern India, where the major rock types are talc-magnesite schist and serpentinite with accessory chromite and magnetite...
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First thumbnail for: Origin of Alteration Patterns in Accessory Chromit...
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Journal Article
Published: 03 January 2023
American Mineralogist (2023) 108 (1): 127–139.
... with the breakdown of antigorite to forsterite and talc; thus, this reaction may have triggered these earthquakes. However, previous studies have overlooked the potential significance of this reaction. Here, we performed a series of time-dependent dehydration experiments on antigorite at a pressure of 200 MPa...
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First thumbnail for: Potential link between antigorite dehydration and ...
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Journal Article
Journal: Clay Minerals
Published: 26 September 2022
Clay Minerals (2022) 57 (2): 87–96.
..., muscovite and chlorite, as well as the corresponding magnesium silicate minerals, talc, serpentine and phlogopite (Du & Miller, 2007 ). Theoretically, pyrophyllite (Al 4 Si 8 O 20 (OH) 4 ) is composed of 66.65% SiO 2 , 28.35% Al 2 O 3 and 5.00% H 2 O, and it is a dioctahedral 2:1 clay mineral...
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First thumbnail for: The beneficiation of the Pütürge pyrophyllite ore ...
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Journal Article
Published: 03 January 2022
American Mineralogist (2022) 107 (1): 1–14.
... the importance of optical mineralogy and the role it played in areas outside of academics. As such, new optical data are presented herein on 20 well-characterized talc samples from other studies, as there appears to have been no thorough study of the optical properties of talc. Other than academic interest...
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First thumbnail for: MSA at 100 and why optical mineralogy still matter...
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Journal Article
Published: 01 December 2021
American Mineralogist (2021) 106 (12): 1957–1970.
..., including talc, illite, silica, albite, ilmenite, and ferrihydrite formed as a result of reduction. The results highlight the importance of coupled C and Fe biogeochemical transformations and have implications for nutrient cycling and contaminant migration in the environment. Time course production...
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First thumbnail for: Reduction of structural Fe(III) in nontronite by h...
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Journal Article
Published: 01 September 2021
American Mineralogist (2021) 106 (9): 1480–1487.
... unloading stiffness, from which the elastic properties are determined. The indirect indentation method developed here has demonstrated accurate determination of the elastic properties of many common geological materials as well as materials that have resisted elastic characterization such as galena and talc...
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First thumbnail for: A new method to rapidly and accurately assess the ...
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Journal Article
Published: 19 May 2021
Geochemistry: Exploration, Environment, Analysis (2021) 21 (2): geochem2020-065.
... O 3 , Ni/Cr v. Ni/Ti, and MgO v. Cr. (6) Identify and quantify talc alteration and serpentinization. This included the use of a new alteration plot (Mg# v. 1410 nm RAD /Albedo) to estimate serpentinization and identify relationships between serpentine, carbonate, chlorite and talc abundances...
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First thumbnail for: Characterization of altered mafic and ultramafic r...
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Journal Article
Journal: Geosphere
Published: 23 December 2020
Geosphere (2021) 17 (1): 306–321.
... a small Jurassic(?) pluton, the following mineral zones occur: periclase (hydrated to brucite), forsterite (variably hydrated to serpentine and typically accompanied by clinohumite), tremolite, and talc. Airborne Vis-NIR imaging spectrometer data with 5 m ground resolution shows serpentine and tremolite...
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First thumbnail for: Mapping metamorphic hydration fronts with field-ba...
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Journal Article
Published: 01 October 2020
American Mineralogist (2020) 105 (10): 1536–1546.
... of fine-grained and poorly ordered 1:1 and 2:1 layer silicates, commonly referred to as non-expandable serpentine-like (SL) and talc-like (TL) minerals. New data on the swelling and shrinking capacity of these layer silicates were gathered from X-ray diffraction (XRD) after saturation of the clay...
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Journal Article
Published: 01 June 2020
American Mineralogist (2020) 105 (6): 873–893.
...Takayoshi Nagaya; Atsushi Okamoto; Ryosuke Oyanagi; Yusuke Seto; Akira Miyake; Masaoki Uno; Jun Muto; Simon R. Wallis Abstract Talc is widely distributed over the Earth's surface and is predicted to be formed in various tectonic settings. Talc is a very soft and anisotropic sheet silicate showing...
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First thumbnail for: Crystallographic preferred orientation of <span cl...
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Journal Article
Published: 20 February 2020
Environmental & Engineering Geoscience (2020) 26 (1): 21–28.
... serpentinites, various greenstones, amphibolites, blueschist, and other schists (talc-tremolite, actinolite, etc.). These rocks are a legacy of tectonic activity that occurred on the west coast margin of the North American plate ∼65–150 MY ago during subduction of the East Pacific and Farallon plates...
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Journal Article
Published: 20 February 2020
Environmental & Engineering Geoscience (2020) 26 (1): 9–14.
... and Clinkenbeard, 2011 ): serpentine, tremolite/actinolite, winchite/richterite Phyllites (sodium-metasomatized) ( Albino, 1995 ): riebeckite Schists ( Higgins and Clinkenbeard, 2006 ): tremolite/actinolite, anthophyllite Shonkinite carbonatite and syenite ( Olson et al., 1954 ): riebeckite Talc...
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Journal Article
Published: 11 December 2019
Bulletin de la Société Géologique de France (2019) 190 (1): 14.
... of serpentinized lherzolites tectonic lenses separated by anastomosed shear zones is capped by a thin upper damage zone made up of strongly sheared talc-chlorite schists invaded by pyrite crystallization. The cover décollement is a few decameter-thick fault zone resulting from the brecciation of Upper Triassic...
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First thumbnail for: Mantle exhumation at magma-poor passive continenta...
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Journal Article
Published: 01 September 2019
European Journal of Mineralogy (2019) 31 (5-6): 945–962.
... activities associated with the dislocation and early alteration of the ophiolite nappe. They result from two kinds of Ni-ore-forming processes and reveal a significant decrease in the mobility of Ni over time. The first process relates the step-by-step alteration of serpentine species into talc-like (TL...
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First thumbnail for: An alternative model for the formation of hydrous ...
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Journal Article
Published: 01 October 2018
Mineralogical Magazine (2018) 82 (5): 1187–1210.
...Marie-Lola Pascal; Michel Fonteilles; Véronique Tournis; Benoît Baptiste; Jean-Louis Robert; Jean-Claude Boulliard ABSTRACT Ba-rich and Si-rich phlogopites occur in the talc-bearing rocks of the La Creuse sulfide ore deposit in Beaujolais, France. They form a group of compositions completely...
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First thumbnail for: Ba-, Si- and vacancy-rich phlogopites from the <sp...
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Journal Article
Published: 01 June 2018
American Mineralogist (2018) 103 (6): 989–992.
... + 7 talc → 3 eckermannite + 3 pyrope + 13 coesite + 4 H 2 O, above the stability limit of glaucophane that is defined by the reaction glaucophane → 2 jadeite + talc. Compositions of phases relevant to this study are shown in Figure 1 . The starting material for the experiments was a mixture...
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First thumbnail for: Sodium amphibole in the post-glaucophane high-pres...
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