Results 91 to 100 of about 16,702 (208)
Acrostic Poems: Poe\u27s Cosmic Art? [PDF]
, 1970 The following poems illustrate various forms of word-play. A common acrostic thread (the title is spelled out by the first letters of the various lines) unites all the poems; however, each poem contains additional features of logological interest.
Shedlofsky, Walter
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The behavior of major and trace elements of the tourmaline from the Mangavai and Ganjnameh pegmatitic rocks (Hamadan area) [PDF]
پترولوژی, 2016 The Mangavai and Ganjnameh pegmatitic rocks are part of the Alvand granitoid pluton in the Sanandaj-Sirjan zone. The composition of tourmaline in Mangavi is Schorl and that of the Ganjnameh lies in the Schorl- foitite fields.
Ahmad Ahmadi khalaji +3 more
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Записки Горного институтаIn the Severny pluton in Chukotka, an association of rare-metal, tin-bearing topaz-zinnwaldite greisens (zwitters) and tourmaline metasomatites has been identified through geological mapping and mineralogical-petrographic studies.
Viktor I. Alekseev +2 more
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Tourmaline and Rutile as Indicators of a Magmatic-hydrothermal Origin for Tourmalinite Layers in the São José do Barreiro Area, NE Ribeira Belt, Southern Brazil [PDF]
Geologia USP. Série Científica, 2010 Tourmalines from tourmaline-rich layers intercalated with schists of the Rio Una Unit of the Embu Complex and fromcoarse-grained tourmalinite layers associated with quartzite from São José do Barreiro and Formoso (Central Ribeira Belt,São Paulo State ...
Gianna Maria Garda +3 more
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Yankuang ceshi, 2017 Tourmaline is a boron-containing aluminosilicate mineral, which is an important non-metallic mineral resource, and an indicator for rock-forming and ore-forming processes.
CHENG Xue-hai +4 more
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Journal of Spectroscopy, 2018 In order to better understand the effect of transition metal cations on color of tourmaline, X-ray photoelectron spectroscopy was used to investigate the species, chemical state, site occupancy, and chemical environment of color-induced metal cations in ...
Ming Li +5 more
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Degradation of Methyl Blue Using Fe-Tourmaline as a Novel Photocatalyst
Molecules, 2013 This study investigated the photocatalytic activity of tourmaline by itself. Under irradiation of a 13 W, 254 nm UV lamp, 50% of methyl blue disappeared in the presence of 130 mg·L−1 tourmaline. The reaction was inhibited by the addition of ethanol, Cl−,
Rong Ji, Jianqiu Chen, Xuesen Bian
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Heavy Minerals In Placer Deposit In Singkawang Waters, West Kalimantan, Related To Felsic Source Rock Of Its Coastal Area [PDF]
, 2010 Placer deposits are physically accumulated by fluvial and marine processes in coastal area. Thirty six samples were selected from seventy seven samples of seafloor sediment of Singkawang waters.
Aryanto, N. C. (Noor) +1 more
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The Macquenoise sandstone : a suitable Lochkovian raw material for ancient millstones : quarries, properties, manufacture and distribution (Belgium-France) [PDF]
, 2016 International audienceSince a few years a French-Belgian team of archeologists and geologists work on the characterization of ancient quern stones and millstones (mainly from the Antique period) linked with the identification of their stratigraphical and
Cnudde, Veerle +7 more
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