Characterization of sulfate ion in travertine

Takano, Bokuichiro; Asano, Yasuharu; Watanuki, Kunihiko

doi:10.1007/bf00399480

Cited by 36 publications

(23 citation statements)

References 24 publications

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“…The seasonal changes in the chemical properties of the drip water of the O-1 stalagmite, shown in Table 1, were relatively small and therefore DSO 4 was calculated to be 3.4 × 10 −5 using PHREEQC 17) and the average analytical values in Table 1. This value was in fairly good agreement with that obtained for the stalagmites from Saikai City, Nagasaki Prefecture, , suggesting that the sulfate in the stalagmite was coprecipitaed according to the ion-exchange equi- 34) as follows:…”

Section: Trace Constituent Contents In the Stalagmitessupporting

confidence: 85%

“…33) When a stalagmite grows as a result of calcite precipitation, the ions contained in the drip water coprecipitate. A ion is substituted for a ion during the precipitation process of calcite according to the ion-exchange equilibrium as follows: 34,35) .... ... (1) ......... (2) where DSO 4 is a distribution coefficient expressed by the activity ratios in the solid and solution phases. The seasonal changes in the chemical properties of the drip water of the O-1 stalagmite, shown in Table 1, were relatively small and therefore DSO 4 was calculated to be 3.4 × 10 −5 using PHREEQC 17) and the average analytical values in Table 1.…”

Section: Trace Constituent Contents In the Stalagmitesmentioning

confidence: 99%

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Sulfide Ore Smelting at the Naganobori Copper Mine Recorded on Speleothems from the Ogiri No. 4 Pit on the Akiyoshi-dai Plateau, Yamaguchi, Japan

et al. 2014

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Section: Trace Constituent Contents In the Stalagmitessupporting

confidence: 85%

Section: Trace Constituent Contents In the Stalagmitesmentioning

confidence: 99%

Sulfide Ore Smelting at the Naganobori Copper Mine Recorded on Speleothems from the Ogiri No. 4 Pit on the Akiyoshi-dai Plateau, Yamaguchi, Japan

et al. 2014

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“…The suggestion that S might be a component of mineralizing matrices have also been made (Blake and Peacor, 1981;Mackenzie et al, 1983). Applying the XANES method to a variety of inorganic and organic carbonates, Pingitore et al (1995) noted the "specificity and exclusivity" of XANES spectra but, following the interpretation of Takano et al (1980), they supported the mineralogical interpretation of SO 4 ions being substituted for CO 3 .…”

Section: Discussionmentioning

confidence: 99%

“…Particular attention should be paid to the XANES sulfated sulfur signal because sulfur in coral skeletons has long been reported (see Milliman, 1974). It was variously interpreted: as small amounts of CaSO 4 (Milliman), as sulfate ions (Takano et al, 1980) or sulfite (Bar-Matthews, 1993) substituting for CO 3 anions. The suggestion that S might be a component of mineralizing matrices have also been made (Blake and Peacor, 1981;Mackenzie et al, 1983).…”

Section: Discussionmentioning

confidence: 99%

The Environment Recording Unit in coral skeletons – a synthesis of structural and chemical evidences for a biochemically driven, stepping-growth process in fibres

2005

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Abstract. This paper gathers a series of structural and biochemical in situ characterizations carried out to improve our knowledge of the fine scale growth patterns of fibres in coral skeletons. The resulting data show a clear correspondence between the mineral subunits of fibres and the spatial distribution of organic macromolecules. New observations using atomic force microscope confirm the close relationship between mineral and organic phases at the nanometre scale.Synthesis of these data results in a significant change in our concept of the mineralization process in coral skeletons. In contrast to the usual view of an aggregate of purely mineral units independently growing by simple chemical precipitation, coral fibres appear to be fully controlled structures. Their growth process is based on cyclic secretion of mineralizing compounds by the polyp basal ectoderm. These biochemical components of the coral fibres, in which sulfated acidic proteoglycans probably play a major role, are repeatedly produced (proteoglycans are those glycoproteins whose carbohydrate moieties consist of long unbranched chains of sulfated amino sugars). This results in a stepping growth mode of fibres and a layered global organization of coral skeletons.Therefore, in contrast to the widely accepted geochemical interpretation, we propose a fibre growth model that places coral skeletons among the typical "matrix mediated" structures. The crystal-like fibres are built by superimposition of few micron-thick growth layers. A biomineralization cycle starts by the secretion of a mineralizing matrix and the final step is the crystallization phase, during which mineral material grows onto the organic framework. Thus, each growth layer is the actual Environment Recording Unit.Correspondence to: J. P. Cuif (cuif@geophy.geol.u-psud.fr) From a practical standpoint, these results may contribute to develop a new high resolution approach of the environment recording by coral skeletons.

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“…However, modern marine carbonate shells and tests from a variety of taxa reveal typical values from 0.1 to 1 % equivalent sulfate (Pingitore et al, 1995). Calcic travertine can contain up to 2.5 % SO3 (Takano et al, 1980). It is assumed therefore that the carbonates had higher sulfate contents originally, but expelled later and now depleted.…”

Section: Origin Of Ore Sulfur δmentioning

confidence: 99%

Origin of sulfur in some magmatic-hydrothermal ore deposits of South China.

舜三

平安

良道

et al. 2003

Bull. Geol. Surv. Japan

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Mill concentrates of ore sulfides from three magmatic-hydrotherml ore deposits were studied for δ 34 S at the granite-hosted Xihuashan deposits, and carbonate-hosted Shizhuan and Huashaping deposits. These ore deposits occur in the South China Fold System, which is composed of mid-Paleozoic "miogeosynclinal" sediments dominant in carbonates toward the Devonian age. Averages of the ore sulfides are -0.9 permil for the Xihuashan, +7.0 permil for the Shizhuan and +13.2 permil for the Huashaping deposits. Endogranitic ore sulfur of the Xihuashan and the Shizhuan deposits are considered magmatic, derived from by ca.+2 ‰ δ 34 S granitic magma, but the carbonate-hosted ore sulfurs at the major part of the Shizhuan and Huashaping deposits are much higher than those expected from rock sulfur δ 34 S values of the Yanshanian granites of the South China Fold System. Thus, addition of 34 S-enriched sulfur into the ore solutions is considered.Devonian and Carboniferous carbonates of the South China Fold System are very high in the δ 34 S values of structurally substituted sulfate (SSS) sulfur, averaged as +25.7 and +15.7 permil, respectively, which are higher than the reported values from other areas of these ages. The SSS contents of the Paleozoic carbonates are very low at present, but recent carbonates contain typically 0.1 to 1 % equivalent sulfate. The very low SSS contents in the wall rock carbonates and high δ 34 S values in the ore sulfides may have been resulted from carbonate SSS extracted during recrystallization and somehow mixed with magmatic ore fluids when the granitic magmas intruded, then precipitated as the ore sulfides.

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Characterization of sulfate ion in travertine

Cited by 36 publications

References 24 publications

Sulfide Ore Smelting at the Naganobori Copper Mine Recorded on Speleothems from the Ogiri No. 4 Pit on the Akiyoshi-dai Plateau, Yamaguchi, Japan

Sulfide Ore Smelting at the Naganobori Copper Mine Recorded on Speleothems from the Ogiri No. 4 Pit on the Akiyoshi-dai Plateau, Yamaguchi, Japan

The Environment Recording Unit in coral skeletons – a synthesis of structural and chemical evidences for a biochemically driven, stepping-growth process in fibres

Origin of sulfur in some magmatic-hydrothermal ore deposits of South China.

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