山梨県増富温泉における温泉沈殿物の化学組成  [in Japanese] Chemical composition of the spring deposits from the Masutomi spring, Yamanashi Prefecture  [in Japanese]

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Author(s)

Abstract

The ferruginous and calcareous spring deposits collected from Niusawa, Togetsuan and Tsuganero, Masutomi spring district, Yamanashi Prefecture, were analyzed and the chemical characteristics, change in chemical composition during the flow and the relationship between the spring water and the deposit were studied. (1) Near the outlet, there are ferruginous deposits which contain much amount of SiO<sub>2</sub>, Na<sub>2</sub>O, K<sub>2</sub>O, P<sub>2</sub>O<sub>5</sub>, Cu, Zn, Ba and Ra. On the other hand, calcareous deposits are at the downflow, contain much amount of MgO. (2) At Niusawa, the contents of Na<sub>2</sub>O, K<sub>2</sub>O, P<sub>2</sub>O<sub>5</sub>, Cu, Ba, and Ra decreased with the distance from the outlet, which are correlated with the content of Fe<sub>2</sub>O<sub>3</sub>. While SiO<sub>2</sub> is abundant in the ferruginous deposits, Si/Fe ratio increased with the distance from the outlet. It is inferred that the amount of coprecipitated SiO<sub>2</sub> depends on the pH of the spring water. (3) The spring water temperature as well as the concentrations of Fe<sup>2+</sup>, HCO<sub>3</sub><sup>-</sup> and Ca<sup>2+</sup> decreased and pH increased during the flow. Calcium carbonate is in supersaturation. Its ion activity product is 3 times larger at inlet and 27 times larger at calcareous deposit than its solubility product. The Sr distribution coefficient between calcium carbonate and spring water is 0.17 which is in good agreement with the other data obtained from calcite.

Journal

  • Chikyukagaku

    Chikyukagaku 23(2), 77-83, 1989

    The Geochemical Society of Japan

Cited by:  3

Codes

  • NII Article ID (NAID)
    110008679832
  • NII NACSIS-CAT ID (NCID)
    AN00141280
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0386-4073
  • NDL Article ID
    3649741
  • NDL Source Classification
    ME34(水文学--陸水)
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z15-645
  • Data Source
    CJPref  NDL  NII-ELS  J-STAGE 
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