Carbon and Oxygen Isotope Compositions of Calcite and Rhodochrosite from Geothermal Exploratory Drills TH‐4 and TH‐6 near the Toyoha Deposit, Hokkaido, Japan
Carbon and Oxygen Isotope Compositions of Calcite and Rhodochrosite from Geothermal Exploratory Drills TH‐4 and TH‐6 near the Toyoha Deposit, Hokkaido, Japan
复制标题
日本北海道丰叶矿床附近地热勘探钻 TH-4 和 TH-6 中方解石和菱锰矿的碳和氧同位素组成
DOI：
10.1111/j.1751-3928.2011.00156.x
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发表时间：
2011
期刊：
影响因子：
1.4
通讯作者：
A. Inoue
中科院分区：
文献类型：
--
作者：
M. Nitta;A. Inoue
从稳定同位素地球化学的角度，结合流体包裹体均一温度的测定，对位于日本北海道西南部丰叶矿床附近的勘探岩芯(TH-4和TH-6)中的方解石和菱锰矿进行了研究。钻芯中观察到的蚀变可划分为四个带：矿石矿化带、混层矿物带、高岭土矿物带和早生岩带。除高岭土矿带外，方解石在各带均有分布。菱锰矿赋存于与铁、锰绿泥石、硫化物共生的矿化带中，矿物组合与丰叶脉基本一致。
We studied calcite and rhodochrosite from exploratory drill cores (TH‐4 and TH‐6) near the Toyoha deposit, southwestern Hokkaido, Japan, from the aspect of stable isotope geochemistry, together with measuring the homogenization temperatures of fluid inclusions. The alteration observed in the drill cores is classified into four zones: ore mineralized zone, mixed‐layer minerals zone, kaolin minerals zone, and propylitic zone. Calcite is widespread in all the zones except for the kaolin minerals zone. The occurrence of rhodochrosite is restricted in the ore mineralized zone associated with Fe, Mn‐rich chlorite and sulfides, the mineral assemblage of which is basically equivalent to that in the Toyoha veins.
影响因子：
3.3
作者：
Y. Morishita;T. Nakano
通讯作者：
Y. Morishita;T. Nakano