Philipsburgite from the Yamato mine, Yamaguchi Prefecture, Japan

Shirose, Yohei; Uehara, Satoshi

doi:10.2465/jmps.101021e

Cited by 5 publications

(9 citation statements)

References 4 publications

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“… †1) This study; 2) Suzuki (); 3) Ueno and Doi (); 4) Sekine (); 5) Miyake and Akatsuka (); 6) Ohnishi et al . (); 7) Shirose and Uehara (); and 8) Nishida ().…”

Section: Discussionmentioning

confidence: 99%

“…Recently, rare minerals preisingerite, which has an ideal formula of Bi 3 (AsO 4 ) 2 O(OH), and philipsburgite (Cu,Zn) 5 Zn(AsO 4 ,PO 4 ) 2 (OH) 6 ·H 2 O were found at the Yamato mine by Ohnishi et al . () and Shirose and Uehara (), respectively.…”

Section: Introductionmentioning

confidence: 97%

“…Ueno and Doi (1956) described massive sulfide ores consisting of chalcopyrite, pyrrhotite, arsenopyrite, sphalerite, wolframite, scheelite, galena, pyrite, bornite and others, and Sekine (1958) described the occurrence of wollastonite. Recently, rare minerals preisingerite, which has an ideal formula of Bi 3 (AsO 4 ) 2 O(OH), and philipsburgite (Cu,Zn) 5 Zn(AsO 4 ,PO 4 ) 2 (OH) 6 ·H 2 O were found at the Yamato mine by Ohnishi et al (2007) and Shirose and Uehara (2011), respectively.…”

Section: Introductionmentioning

confidence: 99%

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Ore and Skarn Mineralogy of the Yamato Mine, Yamaguchi Prefecture, Japan, with Emphasis on Silver‐, Bismuth‐, Cobalt‐, and Tin‐bearing Sulfides

2015

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Assemblages and chemical compositions of ore minerals from the Yamato mine, Yamaguchi Prefecture, Japan, were investigated in detail to clarify its characteristics as a skarn deposit. Special attention was paid to silver‐, bismuth‐, cobalt‐, and tin‐bearing sulfide minerals and native gold at the mine, which are described here for the first time. Samples of arsenopyrite‐dominant massive ore, and garnet‐rich, clinopyroxene‐garnet‐rich, and wollastonite‐bearing skarn ores were collected from the mine dump. Arsenopyrite is the most abundant ore mineral (>80 vol.%) in the massive ore, in association with both As‐poor/free and As‐bearing pyrite. The major ore minerals in the skarn specimens are pyrite, pyrrhotite, arsenopyrite, chalcopyrite, galena, and sphalerite, along with minor argentite, Ag‐Pb‐Bi sulfate, matildite, bismuthinite, native bismuth, molybdenite, scheelite, stannite, stannoidite, cassiterite, cobaltite, gersdorffite, and Co‐rich violarite. In addition, native gold is observed in the interstices of gangue minerals. Based on the mineral assemblages and textures of the specimens examined, the major ore minerals formed in the early stage of mineralization, and the Bi‐, Ag‐, Co‐, Ni‐, As‐ and Sn‐mineralization occurred in the middle stage. Native gold was deposited in the late stage. The estimated formation temperature of the middle mineralization stage was 312±5 °C, according to iron and zinc partitioning between stannite and coexisting sphalerite. The mineralogical properties and mineralization process of the Yamato mine are consistent with those of common skarn‐ and vein‐type ore deposits associated with ilmenite‐series granitoids in the San‐yo and San‐in districts.

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“… †1) This study; 2) Suzuki (); 3) Ueno and Doi (); 4) Sekine (); 5) Miyake and Akatsuka (); 6) Ohnishi et al . (); 7) Shirose and Uehara (); and 8) Nishida ().…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ore and Skarn Mineralogy of the Yamato Mine, Yamaguchi Prefecture, Japan, with Emphasis on Silver‐, Bismuth‐, Cobalt‐, and Tin‐bearing Sulfides

2015

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“…The Daido deposit, which is the principal ore occurrence in the skarn, consists mostly of chalcopyrite, with lesser scheelite, galena, and bornite, and also of garnet, hedenbergite, wollastonite, diopside, calcite, epidote, vesuvianite, and quartz in veins (Ueno & Doi, ). Preisingerite (Ohnishi et al, ) and philipsburgite (Shirose & Uehara, ) were recently found and these are the first occurrences of these minerals in Japan. Nagashima et al () provided a detailed description of the ore minerals in the mine, and shed light on the Bi–Ag–Co–Ni–As–Sn mineralization.…”

Section: Introductionmentioning

confidence: 99%

“…In the Ofuku region, the geology and mineral occurrences from ore deposits in Mine City, west of the Akiyoshi Plateau, have been studied at the Yamato, Fukurei, and Yamagami mines (Kato, ; Suzuki, ; Ueno & Doi, ; Sekine, ; Miyake & Akatsuka, ; Murakami et al, ; Shibuya, ; Ohnishi et al, ; Shirose & Uehara, ; Nishida, ). However, the pluton (the Ofuku pluton in this paper) has not yet been studied in detail, even though it also contributed to the formation of the deposit.…”

Section: Introductionmentioning

confidence: 99%

The Cretaceous Ofuku Pluton and Its Relation to Mineralization in the Western Akiyoshi Plateau, Yamaguchi Prefecture, Japan

et al. 2016

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The relationship between the magmatism of the Cretaceous Ofuku pluton and mineralization in and around the Akiyoshi Plateau, Yamaguchi Prefecture, Japan was investigated using a combination of field observation, petrographic and geochemical analyses, K–Ar geochronology, and fluid inclusion data. The Ofuku pluton has a surface area of 1.5 × 1.0 km, and was intruded into the Paleozoic accretionary complexes of the Akiyoshi Limestone, Ota Group and Tsunemori Formation in the western part of the Akiyoshi Plateau. The pluton belongs to the ilmenite‐series and is zoned, consisting mainly of early tonalite and granodiorite that share a gradational contact, and later granite and aplite that intruded the tonalite and granodiorite. Harker diagrams show that the Ofuku pluton has intermediate to silicic compositions ranging from 60.4 to 77.9 wt.% SiO2, but a compositional gap exists between 70.5 to 73.4 wt.% SiO2 (anhydrous basis). Modal and chemical variations indicate that the assumed parental magma is tonalitic. Quantitative models of fractional crystallization based on mass balance calculations and the Rayleigh fractionation model using major and trace element data for all crystalline phases indicate that magmatic fractionation was controlled mainly by crystal fractionation of plagioclase, hornblende, clinopyroxene and orthopyroxene at the early stage, and quartz, plagioclase, biotite, hornblende, apatite, ilmenite and zircon at the later stage. The residual melt extracted from the granodiorite mush was subsequently intruded into the northern and western parts of the Ofuku pluton as melt lens to form the granite and aplite. The age of the pluton was estimated at 99–97 Ma and 101–98 Ma based on K–Ar dating of hornblende and biotite, respectively. Both ages are consistent within analytical error, indicating that the Ofuku pluton and the associated Yamato mine belong to the Tungsten Province of the San‐yo Belt, which is genetically related to the ilmenite‐series granitoids of the Kanmon to Shunan stages. The aplite contains Cl‐rich apatite and REE‐rich monazite‐(Ce), allanite‐(Ce), xenotime and bastnäsite‐(Ce), indicating that the residual melt was rich in halogens and REEs. The tonalite–granodiorite of the Ofuku pluton contains many three‐phase fluid inclusions, along with daughter minerals such as NaCl and KCl, and vapor/liquid (V/L) volume ratios range from 0.2 to 0.9, suggesting that the fluid was boiling. In contrast, the granite and aplite contain low salinity two‐phase inclusions with low V/L ratios. The granodiorite occupies a large part of the pluton, and the inclusions with various V/L ratios with chloride daughter minerals suggest the boiling fluids might be related to the mineralization. This fluid could have carried base metals such as Cu and Zn, forming Cu ore deposits in and around the Ofuku pluton. The occurrence and composition of fluid inclusions in the igneous rocks from the Akiyoshi Plateau are directly linked to Cu mineralization in the area, demonstrating that fluid inclusions are useful indic...

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Site-selective As–P substitution and hydrogen bonding in the crystal structure of philipsburgite, Cu5Zn((As,P)O4)2(OH)6·H2O

et al. 2018

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Philipsburgite from the Yamato mine, Yamaguchi Prefecture, Japan

Cited by 5 publications

References 4 publications

Ore and Skarn Mineralogy of the Yamato Mine, Yamaguchi Prefecture, Japan, with Emphasis on Silver‐, Bismuth‐, Cobalt‐, and Tin‐bearing Sulfides

Ore and Skarn Mineralogy of the Yamato Mine, Yamaguchi Prefecture, Japan, with Emphasis on Silver‐, Bismuth‐, Cobalt‐, and Tin‐bearing Sulfides

The Cretaceous Ofuku Pluton and Its Relation to Mineralization in the Western Akiyoshi Plateau, Yamaguchi Prefecture, Japan

Site-selective As–P substitution and hydrogen bonding in the crystal structure of philipsburgite, Cu5Zn((As,P)O4)2(OH)6·H2O

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