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![First thumbnail for: Chiyokoite, Ca 3 Si(CO 3 )[B(OH) 4 ]O(OH) 5 ·12H 2...]()
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![First thumbnail for: NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW...]()
![Second thumbnail for: NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW...]()
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![Geological map around the Fuka mine, Okayama Prefecture, western Japan (modified from Omae et al. 2002).]()
![Photographs of numanoite from the Fuka mine. (a) Core of borcarite crystal. (b) Veinlet in aggregates of borcarite crystals. Abbreviations: Nm: numanoite, Bc: borcarite, Cal: calcite.]()
![Photomicrographs of the core of numanoite in borcarite from the Fuka mine. (a) Plane light. (b) Crossed nicols.]()
![Infrared absorption spectra of numanoite and borcarite from the Fuka mine.]()
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![TG–DTA curves for numanoite and borcarite from the Fuka mine.]()
![The compositions of numanoite and borcarite from the Fuka mine in terms of the components Cu–Mg–Zn. Symbols are the same as in Figure 7a.]()
![First thumbnail for: THE CRYSTAL STRUCTURE OF OLSHANSKYITE]()
![Second thumbnail for: THE CRYSTAL STRUCTURE OF OLSHANSKYITE]()
![Third thumbnail for: THE CRYSTAL STRUCTURE OF OLSHANSKYITE]()
![First thumbnail for: Shimazakiite-4 M and shimazakiite-4 O , Ca 2 B 2 O...]()
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![Compositional variation of Cu versus Mg in numanoite and borcarite from the Fuka mine. Center, outer and veinlet reveal the result of the chemical analyses in Nm (center), Nm (outer) (Figs. 3, 4a), and Nm veinlet (Fig. 2b), respectively.]()
![BSE image and X-ray images of element distribution in numanoite from the Fuka mine. (a) BSE image, (b) CaKα image, (c) CuKα image and (d) MgKα image. Abbreviation: M: unidentified magnesium silicate mineral.]()
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Journal Article
Chiyokoite, Ca 3 Si(CO 3 )[B(OH) 4 ]O(OH) 5 ·12H 2 O, a new ettringite-group mineral from the Fuka mine, Okayama Prefecture, Japan Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 24 November 2020
The Canadian Mineralogist (2020) 58 (5): 653–662.
..., was found in a hydrothermally altered calc-silicate skarn at the Fuka mine, Okayama Prefecture, Japan. Associated minerals are calcite, henmilite, and tacharanite. Chiyokoite occurs as hexagonal prismatic crystals up to 30 μm long and up to 20 μm thick. The major forms are the hexagonal prism {10 0...
FIGURES
![First thumbnail for: Chiyokoite, Ca 3 Si(CO 3 )[B(OH) 4 ]O(OH) 5 ·12H 2...](https://gsw.silverchair-cdn.com/gsw/Content_public/Journal/canmin/58/5/10.3749_canmin.2000030/4/s_i1499-1276-58-5-653-f01.png?Expires=1755364983&Signature=zWsEBsd6GBzQqnmAzlqRq-6AojHN~FIife-Zte5S5dlDvJmHaaDzP-lb~sCUDulX1m5CccfmUaCxr2UL52yik-34ftBL6hQ4CLV1TOIOE7zh1roHdmIxtia84rJs2wAOwiuV~uwQSAnvioNDtxZc2ZlFplyVDGrlIhymvauhXDz7WkK8V05nNiL0ZAE36yzpGFX7QPWdj5aiGfNUNRA1urwsIiS9J7eQugSyABLjsLfyzYk1dsDZh0WJDhZC38N~7AsyVH9WgePIVlO6LveP5t9J3UWsRFjKlyKoQIKnyq~ItU2lnhDaocQ0L8x48ZoIZLvp~JCWtza3BHodGGLFzQ__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
![Second thumbnail for: Chiyokoite, Ca 3 Si(CO 3 )[B(OH) 4 ]O(OH) 5 ·12H 2...](https://gsw.silverchair-cdn.com/gsw/Content_public/Journal/canmin/58/5/10.3749_canmin.2000030/4/s_i1499-1276-58-5-653-f02.png?Expires=1755364983&Signature=jh8KGNyfKIp1mgJGiDnF5IZxK19WOBgelUQlCNJ8RHnVqpkcowrLuO1gwNc0c7nvfoh204DP4QQxqs2zBaj2RHts0tDHqO-~sf2q6hdbLouPZopO9sqJwITbAjrEs3cwxw2MFOY3607xbqQk54cEJ19yMNMpga~5y1ZX46AOZLNqUCJfMALqqPp326qsmmi3Sd8TiSne~u~wZZ8M6Eyc~UrD5lEe2XrdidNPwZ5W9HQkholpC3Fc0jSKdvUu-OVUc8mQlH~XVRuVuCt3aRTVGSTuLVrUDlVgMuLK1IQEgrkYR3FPEyglHAHkB1z-tGGnKcoOX9y5aMSiA8o4KJxlBg__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
![Third thumbnail for: Chiyokoite, Ca 3 Si(CO 3 )[B(OH) 4 ]O(OH) 5 ·12H 2...](https://gsw.silverchair-cdn.com/gsw/Content_public/Journal/canmin/58/5/10.3749_canmin.2000030/4/s_i1499-1276-58-5-653-f03.png?Expires=1755364983&Signature=XlukgQyqaX293okwhL2VhPRhJ5VHb~jvvFt37z39WGeiLiR4AnK-iEooQeY0jQpf3LMXyMjo~JrHVCJsiJpZPmKZiVsVCK0J3pkeDHD7CbeI6uuax0rgBMJ-3IJwnBc~XnfYnbcAxlWEHWyd9Wj-k4FBp-SqbGOf1ajU6MeCFO0YqCDlF7xv33deRpAVhnQvFJ5bHsDsuik4xDZaPBag9AV0EPbpR0bCzD6N-nsufsd4tMHGm7CY7~Zj6zoylMBXgCtJjl01E44F6zH~hCm7RJDbMqbAD3~qQWZ~w4P6n8kwLyWj1LaiTB6h7I7u1q7DAmWCbU0701uXyGge9UJVoA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Journal Article
Dehydration processes in borate minerals: pentahydroborite and nifontovite from Fuka Mine, Okayama Prefecture, Japan Available to Purchase
Journal: Mineralogical Magazine
Published: 01 December 2010
Mineralogical Magazine (2010) 74 (6): 1013–1025.
...V. Bermanec; N. Tomašić; Ž. Žigovečki Gobac; M. Rajić Linarić; K. Furić Abstract Data on the dehydration of pentahydroborite, CaB 2 O(OH) 6 ·2H 2 O and nifontovite, Ca 3 B 6 O 6 (OH) 12 ·2H 2 O from the Fuka mine, Japan are presented. Critical temperatures of the dehydration of the borates...
FIGURES
Journal Article
NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 April 2007
The Canadian Mineralogist (2007) 45 (2): 307–315.
...Masayuki Ohnishi; Isao Kusachi; Shoichi Kobayashi; Junji Yamakawa; Mitsuo Tanabe; Shigetomo Kishi; Takashi Yasuda Abstract Numanoite, the Cu analogue of borcarite, is found in an irregular patch in crystalline limestone near gehlenite–spurrite skarns at the Fuka mine, Okayama Prefecture, Japan...
FIGURES
Image
Geological map around the Fuka mine, Okayama Prefecture, western Japan (mod... Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
F ig . 1. Geological map around the Fuka mine, Okayama Prefecture, western Japan (modified from Omae et al. 2002 ).
Image
Photographs of numanoite from the Fuka mine. (a) Core of borcarite crystal.... Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
F ig . 2. Photographs of numanoite from the Fuka mine. (a) Core of borcarite crystal. (b) Veinlet in aggregates of borcarite crystals. Abbreviations: Nm: numanoite, Bc: borcarite, Cal: calcite.
Image
Photomicrographs of the core of numanoite in borcarite from the Fuka mine. ... Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
F ig . 3. Photomicrographs of the core of numanoite in borcarite from the Fuka mine. (a) Plane light. (b) Crossed nicols.
Image
Infrared absorption spectra of numanoite and borcarite from the Fuka mine. Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
F ig . 5. Infrared absorption spectra of numanoite and borcarite from the Fuka mine.
Image
CHEMICAL COMPOSITION OF NUMANOITE AND BORCARITE FROM THE FUKA MINE AND STAN... Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
TABLE 2. CHEMICAL COMPOSITION OF NUMANOITE AND BORCARITE FROM THE FUKA MINE AND STANDARDS USED IN ANALYSES
Image
TG–DTA curves for numanoite and borcarite from the Fuka mine. Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
F ig . 6. TG–DTA curves for numanoite and borcarite from the Fuka mine.
Image
The compositions of numanoite and borcarite from the Fuka mine in terms of ... Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
F ig . 8. The compositions of numanoite and borcarite from the Fuka mine in terms of the components Cu–Mg–Zn. Symbols are the same as in Figure 7a .
Journal Article
THE CRYSTAL STRUCTURE OF OLSHANSKYITE Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 February 2001
The Canadian Mineralogist (2001) 39 (1): 137–144.
...Athos Callegari; Fiorenzo Mazzi; Carla Tadini Abstract X-ray intensity data for olshanskyite, Ca 2 [B 3 O 3 (OH) 6 ]OH·3H 2 O, were collected from a crystal from the Fuka mine, Okayama Prefecture, Japan, using a PW1100 Philips single-crystal diffractometer. Olshanskyite is triclinic, a 7.953(4), b...
FIGURES
Journal Article
Henmilite, Ca 2 Cu(OH) 4 [B(OH) 4 ] 2 , a new mineral from Fuka, Okayama Prefecture, Japan; I, Occurrence and description Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 October 1986
American Mineralogist (1986) 71 (9-10): 1234–1236.
...Izumi Nakai; Hisashi Okada; Kazunosuke Masutomi; Eiji Koyama; Kozo Nagashima Abstract Henmilite, Ca 2 Cu(OH) 4 [B(OH) 4 ] 2 , has been found in borate veins cutting marble exposed at the Fuka mine, Fuka, Okayama. It is triclinic, space group P 1 , a = 5.7617(5), b = 7.9774(6), c = 5.6488(4) Å, α...
Journal Article
Shimazakiite-4 M and shimazakiite-4 O , Ca 2 B 2 O 5 , two polytypes of a new mineral from Fuka, Okayama Prefecture, Japan Available to Purchase
Journal: Mineralogical Magazine
Published: 01 February 2013
Mineralogical Magazine (2013) 77 (1): 93–105.
... in nanometre-sized twin lamellae and the latter in micrometre-sized lamellae. Shimazakiite was discovered in an irregular vein in crystalline limestone near gehlenite-spurrite skarns at Fuka mine, Okayama Prefecture, Japan. Associated minerals include takedaite, sibirskite, olshanskyite, parasibirskite...
FIGURES
Journal Article
Okayamalite, Ca 2 B 2 SiO 7 , a new mineral, boron analogue of gehlenite Available to Purchase
Journal: Mineralogical Magazine
Published: 01 October 1998
Mineralogical Magazine (1998) 62 (5): 703–706.
... on the ideal formula is 3.30 g/cm 3 . It is optically uniaxial negative with omega = 1.700, and epsilon = 1.696. It occurs as patches of a few millimetres across in grey homogeneous-looking aggregate of wollastonite, vesuvianite, calcite and johnbaumite from Fuka mine, Bicchu-cho, Okayama Prefecture, Japan...
Image
PHYSICAL AND OPTICAL PROPERTIES OF NUMANOITE AND BORCARITE FROM THE FUKA MI... Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
TABLE 1. PHYSICAL AND OPTICAL PROPERTIES OF NUMANOITE AND BORCARITE FROM THE FUKA MINE
Image
REPRESENTATIVE X-RAY POWDER DIFFRACTION DATA FOR NUMANOITE AND BORCARITE FR... Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
TABLE 3. REPRESENTATIVE X-RAY POWDER DIFFRACTION DATA FOR NUMANOITE AND BORCARITE FROM THE FUKA MINE
Image
Compositional variation of Cu versus Mg in numanoite and borcarite from t... Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
F ig . 7. Compositional variation of Cu versus Mg in numanoite and borcarite from the Fuka mine. Center, outer and veinlet reveal the result of the chemical analyses in Nm (center), Nm (outer) ( Figs. 3 , 4a ), and Nm veinlet ( Fig. 2b ), respectively.
Image
BSE image and X-ray images of element distribution in numanoite from the Fu... Available to Purchase
in NUMANOITE, Ca 4 CuB 4 O 6 (OH) 6 (CO 3 ) 2 , A NEW MINERAL SPECIES, THE Cu ANALOGUE OF BORCARITE FROM THE FUKA MINE, OKAYAMA PREFECTURE, JAPAN
> The Canadian Mineralogist
Published: 01 April 2007
F ig . 4. BSE image and X-ray images of element distribution in numanoite from the Fuka mine. (a) BSE image, (b) Ca K α image, (c) Cu K α image and (d) Mg K α image. Abbreviation: M: unidentified magnesium silicate mineral.
Journal Article
Role of temperature and CO 2 pressure in the formation of skarn and its bearing on mineralization Available to Purchase
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 July 1975
Economic Geology (1975) 70 (4): 739–749.
... of range of 550 degrees C and 600 degrees C. The barren skarn at Fuka (Japan), which is similar in many respects to that of Kilchoan, is inferred to have formed at relatively higher temperatures. The vesuvianite-bearing skarn of the Mitate mine (Japan) formed at a lower temperature compared...
Journal Article
Japan Association of Mineralogical Sciences Free
Journal: Elements
Publisher: Mineralogical Society of America
Published: 01 February 2021
Elements (2021) 17 (1): 48.
... and non eclogite units along the Kokuryo River of the Sanbagawa belt, Central Shikoku, Japan Masaki ENAMI, Shuaimin HUANG, Motohiro TSUBOI and Yuki WAKASUGI CO2 distribution in CO2 rich melanophlogite from Fortunillo, Tuscany, Italy Masami KANZAKI Fedorovskite from the Fuka mine, Okayama Prefecture...
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