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Togari, K., Akasaka, M. (1987) Okhotskite, a new mineral, an Mn3+-dominant member of the pumpellyite group, from the Kokuriki mine, Hokkaido, Japan. Mineralogical Magazine, 51 (362) 611-614 doi:10.1180/minmag.1987.051.362.17

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Reference TypeJournal (article/letter/editorial)
TitleOkhotskite, a new mineral, an Mn3+-dominant member of the pumpellyite group, from the Kokuriki mine, Hokkaido, Japan
JournalMineralogical MagazineISSN0026-461X
AuthorsTogari, K.Author
Akasaka, M.Author
Year1987 (October)Volume51
Issue362
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_51/51-362-611.pdf+
DOIdoi:10.1180/minmag.1987.051.362.17Search in ResearchGate
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Mindat Ref. ID1431Long-form Identifiermindat:1:5:1431:5
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Full ReferenceTogari, K., Akasaka, M. (1987) Okhotskite, a new mineral, an Mn3+-dominant member of the pumpellyite group, from the Kokuriki mine, Hokkaido, Japan. Mineralogical Magazine, 51 (362) 611-614 doi:10.1180/minmag.1987.051.362.17
Plain TextTogari, K., Akasaka, M. (1987) Okhotskite, a new mineral, an Mn3+-dominant member of the pumpellyite group, from the Kokuriki mine, Hokkaido, Japan. Mineralogical Magazine, 51 (362) 611-614 doi:10.1180/minmag.1987.051.362.17
In(1987, October) Mineralogical Magazine Vol. 51 (362) Mineralogical Society
Abstract/NotesAbstractOkhotskite, an Mn3+-dominant pumpellyite-group mineral, is monoclinic, A2/m, a = 8.887, b = 6.000, c = 19.55 Å, β = 97.08°, Z = 1. The formula is(Ca7.63Na0.17K0.01)Σ7.81(Mn2.752+Mg1.10)Σ3.85(Mn4.503+Al1.87Fe1.613+Ti0.02)Σ8.00Si12.13O39.71(OH)16.29,which simplifies to Ca8(Mn2+,Mg)4(Mn3+,Al,Fe3+)8Si12O5∂-n(OH)n. Strong lines in the X-ray powder diffraction pattern are: 4.76(60)(004, 111), 3.87(70)(202), 2.96(100)(115, 300), 2.88(25)(022), 2.72(70)(302), 2.67(45)(3̄04, 3̄11), 2.55(45)(024, 3̄13) and 2.38(45)(304).Its colour is deep orange with a pale orange streak and vitreous lustre. Transparent. Non-fluorescent. H6 (Mohs). Density (calc.) = 3.40 g/cm3. Optically biaxial negative, 2V(meas) = 46(5)°, 2V(calc) = 46°, dispersion indiscernible. Refractive indices: α = 1.782(5), β = 1.820(5), γ = 1.827(5). Orientation: Y = b, c∧Z = 9–14° in acute angle of β. Pleochroism is distinct: X yellow, Y and Z deep orange. Absorption: X < Y < Z.This mineral occurs as fine prisms up to 0.2 mm long and forms aggregates in network veinlets cutting hematite ore from the Kokuriki mine in the Tokoro district, eastern Hokkaido, Japan. Associated minerals are: hematite, piemontite, quartz, neotocite, bementite, apatite, Mn-oxides, inesite and rhodochrosite. The mineral is named okhotskite for the Sea of Okhotsk, along which the mine is located.

See Also

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Togari, K., & Akasaka, M. (1987). Okhotskite, a new mineral, an Mn3+-dominant member of the pumpellyite group, from the Kokuriki mine, Hokkaido, Japan. Mineralogical Magazine, 51(62), 611-614.
Togari, K. & Akasaka, M. (1987) Okhotskite, a new mineral, a manganese ion(3+)-dominant member of the pumpellyite group, from the Kokuriki mine, Hokkaido, Japan. Mineralogical Magazine: 51: 611-614.
Togari, K., Akasaka, M., Kawaguchi, Y. (1986) Inesite from the Kokuriki Mine, Hakkaido, Japan. Journal of the Faculty of Science, Hokkaido University, Ser. IV: 21(4): 669-677.
Kenji Togari, Masahide Akasaka and Yoshiyuki Kawaguchi (1986) INESITE FROM THE KOKURIKI MINE, HOKKAIDO, JAPAN. Jour. Fac. Sci., Hokkaido Univ., Ser. IV, vol. 21, no. 4, Feb., 1986, pp. 669-677.
Nickel, E. H., Temperly, J. E. (1987) Arsenoflorencite-(Ce): a new arsenate mineral from Australia. Mineralogical Magazine, 51 (362) 605-609 doi:10.1180/minmag.1987.051.362.16
Nakata, M., Honma, H., Chung, J. I., Sakurai, K. (1989) Frohbergite from the Kobetsuzawa mine, Sapporo, Hokkaido, Japan. Mineralogical Magazine, 53 (371) 387-388 doi:10.1180/minmag.1989.053.371.18
Shimizu, M., Kato, A., Matsubara, S., Criddle, A. J., Stanley, C. J. (1993) Watanabeite, Cu4(As,Sb)2S5, a new mineral from the Teine mine, Sapporo, Hokkaido, Japan. Mineralogical Magazine, 57 (389) 643-649 doi:10.1180/minmag.1993.057.389.08
Akasaka, M., Kimura, Y., Omori, Y., Sakakibara, M., Shinno, I., Togari, K. (1997) 57Fe Mössbauer study of pumpellyite-okhotskite-julgoldite series minerals. Mineralogy and Petrology, 61 (1) 181-198 doi:10.1007/bf01172483
Weiser, Th., Barth, H. (1996) An unnamed platinum-group mineral from the Iluma Hill mine, Tanzania. Mineralogical Magazine, 60 (401) 672-673 doi:10.1180/minmag.1996.060.401.17
Akizuki, Mizuhiko (1987) An explanation of optical variation in yugawaralite. Mineralogical Magazine, 51 (362) 615-620 doi:10.1180/minmag.1987.051.362.18
Sato, E., Nakai, I., Terada, Y., Tsutsumi, Y., Yokoyama, K., Miyawaki, R., Matsubara, S. (2011) Beaverite-(Zn), Pb(Fe2Zn)(SO4)2(OH), a new member of the alunite group, from Mikawa Mine, Niigata Prefecture, Japan. Mineralogical Magazine, 75 (2) 375-377 doi:10.1180/minmag.2011.075.2.375
 
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