Sonolite, a New Manganese Silicate Mineral

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Description

Sonolite, a new silicate mineral being the manganese analogue of clinohumite, occurs as fine-grained prismatic to anhedral crystals associated with rhodochrosite, galaxite, pyrochroite etc. from Sono, Hanawa, and Kusugi mines and other eight localities. Physical and optical properties of the mineral from Hanawa mine are : dull reddish orange in color ; hardness, 5.5 ; specific gravity, 3.82 (meas.) and 3.97 (calc.) ; colorless in thin section；biaxial negative with α=1.763, β=1.779, γ=1.793, (-)2V=75.5°-82°, ρ＞v, single or lamellae twinning on (001), (001)^X=9°-10°. Monoclinic with a_0=10.66_4Å b_0=4.88_2Å, c_0=14.29_9 Å, β=100°34’. The Chemical formula of sonolite from Hanawa mine is evaluated as (Mn_<7.80> Fe<0.16> Mg_<1.05> Ca_<0.16>）_<9.17>(Si_<3.45> Al_<0.62> Ti_<0.01>)_<4.08> O_<15.91>[(OH)_ <1.95>F_<0.14>]_<2.09>. Its ideal formula is Mn_9Si_4O_<16>(OH, F)_2 or 4Mn_2SiO_4･Mn(OH, F)_2. The mineral from Kusugi mine is also described. The mineral is named after Sono mine where the mineral was first found from. Relations of the mineral to alleghanyite and to humite group are discussed.

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Details 詳細情報について

  • CRID
    1390290699732345216
  • NII Article ID
    120006875943
  • NII Book ID
    AA00732897
  • DOI
    10.5109/1543583
  • HANDLE
    2324/1543583
  • ISSN
    00236179
  • Text Lang
    en
  • Article Type
    departmental bulletin paper
  • Data Source
    • JaLC
    • IRDB
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • Abstract License Flag
    Allowed

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