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Parasibirskite

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About ParasibirskiteHide

Formula:
Ca2(B2O5) · H2O
Colour:
White
Lustre:
Pearly
Hardness:
3
Crystal System:
Monoclinic
Name:
Named derives from the Greek 'para' for near, and sibirskite, for the polymorphic relationship to that mineral.
This page provides mineralogical data about Parasibirskite.


Classification of ParasibirskiteHide

Approved
Approval Year:
1996
First Published:
1998
6.BC.20

6 : BORATES
B : Diborates
C : Ino-diborates with triangles and/or tetrahedra

Physical Properties of ParasibirskiteHide

Pearly
Colour:
White
Streak:
White
Hardness:

Optical Data of ParasibirskiteHide

Type:
Biaxial (+)
RI values:
nα = 1.556 nβ = 1.593 nγ = 1.663
Max Birefringence:
δ = 0.107
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong

Chemical Properties of ParasibirskiteHide

Formula:
Ca2(B2O5) · H2O
IMA Formula:
Ca2B2O5 · H2O

Crystallography of ParasibirskiteHide

Crystal System:
Monoclinic

Type Occurrence of ParasibirskiteHide

Place of Conservation of Type Material:
National Science Museum, Tokyo, Japan.
Geological Setting of Type Material:
Pyrometasomatic products of limestone, later hydrothermally altered.
Reference:
Kusachi, I., Takechi, Y., Henmi, C., Kobayashi, S. (1998) Parasibirskite, a new mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine: 62: 521-525.

Synonyms of ParasibirskiteHide

Other Language Names for ParasibirskiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Spurrite1 photo of Parasibirskite associated with Spurrite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

6.BC.10CalciboriteCa(B2O4)Orth.
6.BC.15VimsiteCaB2O2(OH)4Mon.
6.BC.20SibirskiteCa2(HB2O5)(OH)Mon.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for ParasibirskiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Kusachi, I., Takechi, Y., Henmi, C., Kobayashi, S. (1998) Parasibirskite, a new mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine: 62: 521-525.
Jambor, J.L., Puziewicz, J., Roberts, A.C. (1999) New mineral names. American Mineralogist: 84: 685-688.
Takahashi, R., Kusachi, I., Miura, H. (2010) Crystal structure of parasibirskite (CaHBO3) and polymorphism in sibirskite and parasibirskite. Journal of Mineralogical and Petrological Sciences: 105: 70-73.
Sun, W., Huang, Y.X., Li, Z., Pan, Y., Mi, J.X. (2011) Hydrothermal synthesis and single-crystal X-ray structure refinement of three borates: sibirskite, parasibirskite and priceite. The Canadian Mineralogist: 49: 823-834.

Internet Links for ParasibirskiteHide

Localities for ParasibirskiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Japan (TL)
 
  • Honshu Island
    • Chugoku Region
      • Okayama Prefecture
        • Takahashi City
          • Bicchu-cho (Bitchu-cho)
            • Fuka
American Mineralogist (1999): 84: 686.; Journal of Mineralogical and Petrological Sciences Vol. 99 (2004) , No. 2 April 67-71; I. Kusachi, Y. Takechi, C. Henmi and S. Kobayashi (1998) Parasibirskite, a New Mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine 62:521-525.
Mineral and/or Locality  
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