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Parasibirskite

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Fuka mine, Bitchu-cho (Bicchu-cho), Takahashi, Okayama Prefecture, Chugoku Region, Honshu Island, Japan
© Sergey Vasiliev

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Formula:
Ca
 
2
[B
 
2
O
 
5
] · H
 
2
O
System:MonoclinicColour:White
Lustre:VitreousHardness:3
Name:For its relationship to sibirskite
This page provides mineralogical data about Parasibirskite.

Classification of Parasibirskite

IMA status:Approved 1996
Strunz 8th edition ID:5/H.02-40
Nickel-Strunz 10th (pending) edition ID:6.BC.20

6 : BORATES
B : Diborates
C : Ino-diborates with triangles and/or tetrahedra
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Type Occurrence of Parasibirskite

Type Locality:Fuka mine, Bitchu-cho (Bicchu-cho), Takahashi, Okayama Prefecture, Chugoku Region, Honshu Island, Japan

Physical Properties of Parasibirskite

Lustre:Vitreous
Colour:White
Streak:White
Hardness (Mohs):3

Crystallography of Parasibirskite

Crystal System:Monoclinic

Optical Data of Parasibirskite

Type:Biaxial (+)
RI values: nα = 1.556 nβ = 1.593 nγ = 1.663
Maximum Birefringence:δ = 0.107

Chart 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 Parasibirskite

Formula:
Ca
 
2
[B
 
2
O
 
5
] · H
 
2
O
Essential elements:B, Ca, H, O
All elements listed in formula:B, Ca, H, O

Relationship of Parasibirskite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
6.BC.10Calciborite
Ca[B
 
2
O
 
4
]
6.BC.15Vimsite
CaB
 
2
O
 
2
(OH)
 
4
6.BC.20Sibirskite
Ca
 
2
[(OH)(B
 
2
O
 
4
(OH))]

Other Names for Parasibirskite

Synonyms:
IMA1996-051
Other Languages:
German:Parasibirskit
Spanish:Parasibirskita

Other Information

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

References for Parasibirskite

Reference List:Mineralogical Magazine (1998): 62: 521-525.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Parasibirskite

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    Localities for Parasibirskite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Japan
     
    • Honshu Island
      • Chugoku Region
        • Okayama Prefecture
          • Takahashi
            • Bitchu-cho (Bicchu-cho)
    		American Mineralogist (1999): 84: 686.; Journal of Mineralogical and Petrological Sciences Vol. 99 (2004) , No. 2 April 67-71
    Mineral and/or Locality
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