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Qilianshanite

Formula:
NaHCO
 
3
 · H
 
3
BO
 
3
 · 2H
 
2
O
System:MonoclinicColour:Colourless
Hardness:2
Name:Named after its discovery locality.
This page provides mineralogical data about Qilianshanite.

Classification of Qilianshanite

IMA status:Approved 1992
Strunz 8th edition ID:5/G.06-60
Nickel-Strunz 10th (pending) edition ID:6.HA.55

6 : BORATES
H : Unclassified borates
A :
Dana 8th edition ID:17.1.13.1

17 : COMPOUND CARBONATES
1 : Miscellaneous
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Type Occurrence of Qilianshanite

Type Locality:Juhongtu Boron deposit, Yumen Co., Jiuquan Prefecture, Gansu (Ganzu) Province, China
Year of Discovery:1993

Physical Properties of Qilianshanite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colourless
Hardness (Mohs):2

Crystallography of Qilianshanite

Crystal System:Monoclinic
Cell Parameters:a = 16.11Å, b = 6.92Å, c = 6.73Å
β = 100.46°
Ratio:a:b:c = 2.328 : 1 : 0.973
Unit Cell Volume:V 737.80 ų (Calculated from Unit Cell)

Optical Data of Qilianshanite

Type:Biaxial (-)
RI values: nα = 1.351 nβ = 1.459 nγ = 1.486
2V:Measured: 50° , Calculated: 48°
Maximum Birefringence:δ = 0.135

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:none

Chemical Properties of Qilianshanite

Formula:
NaHCO
 
3
 · H
 
3
BO
 
3
 · 2H
 
2
O
Essential elements:B, C, H, Na, O
All elements listed in formula:B, C, H, Na, O
Common Impurities:Ca

Relationship of Qilianshanite to other Species

Related Minerals - Nickel-Strunz Grouping):
6.HA.05Chelkarite
CaMgB
 
2
O
 
4
(Cl,OH)
 
2
·5H
 
2
O Or near, with Cl:OH = 3:1
6.HA.10Braitschite-(Ce)
(Ca,Na
 
2
)
 
7
(Ce,La)
 
2
B
 
22
O
 
43
·7H
 
2
O
6.HA.15Satimolite
KNa
 
2
Al
 
4
[Cl|B
 
2
O
 
5
]
 
3
 · 13H
 
2
O
6.HA.20Iquiqueite
K
 
3
Na
 
4
Mg(CrO
 
4
)B
 
24
O
 
39
(OH)·12H
 
2
O
6.HA.25Wardsmithite
Ca
 
5
Mg[B
 
4
O
 
7
]
 
6
 · 30H
 
2
O
6.HA.35Halurgite
Mg
 
2
[B
 
4
O
 
7
]
 
2
 · 5H
 
2
O
6.HA.40Ekaterinite
Ca
 
2
[(Cl,OH)
 
2
|B
 
4
O
 
7
] · 2H
 
2
O
6.HA.45Vitimite
Ca
 
6
[(OH)
 
14
|SO
 
4
|B
 
14
O
 
19
]·5H
 
2
O
6.HA.50Canavesite
Mg
 
2
[CO
 
3
|HBO
 
3
] · 5H
 
2
O

Other Names for Qilianshanite

Synonyms:
IMA1992-008
German names:
Qilianshanit
Spanish names:
Qilianshanita

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 Qilianshanite

Reference List:Luo Shiqing, Lu Jian'an, Wang Liben, and Zhu Jingqing (1993): Qilianshanite - A new boric carbonate mineral. Acta Mineralogica Sinica 13(2), 97-101 (in Chinese with English abstract). - New Minerals (1997), New Minerals 1990-1994 (abstract).

American Mineralogist (1994), 79, 765.

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

Internet Links for Qilianshanite

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    Localities for Qilianshanite

    (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.
    China
     
    • Gansu (Ganzu) Province
      • Jiuquan Prefecture
        • Yumen Co.
    		Luo Shiqing, Lu Jian'an, Wang Liben, and Zhu Jingqing (1993): Acta Mineralogica Sinica 13(2), 97-101.
    Mineral and/or Locality
    Google
     
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