Qilianshanite Mineral Data

Qilianshanite Mineral Data +

General Qilianshanite Information

Chemical Formula:

NaH4(CO3)(BO3)·2(H2O)

Composition:

Molecular Weight = 181.87 gm

Sodium 12.64 % Na 17.04 % Na₂O

Boron 5.94 % B 19.14 % B₂O₃

Hydrogen 4.43 % H 39.62 % H₂O

Carbon 6.60 % C 24.20 % CO₂

Oxygen 70.38 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaH₄(CO₃)(BO₃)·2(H₂O)

IMA Status:

Approved IMA 1993

Locality:

Link to MinDat.org Location Data.

Synonym:

IMA1992-008

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Qilianshanite Crystallography

Axial Ratios:

a:b:c =2.3266:1:0.9714

Cell Dimensions:

a = 16.119, b = 6.928, c = 6.73, Z = 4; beta = 100.46° V = 739.07 Den(Calc)= 1.63

Crystal System:

Monoclinic - SphenoidalH-M Symbol (2) Space Group: C 2

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.464(1), 3.173(0.59), 1.731(0.19),

Physical Properties of Qilianshanite

Cleavage:

[100] Perfect, [010] Perfect

Color:

Colorless.

Density:

1.706

Diaphaniety:

Transparent

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Qilianshanite

Gladstone-Dale:

CI meas= 0.023 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.265,KPDmeas= 0.2532,KC= 0.2593

Optical Data:

Biaxial (-), a=1.351, b=1.459, g=1.486, bire=0.1350, 2V(Calc)=48, 2V(Meas)=50.

Calculated Properties of Qilianshanite

Electron Density:

r_electron=1.68 gm/cc
note: r_{Qilianshanite}=1.63 gm/cc.

Fermion Index

Fermion Index = 0.01289
Boson Index = 0.98711

Photoelectric:

PE_{Qilianshanite}= 0.48 barns/electron
U=PE_{Qilianshanite} x r_electron= 0.81 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Qilianshanite is Not Radioactive

Qilianshanite Classification

Dana Class:

17.1.13.1 (17)Compound Carbonates

(17.1)with miscellaneous formulae

(17.1.13)Dana Group

17.1.13.1 Qilianshanite NaH4(CO3)(BO3)·2(H2O) C 2 2

Strunz Class:

V/G.06-60 V - Nitrates, Carbonates and Borates

V/G - "Insel" borates [BO3]3- "inseln"

V/G.06 - Berborite - Qilianshanite series

V/G.06-10 Berborite Be2(BO3)(OH,F)·(H2O) P 6₃ 6

V/G.06-20 Wightmanite Mg5(BO3)O(OH)5·2(H2O) I2/m 2/m

V/G.06-30 Shabynite Mg5(BO3)Cl2(OH)5·4(H2O) Unk. Mono

V/G.06-40 Canavesite Mg2(CO3)(HBO3)·5(H2O) P 2/m 2/m

V/G.06-50 Sakhaite Ca3Mg(BO3)2(CO3)·0.36(H2O) F 4₁32 4 3 2

V/G.06-60 Qilianshanite NaH4(CO3)(BO3)·2(H2O) C 2 2

Other Qilianshanite Information

References:

PHYS. PROP.(Am.Min.,Vol.79,p765,1994) OPTIC PROP.(Am.Min.,Vol.79,p765,1994)

See Also:

Links to other databases for Qilianshanite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Qilianshanite

NaH4(CO3)(BO3)·2(H2O)
Dana No: 17.1.13.1 Strunz No: V/G.06-60
Locality:

Notes: