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)

Environment:

Reaction of borate-rich waters with earlier sodium carbonates in a borate deposit.

IMA Status:

Approved IMA 1993

Locality:

Juhongtu borate deposit, Qilian Mountains, Qinghai Province, China. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Qilianshanite + Pronunciation

Synonym:

IMA1992-008

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 - Sphenoidal H-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

Diaphaneity:

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
Ncalc = 1.42 - 1.44

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:

Bulk Density (Electron Density)=1.68 gm/cc
note: Specific Gravity of Qilianshanite =1.63 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Qilianshanite is Not Radioactive

Qilianshanite Classification

Dana Class:

17.01.13.01 (17)Compound Carbonates

(17.01)with miscellaneous formulae

(17.01.13)Dana Group

17.01.13.01 Qilianshanite NaH4(CO3)(BO3)•2(H2O) C 2 2

Strunz Class:

06.HA.55 06 - BORATES

06.H - Unclassified Borates

06.HA -Unclassified borates

06.HA.55 Qilianshanite NaH4(CO3)(BO3)•2(H2O) C 2 2

Other Qilianshanite Information

References:

NAME( AntBidBlaNic3) 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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Qilianshanite

NaH4(CO3)(BO3)•2(H2O)
Dana No: 17.01.13.01 Strunz No: 06.HA.55
Locality:

Notes:

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