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  

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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 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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