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Burpalite Mineral Data

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General Burpalite Information

Help on Chemical  Formula: Chemical Formula: Na2CaZrSi2O7F2
Help on Composition: Composition: Molecular Weight = 383.45 gm
   Sodium     11.99 %  Na   16.16 % Na2O
   Calcium    10.45 %  Ca   14.62 % CaO
   Zirconium  23.79 %  Zr   32.14 % ZrO2
   Silicon    14.65 %  Si   31.34 % SiO2
   Oxygen     29.21 %  O
   Fluorine    9.91 %  F     9.91 % F
                -   %   F    -4.17 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2CaZrSi2O7F2
Help on Environment: Environment: In a fenitized hornfelsic sandstone in the contact zone of an alkalic intrusive.
Help on IMA Status: IMA Status: Approved IMA 1990
Help on Locality: Locality: In the Burpala massif, about 120 km north of Lake Baikal, eastern Siberia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For its occurrence in the Burpala massif, Russia.
Help on Name Pronunciation: Name Pronunciation: Burpalite + Pronunciation Say BURPALITE
Help on Synonym: Synonym: ICSD 89269
  PDF 42-1322
 

Burpalite Image

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  Burpalite

Comments: Yellow crystalline grains of burpalite.
Location: Burpala, Transbaikal, Republic of Buryatia, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Burpalite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9686:1:0.6946
Help on Cell Dimensions: Cell Dimensions: a = 10.1173, b = 10.4446, c = 7.2555, Z = 4; beta = 90.039° V = 766.70 Den(Calc)= 3.32
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.95(1), 2.87(0.6), 3.3(0.4),
 

Physical Properties of Burpalite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Colorless, Yellowish.
Help on Density: Density: 3.33
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Burpalite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.045 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.042 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1908,KPDmeas= 0.1902,KC= 0.1991
Ncalc = 1.66
Help on Optical Data: Optical Data: Biaxial (-), a=1.627, b=1.634, g=1.639, bire=0.0120, 2V(Calc)=80, 2V(Meas)=80.1.
 

Calculated Properties of Burpalite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.19 gm/cc
note: Specific Gravity of Burpalite =3.32 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEBurpalite = 34.00 barns/electron
U=PEBurpalite x rElectron Density= 108.34 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Burpalite is Not Radioactive
 

Burpalite Classification

Help on  Dana Class: Dana Class: 56.02.04.02 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
  (56.02)with cations in [4] and/or >[4] coordination
  (56.02.04)Cuspidine - Wohlerite group
 
56.02.04.01 Baghdadite Ca3(Zr,Ti)Si2O9 P 21/a 2/m
 
56.02.04.02 Burpalite Na2CaZrSi2O7F2 P 21/a 2/m
 
56.02.04.03 Cuspidine Ca4Si2O7(F,OH)2 P 21/c 2/m
 
56.02.04.04 Lavenite (Na,Ca)2(Mn,Fe)(Zr,Ti,Nb)Si2O7(O,OH,F) P 21/a 2/m
 
56.02.04.05 Wohlerite NaCa2(Zr,Nb)Si2O7(O,OH,F)2 P 21/m 2/m
 
56.02.04.06 Niocalite Ca14Nb2(Si2O7)4O6F2 Pa m
 
56.02.04.07 Hiortdahlite (Ca,Na,Y)3(Zr,Ti)Si2O7(F,O,OH)2 P1 1
 
56.02.04.08 Rosenbuschite (Ca,Na)3(Zr,Ti)Si2O8F P1 1
 
56.02.04.09 Hainite Na4Ca8(Ti,Zr,Mn,Fe)3Si8O28F8 P1 1
 
56.02.04.10 Janhaugite (Na,Ca)3(Mn,Fe)3(Ti,Zr,Nb)2Si4O15(OH,F,O)3 P 21/n 2/m
 
56.02.04.11 Jennite Ca9Si6O18(OH)6•8H2O P1 1
 
56.02.04.12 Komarovite (Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2•3.5(H2O) Unk Ortho
 
56.02.04.13 Natrokomarovite* Na6CaNb6[Si4O12F2•4(H2O) C mmm 2/m 2/m 2/m
 
56.02.04.14 Suolunite Ca2Si2O5(OH)2•(H2O) F dd2 mm2
 
56.02.04.15 Mongolite Ca4Nb6Si5O24(OH)10•5(H2O) Unk Tetra
 
56.02.04.16 Kristiansenite! Ca2ScSn(Si2O7)(Si2O6OH) C1 1
 
56.02.04.17 Kochite! Na2(Na,Ca)4Ca4(Mn,Ca)2Zr2Ti2(Si2O7)4(O,F)4F4 P1 1
 
56.02.04.18 Marianoite! Na2Ca4(Nb,Zr)2(Si2O7)2(O,F)4 P 21 2/m
Help on  Strunz Class: Strunz Class: 09.BE.17 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BE -Si2O7 groups with additional anions;
 
09.BE.17 Baghdadite Ca3(Zr,Ti)Si2O9 P 21/a 2/m
 
09.BE.17 Janhaugite (Na,Ca)3(Mn,Fe)3(Ti,Zr,Nb)2Si4O15(OH,F,O)3 P 21/n 2/m
 
09.BE.17 Burpalite Na2CaZrSi2O7F2 P 21/a 2/m
 
09.BE.17 Cuspidine Ca4Si2O7(F,OH)2 P 21/c 2/m
 
09.BE.17 Hiortdahlite (Ca,Na,Y)3(Zr,Ti)Si2O7(F,O,OH)2 P1 1
 
09.BE.17 Lavenite (Na,Ca)2(Mn,Fe)(Zr,Ti,Nb)Si2O7(O,OH,F) P 21/a 2/m
 
09.BE.17 Niocalite Ca14Nb2(Si2O7)4O6F2 Pa m
 
09.BE.17 Normandite! NaCa(Mn,Fe)(Ti,Nb,Zr)Si2O7(O,F)2 P 21/a 2/m
 
09.BE.17 Wohlerite NaCa2(Zr,Nb)Si2O7(O,OH,F)2 P 21/m 2/m
 
09.BE.17 Marianoite! Na2Ca4(Nb,Zr)2(Si2O7)2(O,F)4 P 21 2/m
 

Other Burpalite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.76,p665,1991) OPTIC PROP.(Am.Min.,Vol.76,p665,1991)
Help on See Also: See Also: Links to other databases for Burpalite :
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
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Burpalite Specimen Label here :

Burpalite

Na2CaZrSi2O7F2
Dana No: 56.02.04.02 Strunz No: 09.BE.17
Locality:

 

Notes:

 

 
   
 


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