Mineralogy Database

Teepleite Mineral Data

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General Teepleite Information

Help on Chemical  Formula: Chemical Formula: Na2B(OH)4Cl
Help on Composition: Composition: Molecular Weight = 160.27 gm
   Sodium    28.69 %  Na   38.67 % Na2O
   Boron      6.74 %  B    21.72 % B2O3
   Hydrogen   2.52 %  H    22.48 % H2O
   Chlorine  22.12 %  Cl   22.12 % Cl
               -   %   Cl   -4.99 % -O=Cl2   
   Oxygen    39.93 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2B(OH)4Cl
Help on Environment: Environment: Continental evaporate deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1939
Help on Locality: Locality: Borax lake, SE edge of Clear Lake, Lake Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for John Edgar Teeple (1874-1931), for his work on the chemistry of Searles Lake brines, Trona, California, USA.
Help on Name Pronunciation: Name Pronunciation: Teepleite + Pronunciation Say TEEPLEITE
Help on Synonym: Synonym: ICSD 32518
  PDF 12-Nov
 

Teepleite Image

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  Teepleite

Comments: Tan bladed crystals teepleite on massive halite.
Location: Borax Lake, Lake County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Teepleite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.66804
Help on Cell Dimensions: Cell Dimensions: a = 7.26, c = 4.85, Z = 2; V = 255.63 Den(Calc)= 2.08
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.697(1), 2.015(0.9), 2.9(0.8),
Help on Forms: Forms:

Mouse
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RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

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I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
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Help on Above

Forms: ( 0 1 1) ( 1 1 0) ( 0 0 1)

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Physical Properties of Teepleite

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.076
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: white
 

Optical Properties of Teepleite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.076 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.078 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2457,KPDmeas= 0.2461,KC= 0.2665
Ncalc = 1.55
Help on Optical Data: Optical Data: Uniaxial (-), e=1.503, w=1.519, bire=0.0160.
 

Calculated Properties of Teepleite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.07 gm/cc
note: Specific Gravity of Teepleite =2.08 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PETeepleite = 2.00 barns/electron
U=PETeepleite x rElectron Density= 4.14 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Teepleite is Not Radioactive
 

Teepleite Classification

Help on  Dana Class: Dana Class: 25.01.04.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.01)Dana Type
  (25.01.04)Dana Group
 
25.01.04.01 Teepleite Na2B(OH)4Cl P 4/nmm 4/m 2/m 2/m
 
25.01.04.02 Bandylite CuB(OH)4Cl P 4/nmm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 06.AC.40 06 - BORATES
  06.A - Monoborates
  06.AC -B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc.
 
06.AC.40 Teepleite Na2B(OH)4Cl P 4/nmm 4/m 2/m 2/m
 

Other Teepleite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Teepleite :
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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Teepleite

Na2B(OH)4Cl
Dana No: 25.01.04.01 Strunz No: 06.AC.40
Locality:

 

Notes:

 

 
   
 


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