Teepleite Mineral Data (original) (raw)

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

Click Here for Larger Teepleite Image in a New Browser Window Images:

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 DipyramidalH-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:

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| | Forms:( 0 1 1) ( 1 1 0) ( 0 0 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | --------------------------------------------------------------------------------------------------------------------------------------------------- |

Click Here for Large Teepleite Structure Window Crystal Structure:

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| | Effenberger H , Acta Crystallographica, Section B , 38 (1982) p.82-85, Verfeinerung der kristallstruktur von synthetischem teepleit, Locality: synthetic | | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |

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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Ask about Teepleite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

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

Teepleite

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

Notes: