Tychite Mineral Data

Tychite Mineral Data
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General Tychite Information

Help on Chemical Formula: Chemical Formula: Na6Mg2(CO3)4(SO4)
Help on Composition: Composition: Molecular Weight = 522.65 gm
   Sodium     26.39 %  Na   35.58 % Na2O
   Magnesium   9.30 %  Mg   15.42 % MgO
   Carbon      9.19 %  C    33.68 % CO2
   Sulfur      6.14 %  S    15.32 % SO3
   Oxygen     48.98 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na6Mg2(CO3)4(SO4)
Help on Environment: Environment: Continental evaporite deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1905
Help on Locality: Locality: Borax Lake, San Bernardino Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for "luck or chance" because out of 5,000 northupite crystals, the last 10 were tychite.
Help on Name Pronunciation: Name Pronunciation: Tychite Say TYCHITE
Help on Synonym: Synonym: ICSD 27792
  PDF 22-479
 

Tychite Image

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Tychite

Comments: Nearly transparent tychite crystal.
Location: Searles Lake, San Bernardino County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tychite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 13.898, Z = 8; V = 2,684.46 Den(Calc)= 2.59
Help on Crystal System: Crystal System: Isometric - DiploidalH-M Symbol (2/m 3) Space Group: F d3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.674(1), 4.187(0.76), 2.459(0.4),
Click Here for Large Tychite Structure Window Crystal Structure:

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Schmidt G R , Reynard J , Yang H , Downs R T , Acta Crystallographica, Section E , 62 (2006) p.i207-i209, Tychite, Na6Mg2(SO4)(CO3)4: Structure analysis and Raman spectroscopic data, Locality: Searles Lake, Trona, San Bernardino County, California, USA

View Additional jPOWD Structure files for Tychite
[1] [2]
 

Physical Properties of Tychite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.5
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luminescence: Luminescence: Fluorescent, Long UV=cream-white.
Help on Luster: Luster: Vitreous (Glassy)
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Tychite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.038 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.001 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1969,KPDmeas= 0.204,KC= 0.1966
Ncalc = 1.49 - 1.51
Help on Optical Data: Optical Data: Isotropic, n=1.51.
 

Calculated Properties of Tychite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.56 gm/cc
note: Specific Gravity of Tychite =2.59 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PETychite = 1.11 barns/electron
U=PETychite x rElectron Density= 2.83 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tychite is Not Radioactive
 

Tychite Classification
Help on Dana Class: Dana Class: 17.01.01.01 (17)Compound Carbonates
  (17.01)with miscellaneous formulae
  (17.01.01)Tychite Group
 
17.01.01.01 Tychite Na6Mg2(CO3)4(SO4) F d3 2/m 3
 
17.01.01.02 Ferrotychite Na6Fe2(SO4)(CO3)4 F d3 2/m 3
 
17.01.01.03 Manganotychite Na6(Mn,Fe,Mg)2(SO4)(CO3)4 F d3 2/m 3
Help on Strunz Class: Strunz Class: 05.BF.05 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BF -With (Cl), SO4, PO4, TeO3
 
05.BF.05 Ferrotychite Na6Fe2(SO4)(CO3)4 F d3 2/m 3
 
05.BF.05 Manganotychite Na6(Mn,Fe,Mg)2(SO4)(CO3)4 F d3 2/m 3
 
05.BF.05 Northupite Na3Mg(CO3)2Cl F d3 2/m 3
 
05.BF.05 Tychite Na6Mg2(CO3)4(SO4) F d3 2/m 3
 

Other Tychite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Tychite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Tychite

Na6Mg2(CO3)4(SO4)
Dana No: 17.01.01.01 Strunz No: 05.BF.05
Locality:

 

Notes: