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Yeelimite Mineral Data

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General Yeelimite Information

Help on Chemical  Formula: Chemical Formula: Ca4Al6O12(SO4)
Help on Composition: Composition: Molecular Weight = 610.26 gm
   Calcium   26.27 %  Ca   36.76 % CaO
   Aluminum  26.53 %  Al   50.12 % Al2O3
   Sulfur     5.25 %  S    13.12 % SO3
   Oxygen    41.95 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca4Al6(SO4)O12
Help on Environment: Environment: From the Hatrurim formation in cobbles in a pseudoconglomerate. High temperature metamorphism of calcareous rocks.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Hatrurim basin, W of the Dead Sea, Israel, near Har Ye'elim and Nahal Ye'elim (a hill and a wadi). Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: ICSD 28480
  PDF 33-256

Yeelimite Image

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  Yeelimite   Ellestadite-(OH)

Comments: Ye'elimite and hydroxylellestadite intimately intergrown as a brownish aggregate in massive anhydrite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Yeelimite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 18.392, Z = 16; V = 6,221.38 Den(Calc)= 2.61
Help on Crystal System: Crystal System: Isometric - Gyroidal H-M Symbol (4 3 2) Space Group: I 4132
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.7542(1), 2.909(0.15), 3.915(0.1),

Physical Properties of Yeelimite

Help on Color: Color: Colorless.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Streak: Streak: white

Optical Properties of Yeelimite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2176,KC= 0.2042
Ncalc = 1.53
Help on Optical Data: Optical Data: Isotropic, n=1.568.

Calculated Properties of Yeelimite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.58 gm/cc
note: Specific Gravity of Yeelimite =2.61 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0009500767
Boson Index = 0.9990499233
Help on Photoelectric: Photoelectric: PEYeelimite = 4.33 barns/electron
U=PEYeelimite x rElectron Density= 11.19 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Yeelimite is Not Radioactive

Yeelimite Classification

Help on  Dana Class: Dana Class: (30)Anhydrous Sulfates Containing Hydroxyl or Halogen
  (30.01)where (A B)m (XO4)p Zq where m:p>2:1
  (30.01.15)Dana Group Yeelimite Ca4Al6O12(SO4) I 4132 4 3 2
Help on  Strunz Class: Strunz Class: 07.BC.15 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BC -With medium-sized and large cations
07.BC.15 Yeelimite Ca4Al6O12(SO4) I 4132 4 3 2

Other Yeelimite Information

Help on References: References: NAME( Dana8) 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 Yeelimite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 07.BC.15





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