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Yeelimite Mineral Data
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General Yeelimite Information
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Chemical Formula: |
Ca4Al6O12(SO4) |
Composition: |
Molecular Weight = 610.26 gm |
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Calcium 26.27 % Ca 36.76 % CaO |
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Aluminum 26.53 % Al 50.12 % Al2O3 |
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Sulfur 5.25 % S 13.12 % SO3 |
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Oxygen 41.95 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Ca4Al6(SO4)O12 |
Environment: |
From the Hatrurim formation in cobbles in a pseudoconglomerate. High temperature metamorphism of calcareous rocks. |
IMA Status: |
Approved IMA 1983 |
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. |
Name Origin: |
Named for the locality. |
Synonym: |
ICSD 28480 |
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PDF 33-256 |
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Ye'elimite |
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Yeelimite Image |
Images:
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Yeelimite Crystallography
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Cell Dimensions: |
a = 18.392, Z = 16; V = 6,221.38 Den(Calc)= 2.61 |
Crystal System: |
Isometric - Gyroidal H-M Symbol (4 3 2) Space Group: I 4132 |
X Ray Diffraction: |
By Intensity(I/Io): 3.7542(1), 2.909(0.15), 3.915(0.1), |
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Physical Properties of Yeelimite
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Color: |
Colorless. |
Diaphaneity: |
Transparent |
Streak: |
white |
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Optical Properties of Yeelimite
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Gladstone-Dale: |
CI calc= -0.066 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2176,KC= 0.2042 Ncalc = 1.53 |
Optical Data: |
Isotropic, n=1.568. |
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Calculated Properties of Yeelimite
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Electron Density: |
Bulk Density (Electron Density)=2.58 gm/cc note: Specific Gravity of Yeelimite =2.61 gm/cc. |
Fermion Index: |
Fermion Index = 0.0009500767 Boson Index = 0.9990499233 |
Photoelectric: |
PEYeelimite = 4.33 barns/electron U=PEYeelimite x rElectron Density= 11.19 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Yeelimite is Not Radioactive |
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Yeelimite Classification
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Dana Class: |
30.01.15.01 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen |
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(30.01)where (A B)m (XO4)p Zq where m:p>2:1 |
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(30.01.15)Dana Group |
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30.01.15.01 Yeelimite Ca4Al6O12(SO4) I 4132 4 3 2 |
Strunz Class: |
07.BC.15 07 - SULFATES (SELENATES, TELLURATES) |
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07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O |
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07.BC -With medium-sized and large cations |
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07.BC.15 Yeelimite Ca4Al6O12(SO4) I 4132 4 3 2 |
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Other Yeelimite Information
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References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
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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Print or Cut-and-Paste your Yeelimite Specimen Label here :
Yeelimite
Ca4Al6O12(SO4)
Dana No: 30.01.15.01 Strunz No: 07.BC.15
Locality:
Notes:
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