|
| Home | Crystal | jmol | jPOWD | Chem | X Ray | Dana | Strunz | Properties | A to Z | Images | Share | News | Help | About |
General Pellyite Information |
|||
 Chemical Formula: |
Ba2Ca(Fe++,Mg)2Si6O17 | ||
| Composition: |
Molecular Weight = 841.70 gm | ||
| Barium 32.63 % Ba 36.43 % BaO | |||
| Calcium 4.76 % Ca 6.66 % CaO | |||
| Magnesium 2.31 % Mg 3.83 % MgO | |||
| Iron 7.96 % Fe 10.24 % FeO | |||
| Silicon 20.02 % Si 42.83 % SiO2 | |||
| Oxygen 32.31 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Ba2CaFe2+1.2Mg0.8Si6O17 | ||
| Environment: |
Contact metasomatic deposit. | ||
| IMA Status: |
Approved IMA 1972 | ||
| Locality: |
Pelly and Ross River, Yukon Territories, Canada. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
| Name Pronunciation: |
Pellyite  |
||
| Synonym: |
ICSD 12135 | ||
| IMA1970-035 | |||
| PDF 25-95 | |||
Pellyite Image | |||
|
Images:
|
|
||
|
Images:
|
|
||
Pellyite Crystallography |
|||
| Axial Ratios: |
a:b:c =2.1922:1:1.9869 | ||
| Cell Dimensions: |
a = 15.677, b = 7.151, c = 14.209, Z = 4; V = 1,592.92 Den(Calc)= 3.51 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mcm | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.43(1), 3.19(0.65), 2.308(0.6), | ||
|
Crystal Structure:
Mouse |
| ||
Physical Properties of Pellyite |
|||
| Cleavage: |
{???} Indistinct, {???} Indistinct | ||
| Color: |
Colorless, Light yellow. | ||
| Density: |
3.51 | ||
| Diaphaneity: |
Translucent | ||
| Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). | ||
| Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. | ||
| Hardness: |
6 - Orthoclase | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Pellyite |
|||
| Gladstone-Dale: |
CI meas= -0.041 (Good) - where the CI = (1-KPDmeas/KC) CI calc= -0.041 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.184,KPDmeas= 0.184,KC= 0.1766 Ncalc = 1.62 |
||
| Optical Data: |
Biaxial (+), a=1.643, b=1.645, g=1.649, bire=0.0060, 2V(Calc)=72, 2V(Meas)=47. Dispersion very strong, r > v. | ||
Calculated Properties of Pellyite |
|||
| Electron Density: |
Bulk Density (Electron Density)=3.28 gm/cc note: Specific Gravity of Pellyite =3.51 gm/cc. |
||
| Fermion Index: |
Fermion Index = 0.07 Boson Index = 0.93 |
||
| Photoelectric: |
PEPellyite = 144.10 barns/electron U=PEPellyite x rElectron Density= 472.09 barns/cc. |
||
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Pellyite is Not Radioactive |
||
Pellyite Classification |
|||
| Dana Class: |
78.06.03.01 (78)Unclassified silicates | ||
| (78.06)possible tectosilicates | |||
| (78.06.03)Dana Group | |||
| Strunz Class: |
09.DO.10 09 - SILICATES (Germanates) | ||
| 09.D - Inosilicates* Structural terminology according to Liebau (1985) | |||
| 09.DO -Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains | |||
Other Pellyite Information |
|||
| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Pellyite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - CalTech Mineral Spectroscopy 4 - EUROmin Project 5 - Ecole des Mines de Paris 6 - GeoScienceWorld 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - Mineralienatlas (Deutsch) 13 - Online Mineral Museum 14 - QUT Mineral Atlas 15 - Ruff.Info 16 - WWW-MINCRYST Search for Pellyite using: Visit our Advertisers for Pellyite : A Bijoux Google Search for PellyiteAdam's Minerals Google Search for Pellyite Cape Minerals Google Search for Pellyite Dakota Matrix Minerals Google Search for Pellyite Excalibur Mineral Corp. Google Search for Pellyite Exceptional Minerals Google Search for Pellyite John Betts Fine Minerals Search for Pellyite McDougall Minerals Google Search for Pellyite Mineral News Website Link Rock and Mineral Shows Google Search for Pellyite Weinrich Minerals, Inc. Google Search for Pellyite Ask about Pellyite here : Print or Cut-and-Paste your Pellyite Specimen Label here :
|
||
