Mineralogy Database

Edgarbaileyite Mineral Data

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General Edgarbaileyite Information

Help on Chemical  Formula: Chemical Formula: Hg+6Si2O7
Help on Composition: Composition: Molecular Weight = 1,371.71 gm
   Silicon   4.09 %  Si    8.76 % SiO2
   Mercury  87.74 %  Hg   91.24 % Hg2O
   Oxygen    8.16 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Hg6Si2O7
Help on Environment: Environment: Secondary mineral in mercury mine.
Help on IMA Status: IMA Status: Approved IMA 1990
Help on Locality: Locality: Terlingua, Brewster County, Texas and Socrates mine, Sonoma County, California, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Edgar Bailey (1914-1983), distinguished geologist and mercury commodity specialist.
Help on Name Pronunciation: Name Pronunciation: Edgarbaileyite + Pronunciation Say EDGARBAILEYITE
Help on Synonym: Synonym: ICSD 69123
  IMA1988-028
  PDF 45-1438
 

Edgarbaileyite Image

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  Edgarbaileyite

Comments: Resinous yellow masses of edgarbaileyite in quartz.
Location: Clear Creek Mine, San Benito County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Edgarbaileyite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.5231:1:0.7751
Help on Cell Dimensions: Cell Dimensions: a = 11.725, b = 7.698, c = 5.967, Z = 2; beta = 112.07° V = 499.11 Den(Calc)= 9.13
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.16(1), 2.715(0.63), 1.872(0.36),
 

Physical Properties of Edgarbaileyite

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow, Orangish yellow, Dark olive green, Yellowish green, Dark green brown.
Help on Density: Density: 9.4
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 4 - Fluorite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Resinous
Help on Streak: Streak: yellow green
 

Optical Properties of Edgarbaileyite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.047 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.019 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1468,KPDmeas= 0.1426,KC= 0.1496
Ncalc = 2.37 - 2.41
Help on Optical Data: Optical Data: Biaxial (?), a=2.1, g=2.58, bire=0.4800
Help on Pleochroism (x): Pleochroism (x): lemon yellow.
Help on Pleochroism (y): Pleochroism (y): deeper lemon yellow.
Help on RL Bireflectance: RL Bireflectance: Weak to strong.
Help on RL Color: RL Color: Gray to light gray with pale lemon-yellow internal reflections..
Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Edgarbaileyite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   16.70   20.20 
   
 410 nm   16.90   19.85 
 420 nm   17.10   19.50 
 430 nm   17.20   19.30 
 440 nm   17.00   19.20 
 450 nm   16.75   19.00 
 460 nm   16.40   18.80 
 470 nm   16.10   18.50 
 480 nm   15.80   18.20 
 490 nm   15.50   18.00 
 500 nm   15.30   17.70 
 510 nm   15.10   17.50 
 520 nm   14.90   17.30 
 530 nm   14.70   17.00 
 540 nm   14.60   16.80 
 550 nm   14.50   16.65 
 560 nm   14.30   16.50 
 570 nm   14.20   16.40 
 580 nm   14.20   16.20 
 590 nm   14.10   16.10 
 600 nm   14.00   16.00 
 610 nm   14.00   15.95 
 620 nm   13.95   15.90 
 630 nm   13.90   15.80 
 640 nm   13.85   15.80 
 650 nm   13.80   15.70 
 660 nm   13.75   15.60 
 670 nm   13.70   15.55 
 680 nm   13.70   15.50 
 690 nm   13.60   15.50 
 700 nm    3.34    4.39 
Standardized Intensity (100%) Reflection Spectra of Edgarbaileyite in Oil
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm    5.32    7.42 
   
 410 nm    5.43    7.20 
 420 nm    5.53    7.02 
 430 nm    5.53    6.93 
 440 nm    5.38    6.83 
 450 nm    5.18    6.83 
 460 nm    4.91    6.48 
 470 nm    4.69    6.24 
 480 nm    4.50    6.03 
 490 nm    4.34    5.85 
 500 nm    4.21    5.70 
 510 nm    4.13    5.57 
 520 nm    4.07    5.47 
 530 nm    4.00    5.37 
 540 nm    3.93    5.26 
 550 nm    3.87    5.15 
 560 nm    3.81    4.53 
 570 nm    3.75    4.97 
 580 nm    3.71    4.90 
 590 nm    3.65    4.83 
 600 nm    3.61    4.77 
 610 nm    3.58    4.72 
 620 nm    3.54    4.68 
 630 nm    3.52    4.65 
 640 nm    3.50    4.60 
 650 nm    3.48    4.57 
 660 nm    3.46    4.53 
 670 nm    3.41    4.48 
 680 nm    3.39    4.44 
 690 nm    3.38    4.41 
 700 nm    3.34    4.39 
Calculated Relative Intensity Colors of Edgarbaileyite in Air
Relative
Intensity
   0%   70% 100% 140% 210% 280% 350% 420% 490% 560% 630% 640%
R1                        
R2                        
Calculated Relative Intensity Colors of Edgarbaileyite in Oil
Relative
Intensity
   0% 100% 200% 300% 400% 500% 600% 700% 800% 900% 1000%
R1                      
R2                      
 

Calculated Properties of Edgarbaileyite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.51 gm/cc
note: Specific Gravity of Edgarbaileyite =9.13 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.26
Boson Index = 0.74
Help on Photoelectric: Photoelectric: PEEdgarbaileyite =1,510.38 barns/electron
U=PEEdgarbaileyite x rElectron Density=11339.79 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Edgarbaileyite is Not Radioactive
 

Edgarbaileyite Classification

Help on  Dana Class: Dana Class: 55.05.01.01 (55)Sorosilicate Si2O7 Groups, Generally with No Additional Anions
  (55.05)with dimeric cations
  (55.05.01)Dana Group
 
55.05.01.01 Edgarbaileyite Hg6Si2O7 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.BC.25 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BC -Si2O7 groups, without non-tetrahedral anions;
 
09.BC.25 Edgarbaileyite Hg6Si2O7 C 2/m 2/m
 

Other Edgarbaileyite Information

Help on See Also: See Also: Links to other databases for Edgarbaileyite :
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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Edgarbaileyite

Hg+6Si2O7
Dana No: 55.05.01.01 Strunz No: 09.BC.25
Locality:

 

Notes:

 

 


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