Edgarbaileyite Mineral Data

Edgarbaileyite Mineral Data +

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General Edgarbaileyite Information

Chemical Formula:

Hg+6Si2O7

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

Empirical Formula:

Hg₆Si₂O₇

IMA Status:

Approved IMA 1990

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 69123

IMA1988-028

PDF 45-1438

Edgarbaileyite Image

Images:

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

Axial Ratios:

a:b:c =1.5231:1:0.7751

Cell Dimensions:

a = 11.725, b = 7.698, c = 5.967, Z = 2; beta = 112.07° V = 499.11 Den(Calc)= 9.13

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.16(1), 2.715(0.63), 1.872(0.36),

Crystal Structure:

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Angel R J , Cressey G , Criddle A J , American Mineralogist , 75 (1990) p.1192-1196, Edgarbaileyite, Hg6Si2O7: The crystal structure of the first mercury silicate

Physical Properties of Edgarbaileyite

Cleavage:

None

Color:

Yellow, Orangish yellow, Dark olive green, Yellowish green, Dark green brown.

Density:

9.4

Diaphaniety:

Translucent to Opaque

Hardness:

4 - Fluorite

Luster:

Vitreous - Resinous

Streak:

yellow green

Optical Properties of Edgarbaileyite

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

Optical Data:

Biaxial (?), a=2.1, g=2.58, bire=0.4800

Calculated Properties of Edgarbaileyite

Electron Density:

r_electron=7.51 gm/cc
note: r_{Edgarbaileyite}=9.13 gm/cc.

Fermion Index

Fermion Index = 0.26692
Boson Index = 0.73308

Photoelectric:

PE_{Edgarbaileyite}=1,510.38 barns/electron
U=PE_{Edgarbaileyite} x r_electron=11339.79 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Edgarbaileyite is Not Radioactive

Edgarbaileyite Classification

Dana Class:

55.5.1.1 (55)Sorosilicate Si2O7 Groups, Generally with No Additional Anions

(55.5)with dimeric cations

(55.5.1)Dana Group

55.5.1.1 Edgarbaileyite Hg6Si2O7 C 2/m 2/m

Strunz Class:

VIII/C.06-20 VIII - Silicates

VIII/C - Sorosilicates, with [Si2O7]6-, without anions unfamiliar to tetraheders

VIII/C.06 - Barysilite - Edgarbaileyite series

VIII/C.06-10 Barysilite Pb8Mn(Si2O7)3 R 3c 3 2/m

VIII/C.06-20 Edgarbaileyite Hg6Si2O7 C 2/m 2/m

Other Edgarbaileyite Information

References:

PHYS. PROP.(Am.Min.,Vol.75,p1192-1196,1990) OPTIC PROP.(Am.Min.,Vol.75,p1192-1196,1990)

See Also:

Links to other databases for Edgarbaileyite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Print or Cut-and-Paste your Edgarbaileyite Specimen Label here :

Edgarbaileyite

Hg+6Si2O7
Dana No: 55.5.1.1 Strunz No: VIII/C.06-20
Locality:

Notes: