Peterbaylissite Mineral Data

General Peterbaylissite Information

Chemical Formula:

Hg+3(CO3)(OH)•2(H2O)

Composition:

Molecular Weight = 714.82 gm

Mercury 84.19 % Hg 87.54 % Hg₂O

Hydrogen 0.71 % H 6.30 % H₂O

Carbon 1.68 % C 6.16 % CO₂

Oxygen 13.43 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Hg₃(CO₃)(OH)•2(H₂O)

Environment:

On altered serpentinite.

IMA Status:

Approved IMA 1995

Locality:

A small prospect pit near the long abandoned Clear Creek mercury mines, New Idria district, San Benito County, California, USA. Link to MinDat.org Location Data.

Name Origin:

For Dr. Peter Bayliss, Prof. emeritus of Mineralogy, Department of Geology and Geophysics, University of Calgary, Alberta, Canada.

Name Pronunciation:

Peterbaylissite + Pronunciation

Synonym:

IMA1993-041

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Peterbaylissite Crystallography

Axial Ratios:

a:b:c =0.9991:1:0.9628

Cell Dimensions:

a = 11.13, b = 11.139, c = 10.725, Z = 8; V = 1,329.65 Den(Calc)= 7.14

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pcab

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

By Intensity(I/I_o): 2.648(1), 2.969(0.7), 2.419(0.6),

Physical Properties of Peterbaylissite

Cleavage:

None

Color:

Black, Dark red brown.

Density:

7.14

Diaphaneity:

Opaque

Fracture:

Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

4-5 - Fluorite-Apatite

Luster:

Sub Metallic

Streak:

dark brownish black

Optical Properties of Peterbaylissite

Gladstone-Dale:

CI meas= 0.04 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.04 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1541,KPDmeas= 0.1541,KC= 0.1605
Ncalc = 2.15

Optical Data:

Biaxial (?), a=2.1

RL Anisotrophism:

Weak, dark gray to brown.

RL Bireflectance:

Weak to moderate.

RL Color:

Gray with slight bluish tinge.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Peterbaylissite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	12.00	13.20
420 nm	11.80	12.80
440 nm	11.60	12.60
460 nm	11.50	12.30
480 nm	11.30	12.10
500 nm	11.20	11.90
520 nm	11.10	11.70
540 nm	11.00	11.60
560 nm	10.90	11.50
580 nm	10.90	11.50
600 nm	10.80	11.40
620 nm	10.70	11.30
640 nm	10.80	11.20
660 nm	10.60	11.20
680 nm	10.60	11.20
700 nm	10.60	11.20

**Calculated Relative Intensity Colors of Peterbaylissite in Air**
Relative Intensity	0%	90%	100%	180%	270%	360%	450%	540%	630%	720%	810%
R₁
R₂

Calculated Properties of Peterbaylissite

Electron Density:

Bulk Density (Electron Density)=5.97 gm/cc
note: Specific Gravity of Peterbaylissite =7.14 gm/cc.

Fermion Index:

Fermion Index = 0.25
Boson Index = 0.75

Photoelectric:

PE_{Peterbaylissite}=1,424.38 barns/electron
U=PE_{Peterbaylissite} x rElectron Density=8,508.07 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Peterbaylissite is Not Radioactive

Peterbaylissite Classification

Dana Class:

16b.04.04.01 (16b)Carbonates - Hydroxyl or Halogen

(16b.04)where (A)m (B)n (XO3)p Zq · x(H2O), with (m+n):p=8:1

(16b.04.04)Dana Group

16b.04.04.01 Peterbaylissite Hg3(CO3)(OH)•2(H2O) Pcab 2/m 2/m 2/m

16b.04.04.02 Clearcreekite! Hg3(CO3)(OH)•2(H2O) P 2₁/c 2/m

Strunz Class:

05.DC.25 05 - CARBONATES (NITRATES)

05.D - Carbonates with Additional Anions, with H2O

05.DC -With large cations

05.DC.25 Peterbaylissite Hg3(CO3)(OH)•2(H2O) Pcab 2/m 2/m 2/m

Other Peterbaylissite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p1074,1995) OPTIC PROP.(AntBidBlaNic5)

See Also:

Links to other databases for Peterbaylissite :
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 Peterbaylissite Specimen Label here :

Peterbaylissite

Hg+3(CO3)(OH)•2(H2O)
Dana No: 16b.04.04.01 Strunz No: 05.DC.25
Locality:

Notes: