Peterbaylissite
A valid IMA mineral species
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Formula:
[Hg2]2+3[CO3]2(OH)2 · 4H2O
Colour:
Black to dark red-brown
Lustre:
Adamantine, Sub-Metallic
Hardness:
4 - 5
Crystal System:
Orthorhombic
Name:
For Dr. Peter Bayliss, Prof. emeritus of Mineralogy, Department of Geology and Geophysics, University of Calgary, Alberta, Canada.
Type Locality:
Dimorph of:
This page provides mineralogical data about Peterbaylissite.
Unique Identifiers
Mindat ID:
7226
Long-form identifier:
mindat:1:1:7226:3
GUID
(UUID V4):
(UUID V4):
784b40d1-2b3d-4b2e-bbea-4c1914a9e2b5
IMA Classification of Peterbaylissite
Approved
IMA Formula:
Hg3(CO3)(OH) · 2H2O
Classification of Peterbaylissite
5.DC.25
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
C : With large cations
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
C : With large cations
16b.4.4.1
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
4 : AmBn(XO3)pZqxH2O & with (m+n):p = 3:1
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
4 : AmBn(XO3)pZq
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Pby | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Peterbaylissite
Adamantine, Sub-Metallic
Transparency:
Opaque
Colour:
Black to dark red-brown
Streak:
Dark brownish black
Hardness:
4 - 5 on Mohs scale
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Optical Data of Peterbaylissite
Type:
Biaxial
RI values:
nα = 2.100
Max Birefringence:
δ = 2.100
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Anisotropism:
Weak, dark gray to brown.
Bireflectance:
Weak to moderate
Dispersion:
r < v extreme
Colour in reflected light:
gray with slight blue tinge
Chemistry of Peterbaylissite
Mindat Formula:
[Hg2]2+3[CO3]2(OH)2 · 4H2O
Elements listed:
Crystallography of Peterbaylissite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 11.130(2) Å, b = 11.139(3) Å, c = 10.725(3) Å
Ratio:
a:b:c = 0.999 : 1 : 0.963
Unit Cell V:
1,329.65 ų (Calculated from Unit Cell)
Z:
8
Comment:
Space Group: P cab.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.648 Å | (100) |
| 2.969 Å | (70) |
| 2.786 Å | (70) |
| 2.419 Å | (60) |
| 4.84 Å | (50) |
| 6.35 Å | (40) |
| 4.95 Å | (40) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Peterbaylissite
Place of Conservation of Type Material:
The Natural History Museum, London, England, 1993,431 and E.1492; Canadian Geological Survey, Ottawa, Canada, 67533
Associated Minerals at Type Locality:
Reference:
ROBERT, A.C., ERCIT, T.S., GROAT, L.A., CRIDDLE, A.J., ERD, R.C. & WILLIAMS, R.S. (1995) Peterbaylissite, Hg1+3(CO3)(OH)2H2O, a new mineral species from Clear Creek claim, San Benito County, California. Canadian Mineralogist 33, 47-53.
Synonyms of Peterbaylissite
Other Language Names for Peterbaylissite
German:Peterbaylissit
Spanish:Peterbaylissita
Related Minerals - Strunz-mindat Grouping
| 5.DC. | Calcioancylite-(La) | (LaCa)(CO3)2(OH) · H2O |
| 5.DC. | Gysinite-(La) | PbLa(CO3)2(OH) · H2O |
| 5.DC. | Gysinite-(Ce) | PbCe(CO3)2(OH)(H2O) |
| 5.DC.05 | Ancylite-(Ce) | CeSr(CO3)2(OH) · H2O |
| 5.DC.05 | Calcioancylite-(Ce) | (Ce,Ca,Sr)CO3(OH,H2O) |
| 5.DC.05 | Calcioancylite-(Nd) | Ca(Nd,La,Ce)(CO3)2(OH).H2O |
| 5.DC.05 | Gysinite-(Nd) | PbNd(CO3)2(OH) · H2O |
| 5.DC.05 | Unnamed (La-analogue of Calcioancylite-(Ce)) | (La,Ce,Nd,Ca,Sr)CO3(OH,H2O) |
| 5.DC.05 | Ancylite-(La) | LaSr(CO3)2(OH) · H2O |
| 5.DC.05 | Kozoite-(Nd) | (Nd,La,Sm,Pr)(CO3)(OH) |
| 5.DC.05 | Kozoite-(La) | (La,Nd)(CO3)(OH) |
| 5.DC.05 | Unnamed (Ce-analogue of Kozoite-(La) and -(Nd)) | (Ce,La)(CO3)(OH) |
| 5.DC.10 | Kamphaugite-(Y) | Ca(Y,REE)(CO3)2(OH) · H2O |
| 5.DC.15 | Sheldrickite | NaCa3(CO3)2F3 · H2O |
| 5.DC.20 | Thomasclarkite-(Y) | (Na,Ce)(Y,REE)(HCO3)(OH)3 · 4H2O |
| 5.DC.30 | Clearcreekite | [Hg2]2+3[CO3]2(OH)2 · 4H2O |
| 5.DC.35 | Niveolanite | NaBe(CO3)(OH) · 2H2O |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Peterbaylissite
mindat.org URL:
https://www.mindat.org/min-7226.html
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External Links:
References for Peterbaylissite
Localities for Peterbaylissite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
USA (TL) | |
| Roberts et al. (1995) |
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