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Parkinsonite

A valid IMA mineral species
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05032940014946607317699.jpg
Parkinsonite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
07389510014980811826699.jpg
Parkinsonite, etc.

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
03126940014948741766981.jpg
Parkinsonite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
05032940014946607317699.jpg
Parkinsonite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
09779590014962645849455.jpg
Parkinsonite, etc.

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
07279370014946607317734.jpg
Parkinsonite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
05032940014946607317699.jpg
Parkinsonite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
07389510014980811826699.jpg
Parkinsonite, etc.

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
Hide all sections | Show all sections

About ParkinsoniteHide

Formula:
Pb7MoO9Cl2
Colour:
Bright red, purplish red, brownish red
Lustre:
Adamantine, Resinous, Pearly
Hardness:
2 - 2½
Specific Gravity:
7.32
Crystal System:
Tetragonal
Name:
For British mineral collector and dealer, Reginald F.D. Parkinson (20 May 1928, Battersea, Wandsworth - 13 March 1993, Bristol), who found the mineral.
The Mo-dominant analogue of janchevite.


Unique IdentifiersHide

Mindat ID:
3123
Long-form identifier:
mindat:1:1:3123:9
GUID
(UUID V4):
a9d08a17-b8e0-4c1c-a2cb-1f8bd9854ff0

IMA Classification of ParkinsoniteHide

Classification of ParkinsoniteHide

Strunz-mindat (2023):
3.DB.40

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
B : With Pb, Cu, etc.
Dana 8th ed.:
10.5.11.1

10 : OXYHALIDES AND HYDROXYHALIDES
5 : Am(O,OH)pXq

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
PknIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of ParkinsoniteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of ParkinsoniteHide

Lustre:
Adamantine, Resinous, Pearly
Transparency:
Translucent
Colour:
Bright red, purplish red, brownish red
Streak:
Scarlet to grenadine-red
Hardness:
2 - 2½ on Mohs scale
Hardness:
VHN50=122 kg/mm2 - Vickers
Tenacity:
Sectile
Cleavage:
Perfect
{001}, perfect; {100}, possible, fair
Density:
7.32 g/cm3 (Measured)    7.39 g/cm3 (Calculated)

Optical Data of ParkinsoniteHide

Type:
Uniaxial (-)
RI values:
nω = 2.580 nε = 2.420
Max Birefringence:
δ = 0.160
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Anisotropism:
Weak to moderate
Bireflectance:
Moderate
Colour in reflected light:
gray
Internal Reflections:
deep red to red-orange
Pleochroism:
Strong
Comments:
O = brownish red; E = greenish yellow

Chemistry of ParkinsoniteHide

Mindat Formula:
Pb7MoO9Cl2
Elements listed:
Cl, Mo, O, Pb - search for minerals with similar chemistry

Crystallography of ParkinsoniteHide

Crystal System:
Tetragonal
Cell Parameters:
a = 3.9992(3) Å, c = 22.514(3) Å
Ratio:
a:c = 1 : 5.63
Unit Cell V:
360.08 ų (Calculated from Unit Cell)
Z:
2
Comment:
Point Group: 4/m 2/m 2/m, 42m, 4mm, or 422; Space Group: I4/mmm, I42m, I4m2, I4mm, or I422.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.983 Å(100)
2.816 Å(78)
1.989 Å(75)
1.658 Å(51)
1.586 Å(33)
3.507 Å(32)
1.263 Å(24)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47g : [Halogen-bearing surface weathering minerals]
47h : [Near-surface oxidized, dehydrated minerals]

Type Occurrence of ParkinsoniteHide

Co-Type Localities:
ⓘ Wesley Mine, Westbury on Trym, Bristol, England, UK
ⓘ Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
General Appearance of Type Material:
As bladed crystals, to 0.3 mm, and crystalline aggregates
Place of Conservation of Type Material:
The Natural History Museum, London, England, 1987,478–479.
Associated Minerals at Type Locality:
WulfeniteParalaurioniteMendipiteDiaboleiteChloroxiphite
CerussiteCalcite
Reference:
Symes, R.F., Cressey, G., Griddle, A.J., Stanley, C.J., Francis, J.G., and Jones, G.C. (1994) Parkinsonite, (Pb,Mo,□)8O8Cl2, a new mineral from Merehead Quarry, Somerset. Mineralogical Magazine: 58(390): 59-68.
Download:
https://rruff.info/rruff_1.0/uploads/MM58_59.pdf

Synonyms of ParkinsoniteHide

Other Language Names for ParkinsoniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
12 photos of Parkinsonite associated with MendipitePb3Cl2O2
4 photos of Parkinsonite associated with Lead-bearing Aragonite(Ca,Pb)CO3
3 photos of Parkinsonite associated with MereheaditePb47Cl25(OH)13O24(CO3)(BO3)2
3 photos of Parkinsonite associated with DiaboleitePb2CuCl2(OH)4
3 photos of Parkinsonite associated with ChloroxiphitePb3CuO2Cl2(OH)2
3 photos of Parkinsonite associated with CalciteCaCO3
3 photos of Parkinsonite associated with Manganese Oxides
1 photo of Parkinsonite associated with Manganese-bearing Calcite(Ca,Mn)CO3

Related Minerals - Strunz-mindat GroupingHide

3.DB.RickturneritePb7O4[Mg(OH)4](OH)Cl3Orth. mmm (2/m 2/m 2/m) : Pnma
3.DB.05DiaboleitePb2CuCl2(OH)4Tet. 4mm : P4mm
3.DB.10PseudoboleitePb31Cu24Cl62(OH)48Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.DB.15BoleiteKPb26Ag9Cu24(OH)48Cl62Iso. m3m (4/m 3 2/m) : Pm3m
3.DB.20CumengeitePb21Cu20Cl42(OH)40 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.DB.25BideauxitePb2AgCl3(F,OH)2Iso. m3m (4/m 3 2/m) : Fd3m
3.DB.30ChloroxiphitePb3CuO2Cl2(OH)2Mon. 2/m : P21/m
3.DB.35HematophanitePb4Fe3O8(OH,Cl)Tet. 4mm : P4mm
3.DB.40AsisitePb7SiO9Cl2 Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.DB.40JanchevitePb7V5+(O8.5◻0.5)Cl2Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.DB.45MurdochitePbCu6O8-x(Cl,Br)2xIso. m3m (4/m 3 2/m) : Fm3m
3.DB.45EddaviditePb2Cu12O15Br2Iso. m3m (4/m 3 2/m) : Fm3m
3.DB.50YedlinitePb6Cr3+Cl6(O,OH,H2O)8Trig. 3 : R3
3.DB.55SiidraitePb2Cu(OH)2I3Orth. mmm (2/m 2/m 2/m) : Fddd

Other InformationHide

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 ParkinsoniteHide

References for ParkinsoniteHide

Reference List:
Aurivillius, B. (1982) On the crystal structure of a number of non-stoichiometric mixed lead oxide halides composed of PbO-like blocks and single halogen layers. Chemica Scripta: 19: 97–107.
Symes, R. F., Cressey, G., Griddle, A. J., Stanley, C. J., Francis, J. G., Jones, G. C. (1994) Parkinsonite, (Pb,Mo,□)8O8Cl2, a new mineral from Merehead Quarry, Somerset. Mineralogical Magazine, 58 (390) 59-68 doi:10.1180/minmag.1994.058.390.06
Jambor, John L., Roberts, Andrew C., Vanko, David A. (1994) New Mineral Names. American Mineralogist, 79 (9-10) 1009-1014
Symes, R. F., Cressey, G., Griddle, A. J., Stanley, C. J., Francis, J. G., Jones, G. C. (1994) Parkinsonite, (Pb,Mo,□)8O8Cl2, a new mineral from Merehead Quarry, Somerset. Mineralogical Magazine, 58 (390) 59-68 doi:10.1180/minmag.1994.058.390.06
Welch, M.D., Schofield, P.F., Cressey, G., Stanley, C.J. (1996) Cation ordering in lead-molybdenum-vanadium oxychlorides. American Mineralogist: 81: 1350-1359.
Mandarino, Joseph A. (1997) New Minerals 1990-1994. The Mineralogical Record Inc., Tuscon, Arizona. 220pp.
Lepore, G.O. and Welch, M.D. (2010) The crystal structure of parkinsonite, nominally Pb7MoO9Cl2: a naturally occurring Aurivillius phase. Mineralogical Magazine: 74: 269-275.

Localities for ParkinsoniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Namibia
 
  • Oshikoto Region
    • Tsumeb
Bowell, R.J & Mocke, H. 2018. Minerals new to Tsumeb. Communications of the
Geological Survey of Namibia, 19, 20-46
UK (TL)
 
  • England
    • Bristol
      • Westbury on Trym
Symes, R. F., Cressey, G., Griddle, A. J., Stanley, C. J., Francis, J. G., Jones, G. C. (1994) Parkinsonite, (Pb,Mo,□)8O8Cl2, a new mineral from Merehead Quarry, Somerset. Mineralogical Magazine, 58 (390) 59-68 doi:10.1180/minmag.1994.058.390.06
Day, Harry (1999) BMS Database, British Micromount Society.
Rumsey, M. (2008) The first British occurrence of kombatite, Pb14[(VO4)2O9Cl4], from the "Wesley Mine" near Westbury on Trym, Bristol. Journal of the Russell Society, 11. 51-53
    • Somerset
      • Mendip
        • Cranmore
Mineralogical Magazine: 58:59-68.
Welch, M.D., Schofield, P.F., Cressey, G., and Stanley, G.J. (1996). Cation ordering in lead-molybdenum-vanadium oxychlorides. American Mineralogist, vol. 81, pp 1350-1359
Welch, M.D. and Lepore, G.O. (2010). The crystal structure of parkinsonite, nominally Pb7MoO9Cl2: a naturally occurring Aurivillius phase. Mineralogical Magazine, 74, 269-275.
Turner, Rick, Rumsey, Michael S. (2010) The minerals of the Mendip Hills and their relationships. Journal of the Russell Society, 13. 3-46
USA
 
  • Arizona
    • Maricopa County
      • Painted Rock Mountains
        • Painted Rock Mining District
          • Theba
PXRD analyzed by Tony Kampf.
Bruce Murphy Collection
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