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Rumseyite

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Mike Rumsey had to get a basket
Formula:
Pb2OClF
System:
Tetragonal
Name:
Named for Michael Rumsey, Curator at Natural History Museum, London
This page provides mineralogical data about Rumseyite.

Classification of Rumseyite

Approved 2012
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http://www.mindat.org/min-42723.html
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Type Occurrence of Rumseyite

General Appearance of Type Material:
A single (approx. 1 mm) grain of this mineral is currently (2012) known.
Place of Conservation of Type Material:
Natural History Museum, London, UK, catalogue number BM1970,110

Crystallography of Rumseyite

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I4/mmm
Cell Parameters:
a = 4.065(1) Å, c = 12.631(7) Å
Ratio:
a:c = 1 : 3.107
Unit Cell Volume:
V 208.72 ų (Calculated from Unit Cell)
Comment:
Aurivillius structure type
X-Ray Powder Diffraction Data:
d-spacingIntensity
6.306 (17)
3.848 (41)
2.923 (100)
2.875 (68)
2.110 (12)
2.049 (10)
1.719 (9)
1.680 (14)

Chemical Properties of Rumseyite

Formula:
Pb2OClF
Essential elements:
All elements listed in formula:

Other Names for Rumseyite

Name in Other Languages:

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.

References for Rumseyite

Reference List:
Turner, R.W., Siidra, O.I., Krivovichev, S.V., Stanley, C.J. and Spratt. J. (2012) Rumseyite, IMA 2011-091. CNMNC Newsletter, 13(6), 808; Mineralogical Magazine, 76, 807-817.

Turner, R.W.; Siidra, O.I.; Krivovichev, S.V.; Stanley, C.J.; Spratt, J. (2012): Rumseyite, [Pb2OF]Cl, the first naturally occurring fluoroxychloride mineral with the parent crystal structure for layered lead oxychlorides. Mineralogical Magazine 76, 1247-1255.

Internet Links for Rumseyite

Localities for Rumseyite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
UK (TL)
 
  • England
    • Somerset
      • Cranmore
Turner, R.W., Siidra, O.I., Krivovichev, S.V., Stanley, C.J. and Spratt. J. (2012) Rumseyite, IMA 2011-091. CNMNC Newsletter, 13(6), 808; Turner, R.W.; Siidra, O.I.; Krivovichev, S.V.; Stanley, C.J.; Spratt, J. (2012): Rumseyite, [Pb2OF]Cl, the first naturally occurring fluoroxychloride mineral with the parent crystal structure for layered lead oxychlorides. Mineralogical Magazine 76, 1247-1255.
Mineral and/or Locality  
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