IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Somersetite

This page is currently not sponsored. Click here to sponsor this page.
Flag of the county of Somerset, England
Formula:
Pb8O2(OH)2(CO3)5
Colour:
Green or white
Crystal System:
Hexagonal
Name:
Named for the county of Somerset, England, which include the type locality.
New structure type.
Closely related to hydrocerussite and plumbonacrite.



Hide all sections | Show all sections

Classification of SomersetiteHide

Approved
Approval Year:
2017
First Published:
2018

Physical Properties of SomersetiteHide

Colour:
Green or white
Comment:
Similar visually to hydrocerussite-like minerals but with a mint-green tint

Chemical Properties of SomersetiteHide

Formula:
Pb8O2(OH)2(CO3)5

Crystallography of SomersetiteHide

Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Cell Parameters:
a = 5.2427(7) Å, c = 40.624(6) Å
Ratio:
a:c = 1 : 7.749
Unit Cell V:
967 ų
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.308(33)
4.148(25)
3.581(40)
3.390(100)
3.206(55)
2.625(78)
2.544(94)
2.119(27)
Comments:
From Type Description.

Type Occurrence of SomersetiteHide

General Appearance of Type Material:
Forms plates and subhedral grains up to 5 mm across and up to 2 mm thick. In bi-coloured crystals it forms very thin intergrowths with plumbonacrite.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Department of Mineralogy, Saint- Petersburg State University, Saint-Petersburg, Russia, catalogue number 1/19661
Reference:
Siidra, O.I., Nekrasova, D.O., Turner, R., Zaitsev, A.N., Chukanov, N.V., Polekhovsky, Y.S., Spratt, J., Rumsey, M.S. (2018) Somersetite, Pb8O(OH)4(CO3)5, a New Complex Hydrocerussite-Related Mineral from the Mendip Hills. Mineralogical Magazine: 82: 1211-1224.

Synonyms of SomersetiteHide

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.

References for SomersetiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Siidra, O.I., Nekrasova, D.O., Turner, R., Zaitsev, A.N., Chukanov, N.V., Spratt, J., Polekhovsky, J.S. and Rumsey, M. (2017) Somersetite, IMA 2017-024. CNMNC Newsletter No. 38, August 2017, page 1035. Mineralogical Magazine: 81: 1033–1038.
Siidra, O., Nekrasova, D., Depmeier, W., Chukanov, N., Zaitsev, A. and Turner, R. (2018) Hydrocerussite-related minerals and materials: structural principles, chemical variations and infrared spectroscopy. Acta Crystallgraphica: B74: 182-195.
Siidra, O.I., Nekrasova, D.O., Turner, R., Zaitsev, A.N., Chukanov, N.V., Polekhovsky, Y.S., Spratt, J., Rumsey, M.S. (2018) Somersetite, Pb8O(OH)4(CO3)5, a New Complex Hydrocerussite-Related Mineral from the Mendip Hills. Mineralogical Magazine: 82: 1211-1224.

Internet Links for SomersetiteHide

Localities for SomersetiteHide

ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
UK (TL)
 
  • England
    • Somerset
      • Cranmore
Siidra, O.I., Nekrasova, D.O., Turner, R., Zaitsev, A.N., Chukanov, N.V., Spratt, J., Polekhovsky, J.S. and Rumsey, M. (2017) Somersetite, IMA 2017-024. CNMNC Newsletter No. 38, August 2017, page 1035; Mineralogical Magazine: 81: 1033–1038; Siidra, O.I., Nekrasova, D.O., Turner, R., Zaitsev, A.N., Chukanov, N.V., Polekhovsky, Y.S., Spratt, J., Rumsey, M.S. (2018) Somersetite, Pb8O(OH)4(CO3)5, a New Complex Hydrocerussite-Related Mineral from the Mendip Hills. Mineralogical Magazine: 82: 1211-1224
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: November 21, 2018 13:55:57 Page generated: November 15, 2018 07:30:33
Go to top of page