Date (Creation)

2026-03-23

Citation identifier

http://data.bgs.ac.uk/id/dataHolding/13608658

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Durham	Dr Madeleine Humphreys	not available	Originator
University of Manchester	Dr Margaret Hartley	not available	Originator
University of Manchester	David Neave	not available	Originator
University of Cambridge	Oliver Shorttle	not available	Originator
University of Liverpool	Elisabetta Mariani	not available	Originator
University of Manchester	Alexander G. Stewart	not available	Originator
British Geological Survey	Enquiries	not available	Distributor
British Geological Survey	Enquiries	not available	Point of contact

Maintenance and update frequency

notApplicable

GEMET - INSPIRE themes, version 1.0

• Geology

BGS Thesaurus of Geosciences

• Spectroscopy

• Clinopyroxene

• X ray fluorescence spectroscopy

dataCentre

• data.gov.uk (non-INSPIRE)
• Citable Data
• NGDC Deposited Data

Keywords

• NERC_DDC

Access constraints

Other restrictions

Other constraints

licenceOGL

Other constraints

Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Use constraints

Other restrictions

Other constraints

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Other constraints

Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Language

English

Topic category

• Geoscientific information

Begin date

2020-01-01

End date

2025-11-01

Distribution format

Name	Version
PDF file (.pdf)
Comma-Separated Values (CSV) file (.csv)

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	not available	Distributor

OnLine resource

Protocol	Linkage	Name
WWW:DOWNLOAD-1.0-http--download	https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item191847	Data

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--related	https://doi.org/10.5285/c1900414-3e31-4d85-a2b8-3beacdf54392	Citation Information - Digital Object Identifier (DOI)

Hierarchy level

Non geographic dataset

Other

non geographic dataset

Statement

Point analyses were performed on polished samples set within epoxy resin blocks and on polished thin sections. Fe-XANES was performed by determining X-ray intensity over an energy range of 7020–7400 eV, using an energy step of 0.5 eV and a counting time of 2 s per step over the 7105–7120 eV energy range that is critical for defining pre-edge structures. The incident X-ray beam was monochromatised using a Si(311) crystal to increase the energy resolution. Aluminium plates were used to attenuate the beam to avoid saturating the detector, with a 0.1 mm-thick plate used for relatively Fe-poor samples like Augite 1 and Diopside, and a 0.25 mm-thick plate used for relatively Fe-rich samples like Aegirine 2 and Hedenbergite. Fluoresced X-rays were analysed with a Vortex ME-4 silicon drift detector positioned at 90° to the incident beam. EPMA was carried out using a JEOL JXA8530F instrument in the School of Earth Sciences at the University of Bristol operated with Probe for EPMA ( https://www.probesoftware.com/). Analyses were performed following the procedure described by Neave et al. (2024a doi: 10.1007/s00410-023-02080-2). EBSD was carried out using a Zeiss GeminiSEM 450 instrument equipped with an Oxford Instruments Symmetry 2 EBSD detector in the Scanning Electron Microscopy Shared Research Facility (SEM SRF) at the University of Liverpool. Prior to performing EBSD, all samples were polished with colloidal silica, then coated with a thin layer of carbon. Samples were analysed at an angle of 70° to horizontal, using an accelerating voltage of 20 kV, a beam current of 10 nA, and working distance between 14 mm and 20 mm. These data were acquired by David A. Neave, Elisabetta Mariani, Alexander G. Stewart. Margaret E. Hartley and Madeleine C. S. Humphreys as part of David A. Neave's NERC IRF (NE/T011106/1).

Metadata

File identifier

4dd9d148-4d05-ee39-e063-3050940a11a6 XML

Metadata language

English

Hierarchy level

Non geographic dataset

Hierarchy level name

non geographic dataset

Date stamp

2026-06-25

Metadata standard name

UK GEMINI

Metadata standard version

2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey		enquiries@bgs.ac.uk	Point of contact

Dataset URI

http://data.bgs.ac.uk/id/dataHolding/13608658