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A New Albite Microanalytical Reference Material from Piz Beverin for Na, Al and Si Determination, and the Potential for New K-Feldspar Reference Materials

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dc.contributor.authorAllaz, Julien M.
dc.contributor.authorGuillong, Marcel
dc.contributor.authorTavazzani, Lorenzo
dc.contributor.authorSpiekermann, Georg
dc.contributor.authorZehnder, Lydia
dc.contributor.authorBullock, Emma
dc.contributor.authorDesOrmeau, Joel
dc.contributor.authorJercinovic, Michael J.
dc.contributor.authorKrause, Joachim
dc.contributor.authorMarxer, Felix
dc.contributor.authorNachlas, William O.
dc.contributor.authorSpratt, John
dc.date2023-11-08T14:37:16.000
dc.date.accessioned2024-04-26T17:34:06Z
dc.date.available2023-11-08T00:00:00Z
dc.date.issued2023-01-01
dc.description.abstractDetermination of alkali elements is important to Earth scientists, yet suitable and reliable microanalytical reference materials are lacking. This paper proposes a new albite reference material and evaluates the potential for future K-feldspar reference materials. The proposed Piz Beverin albite reference material from Switzerland yields a homogeneous composition at the centimetre- to micrometre-scale for Si, Al and Na with < 2000 μg g-1 total trace elements (mostly heterogeneously distributed Ca, K and Sr). EPMA and LA-ICP-MS measurements confirm a composition of 99.5(2)% albite component, which is supported further by bulk XRF measurements. A round robin evaluation involving nine independent EPMA laboratories confirms its composition and homogeneity for Si, Al and Na. In addition, a set of five distinct clear K-feldspar samples was evaluated as possible reference materials. The first two crystals of adular and orthoclase yield unacceptable inhomogeneities with > 2% relative local variations of Na, K and Ba contents. The three other investigated sets of K-feldspar crystals are yellow sanidine crystals from Itrongay (Madagascar). Despite distinct compositions, EPMA confirms they are each homogeneous at the centimetre to micrometre scale for Si, Al and K and have no apparent inclusions; further investigation to find larger amounts of these materials is therefore justified.
dc.identifier.doihttps://doi.org/10.1111/ggr.12515
dc.identifier.urihttps://hdl.handle.net/20.500.14394/29907
dc.relation.ispartofGeostandards and Geoanalytical Research
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1036&amp;context=geo_faculty_pubs&amp;unstamped=1
dc.rightsUMass Amherst Open Access Policy
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.source.statuspublished
dc.subjectnatural microanalytical reference materials
dc.subjectalkali elements
dc.subjectfeldspar minerals
dc.subjectRM evaluation
dc.subjectcombined EPMA
dc.subjectLA-ICP-MS and XRF analysis
dc.titleA New Albite Microanalytical Reference Material from Piz Beverin for Na, Al and Si Determination, and the Potential for New K-Feldspar Reference Materials
dc.typearticle
dc.typearticle
digcom.contributor.authorAllaz, Julien M.
digcom.contributor.authorGuillong, Marcel
digcom.contributor.authorTavazzani, Lorenzo
digcom.contributor.authorSpiekermann, Georg
digcom.contributor.authorZehnder, Lydia
digcom.contributor.authorBullock, Emma
digcom.contributor.authorDesOrmeau, Joel
digcom.contributor.authorJercinovic, Michael J.
digcom.contributor.authorKrause, Joachim
digcom.contributor.authorMarxer, Felix
digcom.contributor.authorNachlas, William O.
digcom.contributor.authorSpratt, John
digcom.date.embargo2023-11-08T00:00:00-08:00
digcom.identifiergeo_faculty_pubs/35
digcom.identifier.contextkey36274757
digcom.identifier.submissionpathgeo_faculty_pubs/35
dspace.entity.typePublication
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