Difference between revisions of "Category:Forbes Pigment Labs: Library of Congress"
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− | Library of Congress, Preservation lab | + | ==Library of Congress, Preservation lab== |
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+ | The Library of Congress pursues preservation research with the aim to forward the National Preservation Research Agenda, which was developed by the Library's Preservation Directorate in consultation with leading scientific laboratories. This matrix of preservation science projects undertaken by libraries, archives, and museums worldwide illustrates the wide range of preservation research, from scientific and forensic characterization studies to the development of conservation treatments. The diversified labs cover projects on materials research, method development, analytical services and quality assurance. More information on current and paat projects is available at [http://http://www.loc.gov/preservation/scientists/index.html Preservation Scientce]. | ||
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+ | == Analytical Projects == | ||
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+ | The Preservation Research and Testing Division analyzes the material composition of the Library's collection items to further scholarly research, conservation treatment, and the preservation of the collections. Analytical tests can characterize the chemical composition and condition of a range of materials, including paints, inks, and pigments, coatings, and substrates such as paper, parchment, and papyrus. | ||
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+ | Reference collections of known and characterized pigment samples can aid specialists in identifying unknown, unstable, or questioned documents and other works. The Library of Congress holds a collection of pigment samples from Harvard’s Forbes’ Pigment Collection. The Forbes’ Pigment Collection is comprised of over 1000 colorants assembled by the late Edward Waldo Forbes, former Director of the Fogg Art Museum at Harvard University. Although the bulk of the collection resides at Harvard University, nineteen additional laboratories around the world share subsets of the collection, including the Library of Congress. This collection has long been used to provide reference samples to aid in the identification of pigments found in conjunction with collections in libraries, archives and museums. | ||
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+ | [[File:LOC pigments.jpg|thumb|Forbes Pigment Collection at the Library of Congress]] | ||
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+ | Specialists study media to better understand the nature of documents and other works. Identifying pigments and other media can enable specialists to authenticate questioned documents or identify documents at risk of deterioration from acidic or other problematic media. Such studies can reduce risks to collections while adding value to the knowledge of a document’s provenance and manufacture. Some media (like iron gall ink or verdigris pigments) are acidic and consequently are at greater risk for deterioration and can even contaminate other collections. Characterizing pigments through their respective optical, chemical and physical properties can help specialists “date” documents, since certain pigments were traditionally used at specific times and places. In addition, specialists can estimate the stability, durability and longevity of documents and media made with unstable pigments that might inherently weaken documents. | ||
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+ | The purpose of the project is to create an “atlas” of pigments, imaged by a scanning electron microscope (SEM) and matched to their Energy Dispersive X-ray Spectroscopy spectra. This will provide, in conjunction with data from other institutions, a database of known pigment characteristics to aid scholars and preservation specialists in the identification of pigmented media present in the Library’s collections. |
Latest revision as of 12:00, 8 September 2016
Library of Congress, Preservation lab
The Library of Congress pursues preservation research with the aim to forward the National Preservation Research Agenda, which was developed by the Library's Preservation Directorate in consultation with leading scientific laboratories. This matrix of preservation science projects undertaken by libraries, archives, and museums worldwide illustrates the wide range of preservation research, from scientific and forensic characterization studies to the development of conservation treatments. The diversified labs cover projects on materials research, method development, analytical services and quality assurance. More information on current and paat projects is available at Preservation Scientce.
Analytical Projects
The Preservation Research and Testing Division analyzes the material composition of the Library's collection items to further scholarly research, conservation treatment, and the preservation of the collections. Analytical tests can characterize the chemical composition and condition of a range of materials, including paints, inks, and pigments, coatings, and substrates such as paper, parchment, and papyrus.
Reference collections of known and characterized pigment samples can aid specialists in identifying unknown, unstable, or questioned documents and other works. The Library of Congress holds a collection of pigment samples from Harvard’s Forbes’ Pigment Collection. The Forbes’ Pigment Collection is comprised of over 1000 colorants assembled by the late Edward Waldo Forbes, former Director of the Fogg Art Museum at Harvard University. Although the bulk of the collection resides at Harvard University, nineteen additional laboratories around the world share subsets of the collection, including the Library of Congress. This collection has long been used to provide reference samples to aid in the identification of pigments found in conjunction with collections in libraries, archives and museums.
Specialists study media to better understand the nature of documents and other works. Identifying pigments and other media can enable specialists to authenticate questioned documents or identify documents at risk of deterioration from acidic or other problematic media. Such studies can reduce risks to collections while adding value to the knowledge of a document’s provenance and manufacture. Some media (like iron gall ink or verdigris pigments) are acidic and consequently are at greater risk for deterioration and can even contaminate other collections. Characterizing pigments through their respective optical, chemical and physical properties can help specialists “date” documents, since certain pigments were traditionally used at specific times and places. In addition, specialists can estimate the stability, durability and longevity of documents and media made with unstable pigments that might inherently weaken documents.
The purpose of the project is to create an “atlas” of pigments, imaged by a scanning electron microscope (SEM) and matched to their Energy Dispersive X-ray Spectroscopy spectra. This will provide, in conjunction with data from other institutions, a database of known pigment characteristics to aid scholars and preservation specialists in the identification of pigmented media present in the Library’s collections.
Pages in category "Forbes Pigment Labs: Library of Congress"
The following 54 pages are in this category, out of 454 total.
9
- 9.01.15 Terra Verde
- 9.01.16 Terre Verde
- 9.01.23 Terre Verde
- 9.01.24 Terre Verde di Verona
- 9.01.25 Terre Verte
- 9.01.26 Terre Verde naturale (Said to be terre verde naturale I suspect it is not)
- 9.01.27 Terre Verde and Flake White
- 9.01.28 Newman's Terra Verde(?)
- 9.01.29 Terra verde di Verona
- 9.01.31 Terre Verte
- 9.01.32 Terra Verde
- 9.01.33 Terre Verte
- 9.02.06 Malachite
- 9.02.07 Malachite green
- 9.02.08 Malachite Green
- 9.02.09 Malachite green
- 9.02.10 Malachite Green
- 9.02.11 Newman's Malachite
- 9.03.04 Verdigris
- 9.05.04 Cobalt Green medium
- 9.05.05 Cobalt Green Light
- 9.05.07 Cobalt Green
- 9.06.04 Emerald Green
- 9.06.05 (Emerald Green)
- 9.06.06 Vert Emeraude
- 9.06.07 Emerald Green
- 9.06.09 Vert Emeraude
- 9.07.08 Chromgrun
- 9.07.09 Olivegrun
- 9.07.10 Yellow Green
- 9.07.12? Chrome green
- 9.08.03 Tested by Gettens
- 9.08.04 Ultramarine Green
- 9.09.02 Viridian
- 9.09.03 Viridian
- 9.09.04 Viridian
- 9.10.04 Oxide of chromium
- 9.11.03 Alizarin Green
- 9.12.02 Vernalis
- 9.12.03 Verde de Cipresso
- 9.12.04 Green Jasper
- 9.12.05 Unidentified Green
- 9.12.06 Greenish Soapstone
- 9.20.01 Rokusho mineral green (natural malachite)
- 9.20.03 Byakuroku
- 9.20.04 Kodai Rodakusho. 9.20.1 treated by burning
- 9.20.11 Usu Roku
- 9.20.12 Byaku Rokusho malachite 11A
- 9.20.13 Usu Rokusho malachite 9A
- 9.20.14 Rokusho malachite 7A
- 9.20.15 Malachite 18