C 6.17. Blooms; calcite deposits
A general term is used to describe any whitish or greyish deposit on the surface of a document – blooms.
If there is reason to believe that calcite is deposited on the surface of the degraded parchment, the damage is called deposits, for short.
Visual rigidity, fragility and glass-like areas of parchment are an indication of parchment degradation, i.e. changes in the chemical properties and a decrease in physical strength and hydrothermal stability. The process is often accompanied by white deposits, i.e. the formation of calcite (crystallized mineral CaCO3) and/or gypsum (CaSO4 + 2H2O) on the parchment surface.
Ürik AM.104.5.14, 18. saj.
Kirme. Sade.
Tugevalt degradeerunud ala pärgamendis, millega kaasnevad deformatsioon, materjali kokkutõmbumine ja valkja hallika sademena kaltsiidi väljasadenemine degradeerunud pärgamendi pinnal.
A severely degraded area in parchment, accompanied by deformation, shrinkage of the material, and precipitation of calcite as a whitish-gray precipitate on the surface of the degraded parchment.
Ürik EAA.957.1, 1553. a.
Kirme. Sade.
Tugevalt degradeerunud ala pärgamendis, millega kaasnevad deformatsioon, materjali kokkutõmbumine ja valkja hallika sademena kaltsiidi väljasadenemine degradeerunud pärgamendi pinnal.
A severely degraded area in parchment, accompanied by deformation, shrinkage of the material, and precipitation of calcite as a whitish-gray precipitate on the surface of the degraded parchment.
Kirme. sade.
Valkja hallika kristalse sademena väljasadenenud kaltsiid degradeerunud pärgamendist pitseri kinnitusriba otste pinnal.
Calcite precipitated as a whitish-gray crystalline precipitate on the surface of the ends of the sealing strip of degraded parchment.
Kirme. Sade.
Valkja hallika sademena väljasadenenud kaltsiid degradeerunud pärgamendi pinnal.
Calcite precipitated as a whitish gray precipitate on the surface of degraded parchment.
Kirme. Sade.
Valkja hallika sademena väljasadenenud kaltsiid degradeerunud pärgamendi pinnal.
Calcite precipitated as a whitish gray precipitate on the surface of degraded parchment.
Ürik TLA.230.1-i.712, 1465. a.
Kirme. Sade.
Valkja hallika sademena väljasadenenud kaltsiid degradeerunud pärgamendi pinnal.
Pindmise kihi olemasolu üriku tagumisel poolel kiirendab pärgamendi degradeerumist. Tugeva degradeerumise tulemusena sadeneb pärgamendi pinnalähedasest alast pinnale kaltsiid, mis on nähtav pinnal valge sademena.
Calcite precipitated as a whitish gray precipitate on the surface of degraded parchment.
The presence of a surface layer on the back side of the document accelerates the degradation of the parchment. As a result of severe degradation, calcite is deposited from the area near the surface of the parchment to the surface, which is visible on the surface as a white precipitate.
Kirme. Sade.
Valkja hallika sademena väljasadenenud kaltsiid degradeerunud pärgamendi pinnal.
Dokumenteeritud kaldvalguses.
Calcite precipitated as a whitish gray precipitate on the surface of degraded parchment.
Documented in oblique light.
Kirme. Sade.
Valkja hallika sademena väljasadenenud kaltsiid degradeerunud pärgamendi pinnal.
Calcite precipitated as a whitish gray precipitate on the surface of degraded parchment.
Ürik TLA.230.1-i.836, 1491. a.
Kirme. Sade.
Valkja hallika sademena väljasadenenud kaltsiid degradeerunud pärgamendi pinnal.
Calcite deposited as a whitish gray precipitate on the surface of degraded parchment.