J Victor Owens
Dados Biográficos
| ID | 353769 |
|---|---|
| NOME | J Victor Owens |
| PRENOMES | J Victor |
| SOBRENOME | Owens |
| ASSINATURA | OWENS J V |
| AFILIAÇÕES | Saint Mary's University |
| ORCID | 0000-0001-5741-8473 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 34 |
| TOTAL DE CITAÇÕES | 99 |
| TOTAL COMO AUTOR | 34 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1994 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2021 |
| ÍNDICE H | 5 |
Optimal Elemental Characterization of Historical High-Fired Ceramic Wares
Lead-poor Isleworth porcelain (London c. 1766–1790)
Phosphatic alteration of lead-rich glazes during two centuries of burial
Development of an Integrated Body-Glaze Layer on an 18th-Century Lead-Glazed True Porcelain Teapot from Philadelphia
Compositional Characteristics of Jamestown “Tryal” Glass (Virginia, ca 1608)
Mineralogical and Geochemical Constraints on the Sediment Sources of Late Stone Age Pottery from the Birimi Site, Northern Ghana
The mineralogy and bulk chemical compositions of 15 Kintampo (Late Stone Age) potsherds from the Birimi site on the Gambaga Escarpment and eight samples of local sediment were determined with the intent of characterizing these wares and identifying the material used in their manufacture. Sediment from clay pits still used by potters north of the escarpment contains iron‐rich laterite clasts (100 × XFeO t = 100 × FeO t /[FeO t + Al 2 O 3 + SiO 2 ]…
Microstructures of phosphatic porcelain from sintering to vitrification
Eight phosphatic porcelain sherds recovered from various historical sites in Charleston were analyzed by electron microprobe. Some sherds contain sulfur (2.3–3.1wt.% SO 3 ); others contain only traces of this component. The analytical data suggest that the sulfurous sherds are Bow porcelain (London, Bowcock period, ca. 1755–1769). The origin(s) of the low‐S samples remains unidentified; one compositionally resembles “gold‐anchor period” (phosphat…
Geochemistry of sauceboats excavated from Independence National Historical Park (Philadelphia)
Influence of Potsdam sandstone on the trace element signatures of some 19th‐century American and Canadian glass
Potsdam sandstone from quarries and outcrops near 19th‐century glassworks sites in Redwood, NY, and Saranac, NY, Mallorytown, ON, and Como and Hudson, QC, commonly contains _97% silica, so in terms of its purity can compete with other historical producers of silica sand (e.g., Cheshire quartzite, MA; southern New Jersey sand). Exploratory analysis of trace element data using multidimensional scaling (MDS) shows that geographically distinct source…
Too little, too late
Pyrometamorphism of 19th‐century kiln artifacts from Caledonia Springs, Ontario, Canada
Marked, 19th‐century kiln bricks and rocks from Caledonia Springs (CS) have black glass coatings that can easily be mistaken for glass produced at the elusive CS glassworks (c. 1844–1846). The glass‐on‐brick material, however, is more aluminous (nearly 20% Al 2 O 3 ) than virtually any analyzed historical glass, and the glass‐on‐rock is compositionally similar to the rock itself, which shows clear signs of having undergone extensive melting. Mine…
From London to Liverpool
The diversity of Brownlow Hill porcelains of the W m Reid & Co. era is due to the remarkably wide range in the composition of their pastes and glazes and inferred firing conditions relative to the initial vitrification temperature. Sixteen of 21 analyzed sherds from the factory site are bone‐ash wares that display large variations in their bulk chemical composition. The remaining samples have silicious‐aluminous (akin to “stone china” sensu Richa…
The Geochemistry of Worcester Porcelain from Dr. Wall to Royal Worcester
A rose by any other name
Compositional data for sherds from various Shropshire factory sites show that at the Coalport works, John Rose and colleagues produced two types of true porcelain that differed in their phosphate content, and bone-ash porcelain. The low-phosphate true porcelain is compositionally similar to its Caughley counterpart; there is, however, no knwn analogue to the relatively phosphatic (0.7–2.7 wt.% P2O5) true porcelain, which appears to have been prod…
Geochemical and mineralogical distinctions between Bonnin and Morris (Philadelphia, 1770–1772) porcelain and some contemporary British phosphatic wares
The major element compositions of 15 ceramic sherds from the Bonnin and Morris factory site were determined by electron microprobe. Thirteen samples are phosphatic; the others consist of (a) “soapstone” (magnesian/plombian) and (b) true porcelain, and are interpreted as exotic artifacts, as is one compositionally distinct (relatively SiO 2 ‐poor, P 2 O 5 +CaO‐rich) phosphatic sample. Although long considered to be virtually indistinguishable from…
Provenience of eighteenth-century british porcelain sherds from sites 3b and 4e, fortress of Louisbourg, Nova Scotia
The origin and use of basalt in Old Kingdom funerary temples
Conventional petrographic analysis suggests that basalts in Old Kingdom funerary temples are mineralogically and texturally similar to the Haddadin basalt flow of northern Egypt. To affirm that the Haddadin flow is the stone source, a total of 88 augite and 74 plagioclase electron microprobe analyses were obtained from two Abu Sir (Sahure, Fifth Dynasty) and three Giza (Khufu, Fourth Dynasty) temple paving stone samples and compared to all known,…
Nicholas Crisp's “Porcellien”
The character of porcelain wares made by Nicholas Crisp early and late in his career was assessed using microchemical and petrographic data for sherds excavated from the sites of the factories he operated at Vauxhall and Bovey Tracey. The results indicate that, over time, Crisp increasingly made use of diverse types of pastes as he struggled to produce a commercially viable line of porcelain. Based on the analysis of a limited number of samples, …
The origin and use of basalt in Old Kingdom funerary temples
Conventional petrographic analysis suggests that basalts in Old Kingdom funerary temples are mineralogically and texturally similar to the Haddadin basalt flow of northern Egypt. To affirm that the Haddadin flow is the stone source, a total of 88 augite and 74 plagioclase electron microprobe analyses were obtained from two Abu Sir (Sahure, Fifth Dynasty) and three Giza (Khufu, Fourth Dynasty) temple paving stone samples and compared to all known,…
Nicholas Crisp's ?Porcellien
The character of porcelain wares made by Nicholas Crisp early and late in his career was assessed using microchemical and petrographic data for sherds excavated from the sites of the factories he operated at Vauxhall and Bovey Tracey. The results indicate that, over time, Crisp increasingly made use of diverse types of pastes as he struggled to produce a commercially viable line of porcelain. Based on the analysis of a limited number of samples, …
Sagged phosphatic Nantgarw porcelain (ca. 1813-1820)
Nantgarw phosphatic (bone-ash) porcelain (ca. 1813–1820) is renowned for its translucency and the high quality of its enamel decoration. However, only a small proportion of its wares (perhaps 10%) were successfully fired due to sagging (body distortion) and other problems. This indicates that: (1) In terms of its potential for generating a minimum melt, the Nantgarw paste had an unusually fertile composition, or (2) Nantgarw's staff had difficult…
The Stone Source of Predynastic Basalt Vessels
Fingerprinting Ancient Egyptian Quarries
Microchemical analysis of minerals present in pottery and stone artefacts may help determine their provenance. Electron microprobe major element analyses of augite suggest that minor elements (Ti0 2 ,MnO, Aa 2 O) are important in fingerprinting basalts. This points to the potential usefulness of trace elements. Augite present in six basalt samples (representing all known/suspected Pharaonic basalt quarries in northern and middle Egypt) and basalt…
Assessing and correcting the effects of the chemical weathering of potsherds
Unglazed soft-paste porcelain wasters from the Longton Hall factory site are variably depleted (75–80 rel %) in CaO relative to comparatively insoluble components (e.g., Al2O3, TiO2) due to the dissolution of wollastonite (CaSiO3, a pyroxenoid) by subsurface water. The degree of desilicification is variable (0–45 rel % SiO2). Petrographic data and element-abundance plots suggest that these were the principal effects of the chemical weathering pro…
Provenance of temper in a New Kingdom Egyptian pottery sherd
A New Kingdom spinning bowl from Karnak (Luxor) Egypt is similar in form to spinning bowls commonly found at other Egyptian sites and has a bulk chemical composition in the range for other Egyptian marl vessels. These data support a domestic origin. The matrix of the bowl contains unaltered, sand-sized, mafic rock fragments with volcanic, subophitic textures. Over 20% of the sand-sized grains consist of angular, unweathered rock fragments, and of…
New Data For Old Pots
Petrology of Gilbody, Pennington and Christian/Pennington (18th Century Liverpool) Porcelains and their Distinction from some Contemporary Phosphatic and Magnesian/Plombian British Wares
A Tale of Two Cities
Quantification of Early Worcester Porcelain Recipes and the Distinction between Dr Wall- and Flight-period Wares
Compositional Characteristics of 18th Century Derby Porcelains
On the earliest products (ca. 1751–1752) of the Worcester porcelain manufactory
Phosphatic alteration of lead-rich glazes during two centuries of burial
Provenience of eighteenth-century british porcelain sherds from sites 3b and 4e, fortress of Louisbourg, Nova Scotia
The Stone Source of Predynastic Basalt Vessels
Compositional constraints on the identification of Eighteenth-Century porcelain sherds from fort Beauséjour, New Brunswick, and Grassy Island, Nova Scotia, Canada
Development of an Integrated Body-Glaze Layer on an 18th-Century Lead-Glazed True Porcelain Teapot from Philadelphia
Mineralogical and Geochemical Constraints on the Sediment Sources of Late Stone Age Pottery from the Birimi Site, Northern Ghana
The mineralogy and bulk chemical compositions of 15 Kintampo (Late Stone Age) potsherds from the Birimi site on the Gambaga Escarpment and eight samples of local sediment were determined with the intent of characterizing these wares and identifying the material used in their manufacture. Sediment from clay pits still used by potters north of the escarpment contains iron‐rich laterite clasts (100 × XFeO t = 100 × FeO t /[FeO t + Al 2 O 3 + SiO 2 ]…
Too little, too late
The Geochemistry of Worcester Porcelain from Dr. Wall to Royal Worcester
Geochemistry of sauceboats excavated from Independence National Historical Park (Philadelphia)
Geochemical and mineralogical distinctions between Bonnin and Morris (Philadelphia, 1770–1772) porcelain and some contemporary British phosphatic wares
The major element compositions of 15 ceramic sherds from the Bonnin and Morris factory site were determined by electron microprobe. Thirteen samples are phosphatic; the others consist of (a) “soapstone” (magnesian/plombian) and (b) true porcelain, and are interpreted as exotic artifacts, as is one compositionally distinct (relatively SiO 2 ‐poor, P 2 O 5 +CaO‐rich) phosphatic sample. Although long considered to be virtually indistinguishable from…
Optimal Elemental Characterization of Historical High-Fired Ceramic Wares
Compositional Characteristics of Jamestown “Tryal” Glass (Virginia, ca 1608)
Microstructures of phosphatic porcelain from sintering to vitrification
Eight phosphatic porcelain sherds recovered from various historical sites in Charleston were analyzed by electron microprobe. Some sherds contain sulfur (2.3–3.1wt.% SO 3 ); others contain only traces of this component. The analytical data suggest that the sulfurous sherds are Bow porcelain (London, Bowcock period, ca. 1755–1769). The origin(s) of the low‐S samples remains unidentified; one compositionally resembles “gold‐anchor period” (phosphat…
Influence of Potsdam sandstone on the trace element signatures of some 19th‐century American and Canadian glass
Potsdam sandstone from quarries and outcrops near 19th‐century glassworks sites in Redwood, NY, and Saranac, NY, Mallorytown, ON, and Como and Hudson, QC, commonly contains _97% silica, so in terms of its purity can compete with other historical producers of silica sand (e.g., Cheshire quartzite, MA; southern New Jersey sand). Exploratory analysis of trace element data using multidimensional scaling (MDS) shows that geographically distinct source…
From London to Liverpool
The diversity of Brownlow Hill porcelains of the W m Reid & Co. era is due to the remarkably wide range in the composition of their pastes and glazes and inferred firing conditions relative to the initial vitrification temperature. Sixteen of 21 analyzed sherds from the factory site are bone‐ash wares that display large variations in their bulk chemical composition. The remaining samples have silicious‐aluminous (akin to “stone china” sensu Richa…
Fingerprinting Ancient Egyptian Quarries
Microchemical analysis of minerals present in pottery and stone artefacts may help determine their provenance. Electron microprobe major element analyses of augite suggest that minor elements (Ti0 2 ,MnO, Aa 2 O) are important in fingerprinting basalts. This points to the potential usefulness of trace elements. Augite present in six basalt samples (representing all known/suspected Pharaonic basalt quarries in northern and middle Egypt) and basalt…
Estimation of the Bulk Composition of Fine‐grained Media From Microchemical and Backscatter‐image Analysis
Microprobe and digitized electron‐backscatter image data reveal that eighteenth‐century Bow porcelain consists of a silica polymorph(s) (25–43 vol. %), a calcium phosphate phase (42–55%) with homogeneous and stippled textural variants, and a silicon‐, aluminium‐, and calcium‐rich, former melt phase represented by discrete domains (14–20%) and micron‐scale blebs that occupy 20–70% of the stippled calcium phosphate. Bulk compositions calculated fro…
Estimation of the Bulk Composition of Fine‐grained Media From Microchemical and Backscatter‐image Analysis
Microprobe and digitized electron‐backscatter image data reveal that eighteenth‐century Bow porcelain consists of a silica polymorph(s) (25–43 vol. %), a calcium phosphate phase (42–55%) with homogeneous and stippled textural variants, and a silicon‐, aluminium‐, and calcium‐rich, former melt phase represented by discrete domains (14–20%) and micron‐scale blebs that occupy 20–70% of the stippled calcium phosphate. Bulk compositions calculated fro…
Compositional constraints on the identification of Eighteenth-Century porcelain sherds from fort Beauséjour, New Brunswick, and Grassy Island, Nova Scotia, Canada
Quantification of Early Worcester Porcelain Recipes and the Distinction between Dr Wall- and Flight-period Wares
Compositional Characteristics of 18th Century Derby Porcelains
Assessing and correcting the effects of the chemical weathering of potsherds
Unglazed soft-paste porcelain wasters from the Longton Hall factory site are variably depleted (75–80 rel %) in CaO relative to comparatively insoluble components (e.g., Al2O3, TiO2) due to the dissolution of wollastonite (CaSiO3, a pyroxenoid) by subsurface water. The degree of desilicification is variable (0–45 rel % SiO2). Petrographic data and element-abundance plots suggest that these were the principal effects of the chemical weathering pro…
Provenance of temper in a New Kingdom Egyptian pottery sherd
A New Kingdom spinning bowl from Karnak (Luxor) Egypt is similar in form to spinning bowls commonly found at other Egyptian sites and has a bulk chemical composition in the range for other Egyptian marl vessels. These data support a domestic origin. The matrix of the bowl contains unaltered, sand-sized, mafic rock fragments with volcanic, subophitic textures. Over 20% of the sand-sized grains consist of angular, unweathered rock fragments, and of…
Assessing and correcting the effects of the chemical weathering of potsherds
Unglazed soft-paste porcelain wasters from the Longton Hall factory site are variably depleted (75–80 rel %) in CaO relative to comparatively insoluble components (e.g., Al2O3, TiO2) due to the dissolution of wollastonite (CaSiO3, a pyroxenoid) by subsurface water. The degree of desilicification is variable (0–45 rel % SiO2). Petrographic data and element-abundance plots suggest that these were the principal effects of the chemical weathering pro…
On the earliest products (ca. 1751–1752) of the Worcester porcelain manufactory
Petrology of Gilbody, Pennington and Christian/Pennington (18th Century Liverpool) Porcelains and their Distinction from some Contemporary Phosphatic and Magnesian/Plombian British Wares
New Data For Old Pots
A Tale of Two Cities
Sagged phosphatic Nantgarw porcelain (ca. 1813-1820)
Nantgarw phosphatic (bone-ash) porcelain (ca. 1813–1820) is renowned for its translucency and the high quality of its enamel decoration. However, only a small proportion of its wares (perhaps 10%) were successfully fired due to sagging (body distortion) and other problems. This indicates that: (1) In terms of its potential for generating a minimum melt, the Nantgarw paste had an unusually fertile composition, or (2) Nantgarw's staff had difficult…
The Stone Source of Predynastic Basalt Vessels
Fingerprinting Ancient Egyptian Quarries
Microchemical analysis of minerals present in pottery and stone artefacts may help determine their provenance. Electron microprobe major element analyses of augite suggest that minor elements (Ti0 2 ,MnO, Aa 2 O) are important in fingerprinting basalts. This points to the potential usefulness of trace elements. Augite present in six basalt samples (representing all known/suspected Pharaonic basalt quarries in northern and middle Egypt) and basalt…
The origin and use of basalt in Old Kingdom funerary temples
Conventional petrographic analysis suggests that basalts in Old Kingdom funerary temples are mineralogically and texturally similar to the Haddadin basalt flow of northern Egypt. To affirm that the Haddadin flow is the stone source, a total of 88 augite and 74 plagioclase electron microprobe analyses were obtained from two Abu Sir (Sahure, Fifth Dynasty) and three Giza (Khufu, Fourth Dynasty) temple paving stone samples and compared to all known,…
Nicholas Crisp's “Porcellien”
The character of porcelain wares made by Nicholas Crisp early and late in his career was assessed using microchemical and petrographic data for sherds excavated from the sites of the factories he operated at Vauxhall and Bovey Tracey. The results indicate that, over time, Crisp increasingly made use of diverse types of pastes as he struggled to produce a commercially viable line of porcelain. Based on the analysis of a limited number of samples, …
The origin and use of basalt in Old Kingdom funerary temples
Conventional petrographic analysis suggests that basalts in Old Kingdom funerary temples are mineralogically and texturally similar to the Haddadin basalt flow of northern Egypt. To affirm that the Haddadin flow is the stone source, a total of 88 augite and 74 plagioclase electron microprobe analyses were obtained from two Abu Sir (Sahure, Fifth Dynasty) and three Giza (Khufu, Fourth Dynasty) temple paving stone samples and compared to all known,…
Nicholas Crisp's ?Porcellien
The character of porcelain wares made by Nicholas Crisp early and late in his career was assessed using microchemical and petrographic data for sherds excavated from the sites of the factories he operated at Vauxhall and Bovey Tracey. The results indicate that, over time, Crisp increasingly made use of diverse types of pastes as he struggled to produce a commercially viable line of porcelain. Based on the analysis of a limited number of samples, …
Geochemical and mineralogical distinctions between Bonnin and Morris (Philadelphia, 1770–1772) porcelain and some contemporary British phosphatic wares
The major element compositions of 15 ceramic sherds from the Bonnin and Morris factory site were determined by electron microprobe. Thirteen samples are phosphatic; the others consist of (a) “soapstone” (magnesian/plombian) and (b) true porcelain, and are interpreted as exotic artifacts, as is one compositionally distinct (relatively SiO 2 ‐poor, P 2 O 5 +CaO‐rich) phosphatic sample. Although long considered to be virtually indistinguishable from…
Provenience of eighteenth-century british porcelain sherds from sites 3b and 4e, fortress of Louisbourg, Nova Scotia
From London to Liverpool
The diversity of Brownlow Hill porcelains of the W m Reid & Co. era is due to the remarkably wide range in the composition of their pastes and glazes and inferred firing conditions relative to the initial vitrification temperature. Sixteen of 21 analyzed sherds from the factory site are bone‐ash wares that display large variations in their bulk chemical composition. The remaining samples have silicious‐aluminous (akin to “stone china” sensu Richa…
The Geochemistry of Worcester Porcelain from Dr. Wall to Royal Worcester
A rose by any other name
Compositional data for sherds from various Shropshire factory sites show that at the Coalport works, John Rose and colleagues produced two types of true porcelain that differed in their phosphate content, and bone-ash porcelain. The low-phosphate true porcelain is compositionally similar to its Caughley counterpart; there is, however, no knwn analogue to the relatively phosphatic (0.7–2.7 wt.% P2O5) true porcelain, which appears to have been prod…
Pyrometamorphism of 19th‐century kiln artifacts from Caledonia Springs, Ontario, Canada
Marked, 19th‐century kiln bricks and rocks from Caledonia Springs (CS) have black glass coatings that can easily be mistaken for glass produced at the elusive CS glassworks (c. 1844–1846). The glass‐on‐brick material, however, is more aluminous (nearly 20% Al 2 O 3 ) than virtually any analyzed historical glass, and the glass‐on‐rock is compositionally similar to the rock itself, which shows clear signs of having undergone extensive melting. Mine…
Influence of Potsdam sandstone on the trace element signatures of some 19th‐century American and Canadian glass
Potsdam sandstone from quarries and outcrops near 19th‐century glassworks sites in Redwood, NY, and Saranac, NY, Mallorytown, ON, and Como and Hudson, QC, commonly contains _97% silica, so in terms of its purity can compete with other historical producers of silica sand (e.g., Cheshire quartzite, MA; southern New Jersey sand). Exploratory analysis of trace element data using multidimensional scaling (MDS) shows that geographically distinct source…
Geology (33 obras) · Cultural Heritage Materials Analysis (32 obras) · Mineralogy (27 obras) · Building materials and conservation (26 obras) · Archaeology (23 obras) · Materials Science (20 obras) · Metallurgy (18 obras) · Geochemistry (16 obras) · History (12 obras) · History (11 obras)