Secondary clay - Revision history

MDerrick: /* Description */

2022-06-16T17:21:06Z

Description

← Older revision		Revision as of 13:21, 16 June 2022
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	Clay that has been deposited away from the site of the parent feldspathic rock. Secondary clays are often carried downstream by rivers producing a fine particle, highly weathered clay that is deposited along the banks or in estuaries. Secondary clays tend to be very plastic and, without the addition of other materials, may shrink severely when dried. However, in most cases, secondary clays have naturally combined with other other minerals, such as silica, iron oxides and calcium carbonate, that can minimize shrinkage. Additionally, any alkaline oxide impurity can act as a flux when the clay is heated and lower the sintering point of the clay. Iron oxide impurities may add red or yellow color to the clay.		Clay that has been deposited away from the site of the parent feldspathic rock. Secondary clays are often carried downstream by rivers producing a fine particle, highly weathered clay that is deposited along the banks or in estuaries. Secondary clays tend to be very plastic and, without the addition of other materials, may shrink severely when dried. However, in most cases, secondary clays have naturally combined with other other minerals, such as silica, iron oxides and calcium carbonate, that can minimize shrinkage. Additionally, any alkaline oxide impurity can act as a flux when the clay is heated and lower the sintering point of the clay. Iron oxide impurities may add red or yellow color to the clay.

	See also [[ball%20clay\|ball clay]], [[red%20clay\|red clay]], [[calcareous\|calcareous clay]], siliceous clay, [[fire%20brick\|fire clay]], [[stoneware~~%20clay~~\|stoneware clay]], ~~[[fusible%20clay\|~~fusible clay]], [[marl\|marl]].		See also [[ball%20clay\|ball clay]], [[red%20clay\|red clay]], [[calcareous\|calcareous clay]], siliceous clay, [[fire%20brick\|fire clay]], [[stoneware\|stoneware clay]], fusible clay, [[marl\|marl]].

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

MDerrick at 17:20, 16 June 2022

2022-06-16T17:20:17Z

← Older revision		Revision as of 13:20, 16 June 2022
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	Clay that has been deposited away from the site of the parent feldspathic rock. Secondary clays are often carried downstream by rivers producing a fine particle, highly weathered clay that is deposited along the banks or in estuaries. Secondary clays tend to be very plastic and, without the addition of other materials, may shrink severely when dried. However, in most cases, secondary clays have naturally combined with other other minerals, such as silica, iron oxides and calcium carbonate, that can minimize shrinkage. Additionally, any alkaline oxide impurity can act as a flux when the clay is heated and lower the sintering point of the clay. Iron oxide impurities may add red or yellow color to the clay.		Clay that has been deposited away from the site of the parent feldspathic rock. Secondary clays are often carried downstream by rivers producing a fine particle, highly weathered clay that is deposited along the banks or in estuaries. Secondary clays tend to be very plastic and, without the addition of other materials, may shrink severely when dried. However, in most cases, secondary clays have naturally combined with other other minerals, such as silica, iron oxides and calcium carbonate, that can minimize shrinkage. Additionally, any alkaline oxide impurity can act as a flux when the clay is heated and lower the sintering point of the clay. Iron oxide impurities may add red or yellow color to the clay.

	See also [[ball%20clay\|ball clay]], [[red%20clay\|red clay]], [[calcareous~~%20clay~~\|calcareous clay]], ~~[[siliceous%20clay\|~~siliceous clay]], [[fire%~~20clay~~\|fire clay]], [[stoneware%20clay\|stoneware clay]], [[fusible%20clay\|fusible clay]], [[marl\|marl]].		See also [[ball%20clay\|ball clay]], [[red%20clay\|red clay]], [[calcareous\|calcareous clay]], siliceous clay, [[fire%20brick\|fire clay]], [[stoneware%20clay\|stoneware clay]], [[fusible%20clay\|fusible clay]], [[marl\|marl]].

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==
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	sedimentary clay; ball clay; arcillas secundarias (Esp.); secundaire klei (Ned.); barro secundário (Port.)		sedimentary clay; ball clay; arcillas secundarias (Esp.); secundaire klei (Ned.); barro secundário (Port.)

	== ~~Sources Checked for Data in Record~~ ==		==Resources and Citations==

	* Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988		* Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988

Jruggiero: Text replace - "\[http:\/\/cameo\.mfa\.org\/materials\/fullrecord\.asp\?name=([^\s]+)\s(.*)\]" to "$2"

2016-05-10T17:08:33Z

Text replace - "\[http:\/\/cameo\.mfa\.org\/materials\/fullrecord\.asp\?name=([^\s]+)\s(.*)\]" to "$2"

← Older revision		Revision as of 13:08, 10 May 2016
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	Clay that has been deposited away from the site of the parent feldspathic rock. Secondary clays are often carried downstream by rivers producing a fine particle, highly weathered clay that is deposited along the banks or in estuaries. Secondary clays tend to be very plastic and, without the addition of other materials, may shrink severely when dried. However, in most cases, secondary clays have naturally combined with other other minerals, such as silica, iron oxides and calcium carbonate, that can minimize shrinkage. Additionally, any alkaline oxide impurity can act as a flux when the clay is heated and lower the sintering point of the clay. Iron oxide impurities may add red or yellow color to the clay.		Clay that has been deposited away from the site of the parent feldspathic rock. Secondary clays are often carried downstream by rivers producing a fine particle, highly weathered clay that is deposited along the banks or in estuaries. Secondary clays tend to be very plastic and, without the addition of other materials, may shrink severely when dried. However, in most cases, secondary clays have naturally combined with other other minerals, such as silica, iron oxides and calcium carbonate, that can minimize shrinkage. Additionally, any alkaline oxide impurity can act as a flux when the clay is heated and lower the sintering point of the clay. Iron oxide impurities may add red or yellow color to the clay.

	See also [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~ball%20clay ball clay], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~red%20clay red clay], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~calcareous%20clay calcareous clay], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~siliceous%20clay siliceous clay], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~fire%20clay fire clay], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~stoneware%20clay stoneware clay], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~fusible%20clay fusible clay], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~marl marl].		See also [[ball%20clay\|ball clay]], [[red%20clay\|red clay]], [[calcareous%20clay\|calcareous clay]], [[siliceous%20clay\|siliceous clay]], [[fire%20clay\|fire clay]], [[stoneware%20clay\|stoneware clay]], [[fusible%20clay\|fusible clay]], [[marl\|marl]].

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

Jruggiero: Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

2016-05-01T23:17:33Z

Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

← Older revision		Revision as of 19:17, 1 May 2016
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	sedimentary clay; ball clay; arcillas secundarias (Esp.); secundaire klei (Ned.); barro secundário (Port.)		sedimentary clay; ball clay; arcillas secundarias (Esp.); secundaire klei (Ned.); barro secundário (Port.)

	== ~~Authority~~ ==		== Sources Checked for Data in Record ==

	* Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988		* Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988

Unknown user at 12:39, 24 July 2013

2013-07-24T12:39:38Z

← Older revision		Revision as of 08:39, 24 July 2013
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	Clay that has been deposited away from the site of the parent feldspathic rock. Secondary clays are often carried downstream by rivers producing a fine particle, highly weathered clay that is deposited along the banks or in estuaries. Secondary clays tend to be very plastic and, without the addition of other materials, may shrink severely when dried. However, in most cases, secondary clays have naturally combined with other other minerals, such as silica, iron oxides and calcium carbonate, that can minimize shrinkage. Additionally, any alkaline oxide impurity can act as a flux when the clay is heated and lower the sintering point of the clay. Iron oxide impurities may add red or yellow color to the clay.		Clay that has been deposited away from the site of the parent feldspathic rock. Secondary clays are often carried downstream by rivers producing a fine particle, highly weathered clay that is deposited along the banks or in estuaries. Secondary clays tend to be very plastic and, without the addition of other materials, may shrink severely when dried. However, in most cases, secondary clays have naturally combined with other other minerals, such as silica, iron oxides and calcium carbonate, that can minimize shrinkage. Additionally, any alkaline oxide impurity can act as a flux when the clay is heated and lower the sintering point of the clay. Iron oxide impurities may add red or yellow color to the clay.

	See also [http://cameo.mfa.org/materials/fullrecord.asp?name=ball ~~clay~~ ball clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=red ~~clay~~ red clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=calcareous ~~clay~~ calcareous clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=siliceous ~~clay~~ siliceous clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=fire ~~clay~~ fire clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=stoneware ~~clay~~ stoneware clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=fusible ~~clay~~ fusible clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=marl marl].		See also [http://cameo.mfa.org/materials/fullrecord.asp?name=ball%20clay ball clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=red%20clay red clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=calcareous%20clay calcareous clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=siliceous%20clay siliceous clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=fire%20clay fire clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=stoneware%20clay stoneware clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=fusible%20clay fusible clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=marl marl].

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

	sedimentary clay; ball clay; arcillas secundarias (Esp.); secundaire klei (Ned.); barro ~~secundrio~~ (Port.)		sedimentary clay; ball clay; arcillas secundarias (Esp.); secundaire klei (Ned.); barro secundário (Port.)

	== Authority ==		== Authority ==

	* ~~Henry Hodges,~~ Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988		* Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988

	* ~~Robert Fournier,~~ Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992		* Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992

	* ''The Dictionary of Art'', Grove's Dictionaries Inc., New York, 1996 Comment: "Ceramic"		* ''The Dictionary of Art'', Grove's Dictionaries Inc., New York, 1996 Comment: "Ceramic"

Unknown user at 18:17, 27 April 2013

2013-04-27T18:17:19Z

New page

== Description ==

Clay that has been deposited away from the site of the parent feldspathic rock. Secondary clays are often carried downstream by rivers producing a fine particle, highly weathered clay that is deposited along the banks or in estuaries. Secondary clays tend to be very plastic and, without the addition of other materials, may shrink severely when dried. However, in most cases, secondary clays have naturally combined with other other minerals, such as silica, iron oxides and calcium carbonate, that can minimize shrinkage. Additionally, any alkaline oxide impurity can act as a flux when the clay is heated and lower the sintering point of the clay. Iron oxide impurities may add red or yellow color to the clay.

See also [http://cameo.mfa.org/materials/fullrecord.asp?name=ball clay ball clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=red clay red clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=calcareous clay calcareous clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=siliceous clay siliceous clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=fire clay fire clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=stoneware clay stoneware clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=fusible clay fusible clay], [http://cameo.mfa.org/materials/fullrecord.asp?name=marl marl].

== Synonyms and Related Terms ==

sedimentary clay; ball clay; arcillas secundarias (Esp.); secundaire klei (Ned.); barro secundrio (Port.)

== Authority ==

* Henry Hodges, Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988

* Robert Fournier, Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992

* ''The Dictionary of Art'', Grove's Dictionaries Inc., New York, 1996 Comment: "Ceramic"

[[Category:Materials database]]