Shell - Revision history

MDerrick at 18:37, 16 December 2022

2022-12-16T18:37:08Z

← Older revision		Revision as of 13:37, 16 December 2022
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	shells; seashell; tortoiseshell; eggshell; coquille (Fr.)		shells; seashell; tortoiseshell; eggshell; coquille (Fr.)
	~~[[[SliderGallery rightalign\|Aragonite 2.TIF~FTIR (MFA)\|Aragonite (HU Min. Museum 116189), 50X, 785 nm copy.tif~Raman (MFA)\|aragonite.jpg~Chemical structure]]]~~

	~~== Risks ==~~
	* No significant hazards.
	* ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC423510025&productDescription=CALCIUM+CARBONATE+99%2BACS+2.5KG&vendorId=VN00032119&countryCode=US&language=en SDS]
	~~== Physical and Chemical Properties ==~~
	* Reacts with acids to evolve carbon dioxide.
	* Aragonite is harder and denser than calcite
	* Fracture = uneven to splinter
	* Luster = greasy or pearly
	* Streak = white
	* Fluorescence = variable
	* Birefringence = strong (0.155) showing interference colors
	* Straight extinction

	~~{\| class="wikitable"~~
	\|-
	~~! scope="row"\| Mohs Hardness~~
	~~\| 3.5 - 4.0~~
	\|-
	~~! scope="row"\| Density~~
	~~\| 2.93-2.95 g/ml~~
	\|-
	~~! scope="row"\| Refractive Index~~
	~~\| 1.530 - 1.686~~
	\|}

	==Resources and Citations==		==Resources and Citations==

MDerrick: /* Description */

2022-12-16T18:36:12Z

Description

← Older revision		Revision as of 13:36, 16 December 2022
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	== Description ==		== Description ==
	[[File:1994.420-SC1902.jpg\|thumb\|Mask with shells<br>MFA# 1994.420]]		[[File:1994.420-SC1902.jpg\|thumb\|Mask with shells<br>MFA# 1994.420]]
	The hard outer covering or case of an animal, mollusk, insect, nut, or egg.		( Biology) The hard outer covering or case of an animal, mollusk, insect, nut, or egg.

	For more information see [[eggshell\|eggshell]], [[seashell\|seashell]], [[oyster%20shell\|oyster shell]], [[tortoiseshell\|tortoiseshell]], and [[walnut%20shell\|walnut shell]].		For more information see [[eggshell\|eggshell]], [[seashell\|seashell]], [[oyster%20shell\|oyster shell]], [[tortoiseshell\|tortoiseshell]], and [[walnut%20shell\|walnut shell]].

MDerrick: /* Resources and Citations */

2022-12-16T18:35:35Z

Resources and Citations

← Older revision		Revision as of 13:35, 16 December 2022
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	==Resources and Citations==		==Resources and Citations==
			* Gem Identification Lab Manual, Gemological Institute of America, 2016.
	* Oppi Untracht, ''Jewelry Concepts and Technology'', Doubleday & Co., Inc., New York City, 1985		* Oppi Untracht, ''Jewelry Concepts and Technology'', Doubleday & Co., Inc., New York City, 1985

	* Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982		* Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982

	* A.Lucas, J.R.Harris, ''Ancient Egyptian Materials and Industries'', Edward Arnold Publishers Ltd., London, 4th edition, 1962		* A.Lucas, J.R.Harris, ''Ancient Egyptian Materials and Industries'', Edward Arnold Publishers Ltd., London, 4th edition, 1962

	* Art and Architecture Thesaurus Online, http ://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000		* Art and Architecture Thesaurus Online, http ://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000

MDerrick: /* Physical and Chemical Properties */

2022-12-16T18:34:53Z

Physical and Chemical Properties

← Older revision		Revision as of 13:34, 16 December 2022
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	== Physical and Chemical Properties ==		== Physical and Chemical Properties ==
	* Reacts with acids to evolve carbon dioxide.		* Reacts with acids to evolve carbon dioxide.
	* Aragonite is harder and denser than calcite.		* Aragonite is harder and denser than calcite
	* Fracture = ~~subconchoidal.~~		* Fracture = uneven to splinter
	* Luster = ~~vitreous to resinous.~~		* Luster = greasy or pearly
	* Transparent to translucent.
	* Streak = white		* Streak = white
	* Fluorescence = variable		* Fluorescence = variable
	* Birefringence = strong showing interference colors		* Birefringence = strong (0.155) showing interference colors
	* Straight extinction		* Straight extinction

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	\|-		\|-
	! scope="row"\| Refractive Index		! scope="row"\| Refractive Index
	\| 1.530~~, 1.682,~~ 1.686		\| 1.530 - 1.686
	\|}		\|}

	==Resources and Citations==		==Resources and Citations==

MDerrick at 18:32, 16 December 2022

2022-12-16T18:32:52Z

← Older revision		Revision as of 13:32, 16 December 2022
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	* ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC423510025&productDescription=CALCIUM+CARBONATE+99%2BACS+2.5KG&vendorId=VN00032119&countryCode=US&language=en SDS]		* ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC423510025&productDescription=CALCIUM+CARBONATE+99%2BACS+2.5KG&vendorId=VN00032119&countryCode=US&language=en SDS]
	== Physical and Chemical Properties ==		== Physical and Chemical Properties ==

	* Orthorhombic crystal system with platy or fibrous, acicular crystals that are often twinned
	* Reacts with acids to evolve carbon dioxide.		* Reacts with acids to evolve carbon dioxide.
	* Aragonite is harder and denser than calcite.		* Aragonite is harder and denser than calcite.

MDerrick at 18:32, 16 December 2022

2022-12-16T18:32:27Z

← Older revision		Revision as of 13:32, 16 December 2022
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	shells; seashell; tortoiseshell; eggshell; coquille (Fr.)		shells; seashell; tortoiseshell; eggshell; coquille (Fr.)
			[[[SliderGallery rightalign\|Aragonite 2.TIF~FTIR (MFA)\|Aragonite (HU Min. Museum 116189), 50X, 785 nm copy.tif~Raman (MFA)\|aragonite.jpg~Chemical structure]]]

			== Risks ==
			* No significant hazards.
			* ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC423510025&productDescription=CALCIUM+CARBONATE+99%2BACS+2.5KG&vendorId=VN00032119&countryCode=US&language=en SDS]
			== Physical and Chemical Properties ==

			* Orthorhombic crystal system with platy or fibrous, acicular crystals that are often twinned
			* Reacts with acids to evolve carbon dioxide.
			* Aragonite is harder and denser than calcite.
			* Fracture = subconchoidal.
			* Luster = vitreous to resinous.
			* Transparent to translucent.
			* Streak = white
			* Fluorescence = variable
			* Birefringence = strong showing interference colors
			* Straight extinction

			{\| class="wikitable"
			\|-
			! scope="row"\| Mohs Hardness
			\| 3.5 - 4.0
			\|-
			! scope="row"\| Density
			\| 2.93-2.95 g/ml
			\|-
			! scope="row"\| Refractive Index
			\| 1.530, 1.682, 1.686
			\|}
	==Resources and Citations==		==Resources and Citations==

MDerrick at 20:46, 30 May 2022

2022-05-30T20:46:33Z

← Older revision		Revision as of 15:46, 30 May 2022
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	[[File:1988.1214-SC33903.jpg\|thumb\|<br>MFA# 1988.1214]]		[[File:1988.1214-SC33903.jpg\|thumb\|Conch shell trumpet<br>MFA# 1988.1214]]
	== Description ==		== Description ==
	[[File:1994.420-SC1902.jpg\|thumb\|<br>MFA# 1994.420]		[[File:1994.420-SC1902.jpg\|thumb\|Mask with shells<br>MFA# 1994.420]]
	The hard outer covering or case of an animal, mollusk, insect, nut, or egg.		The hard outer covering or case of an animal, mollusk, insect, nut, or egg.

	For more information see [[eggshell\|eggshell]], [[seashell\|seashell]], [[oyster%20shell\|oyster shell]], [[tortoiseshell\|tortoiseshell]], and [[walnut%~~20gshell~~\|walnut shell]].		For more information see [[eggshell\|eggshell]], [[seashell\|seashell]], [[oyster%20shell\|oyster shell]], [[tortoiseshell\|tortoiseshell]], and [[walnut%20shell\|walnut shell]].

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

MDerrick at 20:44, 30 May 2022

2022-05-30T20:44:57Z

← Older revision		Revision as of 15:44, 30 May 2022
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	[[File:1988.1214-SC33903.jpg\|thumb\|]]		[[File:1988.1214-SC33903.jpg\|thumb\|<br>MFA# 1988.1214]]
	== Description ==		== Description ==
			[[File:1994.420-SC1902.jpg\|thumb\|<br>MFA# 1994.420]
	The hard outer covering or case of an animal, mollusk, insect, nut, or egg.		The hard outer covering or case of an animal, mollusk, insect, nut, or egg.

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	shells; seashell; tortoiseshell; eggshell; coquille (Fr.)		shells; seashell; tortoiseshell; eggshell; coquille (Fr.)

	== ~~Additional Images ==~~		==Resources and Citations==

	~~<gallery>~~
	~~File:1994.420-SC1902.jpg\|~~
	~~</gallery>~~


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

	* Oppi Untracht, ''Jewelry Concepts and Technology'', Doubleday & Co., Inc., New York City, 1985		* Oppi Untracht, ''Jewelry Concepts and Technology'', Doubleday & Co., Inc., New York City, 1985
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	* A.Lucas, J.R.Harris, ''Ancient Egyptian Materials and Industries'', Edward Arnold Publishers Ltd., London, 4th edition, 1962		* A.Lucas, J.R.Harris, ''Ancient Egyptian Materials and Industries'', Edward Arnold Publishers Ltd., London, 4th edition, 1962

	* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000		* Art and Architecture Thesaurus Online, http ://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000



	[[Category:Materials database]]		[[Category:Materials database]]

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

2016-05-10T17:11:27Z

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

← Older revision		Revision as of 12:11, 10 May 2016
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	The hard outer covering or case of an animal, mollusk, insect, nut, or egg.		The hard outer covering or case of an animal, mollusk, insect, nut, or egg.

	For more information see [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~eggshell eggshell], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~seashell seashell], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~oyster%20shell oyster shell], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~tortoiseshell tortoiseshell], and [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~walnut%20gshell walnut shell].		For more information see [[eggshell\|eggshell]], [[seashell\|seashell]], [[oyster%20shell\|oyster shell]], [[tortoiseshell\|tortoiseshell]], and [[walnut%20gshell\|walnut shell]].

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

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

2016-05-01T23:21:54Z

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

← Older revision		Revision as of 18:21, 1 May 2016
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	== ~~Authority~~ ==		== Sources Checked for Data in Record ==

	* Oppi Untracht, ''Jewelry Concepts and Technology'', Doubleday & Co., Inc., New York City, 1985		* Oppi Untracht, ''Jewelry Concepts and Technology'', Doubleday & Co., Inc., New York City, 1985