nyuuzyou/wikis huggingface dataset:
Mastic adhesive

== Description ==
The name mastic has generically been used for strong paste-like adhesives. Some mixtures are as follows: 
1) Oil-mastic is a workable plaster that is used as a waterproof mortar and cement. As early as the 16th century, a cement called mastic was composed of lime and sand combined with litharge and linseed oil. This quick-drying oil-based mastic was used to set tesserae on mosaics (Mayer 1969). 
2) Asphalt-mastic is a durable, weatherproof cement made from sand, or limestone mixed with asphalt and tar. Natural rubber, SBR, or PVC is added as a tackifier. This black, weather resistant cement is used in highway construction, roofing and roll type floor coverings. 
3) Synthetic resin-mastic is a plastic puttylike mixture that is used as a sealant and adhesive. Currently most mastic cements are used for installing windows as well as for laying floor and wall tiles.
== Synonyms and Related Terms ==
adhesivo de almáciga (Esp.); mastic adhésif (Fr.); mastice (It); mastic cement; mastic sealant; asphalt mastic; asphaltic mastic; tile mastic
==Resources and Citations==
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* Irving Skeist, Handbook of Adhesives, Van Nostrand Reinhold Company, New York, 1977
Category:Materials database
Mastic varnish

== Description ==
A varnish made from 
mastic resin dissolved in 
turpentine. It was a popular clear, glossy varnish for oil paintings in the 19th century. However, because of it tends to bloom in moist environments and crack with age, it has mostly been displaced by 
dammar varnishes.
== Synonyms and Related Terms ==
barniz de almáciga (Esp.)
==Resources and Citations==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
Category:Materials database
Masticot

== Description ==
Archaic name commonly used for yellow lead pigments (Schur 1985). It probably refers to massicot (yellow lead monoxide), but may also refer to lead-tin yellow.
== Synonyms and Related Terms ==
massicot (Fr.); lead monoxide; lead tin yellow
==Resources and Citations==
* Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
Category:Materials database
Mat board

== Description ==
A stiff paperboard, such as cardboard, that is placed under or over a drawing, painting, or photograph to serve as a frame or provide a border between the picture and the frame. Mat boards are available in a variety of colors and surface finishes.  Some are laminated with decorative paper or foil.  Most mat boards are made from wood pulp, but archival quality rag boards are also available. Newer versions are made from polymers, such as polyethylene, that provide a rigid colored board.
== Synonyms and Related Terms ==
mat; matboard; paperboard
== Applications ==
== Collection Risks ==
PIG (polyethylene) Matboard Safety Data Sheet: [link]
== Resources or Citations ==
* Rachael Perkins Arenstein, Lisa Goldberg, and Eugenie Milroy, ‘Support and Rehousing for Collection Storage’ In ‘Preventive Conservation: Collection Storage’ Lisa Elkin and Christopher A. Norris (eds.), Society for the Preservation of Natural History Collections, New York. 2019. 
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* The Dictionary of Paper, American Paper Institute, New York, Fourth Edition, 1980
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Matami/Inugusu/Tabu no ki - center (95 C)

[[[SliderGallery rightalign|Uemura_05-29-2009_095.jpg~Normal]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 95
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 2nd shelf
|-	
! scope="row"|Sample location
| center (95 C)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| brown (orangish)
|-	
! scope="row"|Dyestuff (Japanese common name)
| またみ/いぬぐす/たぶの木 : Matami/Inugusu/Tabu no ki
|-	
! scope="row"|Dyestuff (botanical name)
| Machilus thunbergii Siebold et Zucc.
|-	
! scope="row"|Plant part
| bark /dried (?)
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| -
|-	
! scope="row"|Other auxiliary agent
| ash water
|-	
! scope="row"|Uemura's notes
| The fabric was soaked in a bath containing the dye extract and ash water; and then dried. This process was repeated for more than ten times. After the final drying, the fabric was soaked into ash water, dried, and then rinsed with water. This technique is used for dyeing a brown of those textiles made in Hachijy island (), Japan. Their stripe pattern, called "Kihachijy ()" consists of this brown and a yellow dyed with Arthraxon hispidus (Thunb.) Makino, so-called "Kobuna-gusa /Hachijy-Kariyasu".
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Matami - left (96 L)

[[[SliderGallery rightalign|Uemura_05-29-2009_096.jpg~Normal]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 96
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 2nd shelf
|-	
! scope="row"|Sample location
| left (96 L)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| brown (orangish)
|-	
! scope="row"|Dyestuff (Japanese common name)
| またみ : Matami
|-	
! scope="row"|Plant part
| unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| lime water
|-	
! scope="row"|Other auxiliary agent
| -
|-	
! scope="row"|Uemura's notes
| The color tone of the brown found on the Tobi-hachijy textile () is between those achieved by mordanting with ash water and by mordanting with iron.
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Matami - right (96 R)

[[[SliderGallery rightalign|Uemura_05-29-2009_096.jpg~Normal]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 96
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 2nd shelf
|-	
! scope="row"|Sample location
| right (96 R)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| dark brown
|-	
! scope="row"|Dyestuff (Japanese common name)
| またみ : Matami
|-	
! scope="row"|Dyestuff (botanical name)
| Array
|-	
! scope="row"|Plant part
| unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| iron
|-	
! scope="row"|Other auxiliary agent
| ash water
|-	
! scope="row"|Uemura's notes
| The color tone of the brown found on the Tobi-hachijy textile () is between those achieved by mordanting with ash water and by mordanting with iron.
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Matatabi (Silver vine) - left (370 L)

[[[SliderGallery rightalign|Uemura_10-08-2009_370.jpg~Normal]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 370
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 5th shelf
|-	
! scope="row"|Sample location
| left (370 L)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| light ochre
|-	
! scope="row"|Dyestuff (Japanese common name)
| マタタビ : Matatabi
|-	
! scope="row"|Dyestuff (English common name)
| Silver vine
|-	
! scope="row"|Dyestuff (botanical name)
| Actinidia polygama (Siebold et Zucc.) Planch. Ex Maxim.
|-	
! scope="row"|Plant part
| fruit / unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| iron
|-	
! scope="row"|Other auxiliary agent
| -
|-	
! scope="row"|Uemura's notes
| The resultant colors were unsatisfactory.
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Matatabi (Silver vine) - right (370 R)

[[[SliderGallery rightalign|Uemura_10-08-2009_370.jpg~Normal]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 370
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 5th shelf
|-	
! scope="row"|Sample location
| right (370 R)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| white
|-	
! scope="row"|Dyestuff (Japanese common name)
| マタタビ : Matatabi
|-	
! scope="row"|Dyestuff (English common name)
| Silver vine
|-	
! scope="row"|Dyestuff (botanical name)
| Actinidia polygama (Siebold et Zucc.) Planch. Ex Maxim.
|-	
! scope="row"|Plant part
| fruit / unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| lime
|-	
! scope="row"|Other auxiliary agent
| -
|-	
! scope="row"|Uemura's notes
| The resultant colors were unsatisfactory.
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Match wax

== Description ==
A low-melting fraction of paraffin wax that has a melting point of 36 - 45C (105-112F). Match wax is primarily used to make match heads and fireplace starter blocks. It has also been used in wax lamps.
== Risks ==
Combustible.
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 581
Category:Materials database
Matelassé

== Description ==
A soft, thick, embossed fabric that has a puckered or quilted appearance. Matelassé is usually woven on a dobby or Jacquard loom and is used for blankets, bedcovers, drapery, and upholstery.
== Synonyms and Related Terms ==
matelass; matelasse (Ned); metalasse (sp); quilted weave
== Sources Checked for Data in Record ==
* Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
* Fairchild's Dictionary of Textiles, Phyllis G.Tortora, Robert S. Merkel (eds.), Fairchild Publications, New York City, 7th edition, 1996
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
* Website: www.fabrics.net
Category:Materials database
Matsuyoigusa /Tsukimisou (Primrose) - left (223 L)

[[[SliderGallery rightalign|Uemura_07-23-2009_223.jpg~Normal|Uemura_07-23-2009_223_UV.jpg~UV]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 223
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 3rd shelf
|-	
! scope="row"|Sample location
| left (223 L)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| dark brown (slightly greenish)
|-	
! scope="row"|Dyestuff (Japanese common name)
| マツヨヒグサ : Matsuyoigusa /Tsukimisou
|-	
! scope="row"|Dyestuff (English common name)
| Primrose
|-	
! scope="row"|Dyestuff (botanical name)
| Oenothera stricta Ledeb. ex Link
|-	
! scope="row"|Plant part
| flower /fresh
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| iron
|-	
! scope="row"|Other auxiliary agent
| -
|-	
! scope="row"|Uemura's notes
| The resultant color would be same when using the dried flowers as dyestuff. According to Mr. Shoichi Gotoh (), the flower was used for dyeing blue black in Tokushima region, Japan. The plant is sometimes also called as Tsukimis ().
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Matsuyoigusa /Tsukimisou (Primrose) - left (224 L)

[[[SliderGallery rightalign|Uemura_07-23-2009_224.jpg~Normal]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 224
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 3rd shelf
|-	
! scope="row"|Sample location
| left (224 L)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| dark brown (slightly greenish)
|-	
! scope="row"|Dyestuff (Japanese common name)
| マツヨヒグサ : Matsuyoigusa /Tsukimisou
|-	
! scope="row"|Dyestuff (English common name)
| Primrose
|-	
! scope="row"|Dyestuff (botanical name)
| Oenothera stricta Ledeb. ex Link
|-	
! scope="row"|Plant part
| leaf & stem / dried (?)
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| iron
|-	
! scope="row"|Other auxiliary agent
| -
|-	
! scope="row"|Uemura's notes
| The actual use of this plant as dyestuff was unknown. The dye plant was collected by Mr. Shoichi Gotoh (). Use of alum as mordant did not produce any color.
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Matsuyoigusa /Tsukimisou (Primrose) - right (223 R)

[[[SliderGallery rightalign|Uemura_07-23-2009_223.jpg~Normal|Uemura_07-23-2009_223_UV.jpg~UV]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 223
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 3rd shelf
|-	
! scope="row"|Sample location
| right (223 R)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| light lemon yellow
|-	
! scope="row"|Dyestuff (Japanese common name)
| マツヨヒグサ : Matsuyoigusa /Tsukimisou
|-	
! scope="row"|Dyestuff (English common name)
| Primrose
|-	
! scope="row"|Dyestuff (botanical name)
| Oenothera stricta Ledeb. ex Link
|-	
! scope="row"|Plant part
| flower /fresh
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| lime water
|-	
! scope="row"|Other auxiliary agent
| -
|-	
! scope="row"|Uemura's notes
| The resultant color would be same when using the dried flowers as dyestuff. According to Mr. Shoichi Gotoh (), the flower was used for dyeing blue black in Tokushima region, Japan. The plant is sometimes also called as Tsukimis ().
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Matsuyoigusa /Tsukimisou (Primrose) - right (224 R)

[[[SliderGallery rightalign|Uemura_07-23-2009_224.jpg~Normal]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 224
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 3rd shelf
|-	
! scope="row"|Sample location
| right (224 R)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| pale beige
|-	
! scope="row"|Dyestuff (Japanese common name)
| マツヨヒグサ : Matsuyoigusa /Tsukimisou
|-	
! scope="row"|Dyestuff (English common name)
| Primrose
|-	
! scope="row"|Dyestuff (botanical name)
| Oenothera stricta Ledeb. ex Link
|-	
! scope="row"|Plant part
| leaf & stem / dried (?)
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| lime water
|-	
! scope="row"|Other auxiliary agent
| -
|-	
! scope="row"|Uemura's notes
| The actual use of this plant as dyestuff was unknown. The dye plant was collected by Mr. Shoichi Gotoh (). Use of alum as mordant did not produce any color.
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Matte

== Description ==
A dull, nonglossy surface. Matte surfaces have microscopic irregularities that scatter, or diffusely reflect, light in all directions. This is the opposite of glossy surfaces that produce mirror-like images. Matte surfaces may occur or be made on any type of material such as paint, paper, metal, photographs and fabrics.
== Synonyms and Related Terms ==
non-preferred spellings: mat; matt
Category:Materials database
Matte glaze

== Description ==
A ceramic glaze with a dull, nonglossy finish. Most slip glazes produce an opaque, matte finish. Matte glazes may sometimes be induced by with additions of barium sulfate or alumina. Matte glazes are used on architectural terracotta.
== Synonyms and Related Terms ==
dull glaze; mat glaze (Br.); mat glazuur (Ned.); vidrado mate (Port.); matt glaze; non-lustrous glaze
==Resources and Citations==
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Matte varnish

== Description ==
Any varnish that gives a flat, non-shiny, final appearance. As most varnishes are glossy, flatting agents, such as beeswax, fumed silica, diatomaceous earth and heavy-metal soaps, are added to minimize reflections. 
See also flatting agent.
== Synonyms and Related Terms ==
flat varnish (AAT preferred); flatting varnish
==Resources and Citations==
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Matura diamond

== Description ==
An imitation diamond gemstone that is composed of clear zircon crystals. Matura diamonds are sometimes made from yellow zircon crystals that have been heat-treated to make them colorless. It is not the same as the synthetic cubic zirconia.
== Synonyms and Related Terms ==
Matara diamond; cubic zirconia
== Comparisons ==
==Resources and Citations==
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* Wikipedia: http://en.wikipedia.org/wiki/Matura_Diamond (Accessed Mar. 1, 2006)
Category:Materials database
Mauve

== Description ==
The first synthetic basic dye. The pale purple color was patented in August 1856 by William Perkin, a Scottish chemist. Mauve is an aniline based dye that is composed of amino-phenylamino-p-tolyl ditolazonium sulfate. It was synthesized from coal-tar when Perkin treated aniline with sulfuric acid and potassium dichromate. Mauve is not lightfast and but is still occasionally used in some watercolor paints.
== Synonyms and Related Terms ==
aniline violet; CI 50245; mauveine; Malven (Deut.); mauve (Fr., Ned.); mauvéïne (Fr.); pourpre d'aniline (Fr.); violetto anilina (It.); malva (Port.); Perkin's violet; Perkin's purple; aniline purple
[[[SliderGallery rightalign|Mauve (bottle 495) Weber 1942.TIF~FTIR (MFA)|f495sem.jpg~SEM|f495edsbw.jpg~EDS|Slide10 F495.PNG~XRF]]]
== Physical and Chemical Properties ==
* Composition = C27H25N4(SO4)1/2
==Additional Images==
 
File:495 mauve.jpg|thumb|Mauve
File:mauve C100x.jpg|thumb|Mauve
== Resources and Citations ==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* Reed Kay, The Painter's Guide To Studio Methods and Materials, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1983
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Rosalie Rosso King, Textile Identification, Conservation, and Preservation, Noyes Publications, Park Ridge, NJ, 1985
* F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876
* A.Scharff, 'Synthetic dyestuffs for textiles and their fastness to washing', ICOM-CC Preprints Lyon, Getty Conservation Institute, Los Angeles, 1999
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Mauveine

== Description ==
A gray-violet dye that is the base of mauve.
[[[SliderGallery rightalign|Mauveine acetate.PNG~FTIR (MFA)]]]
== Synonyms and Related Terms ==
CI 50245
== Physical and Chemical Properties ==
Slightly soluble in ethanol, methanol. Insoluble in benzene.
Composition	C26H24N4
Category:Materials database
Maya blue

== Description ==
An greenish-blue pigment used from 8th Century CE to the 16th Century in Central and South America the Mayans, Toltecs, Mixtecs and Aztecs for wall paintings, decorating ceramics, and on textile and documents. After many years of study, it was determined in 1967 that Maya blue is composed of indigo absorbed on a clay substrate (Kleber et al., 1967). Palygorskite (attapulgite), montmorillonite and sepiolite clays were used (Torres 1988). Identiﬁcation using Raman Spectroscopy is straightforward as the clay-dye complex produces double peaks, speciﬁcally at 1578–1595 cm-1.
== Synonyms and Related Terms ==
Mayan blue (sp); bleu maya (Fr.); Mayablau (Deut.); azul maya (Esp.); azul de Maya (Esp., Mex.); mple ton Magia (Gr.); blu Maya (It.); Maya blauw (Ned.); azul Maia (Port.) 
Possible synonyms: Canutillow blue; Tekax blue; texotli (Mex.)
[[[SliderGallery rightalign|mayablue531.jpg~Raman]]]
==Risks ==
No significant hazards.
== Physical and Chemical Properties ==
* Fibrous or platy particles are pleochroic (turquoise blue to yellow-green). 
* Weak birefringence under crossed polars. 
* Unaffected by alkalies. Soluble in hot concentrated acids. 
* Refractive Index = 1.522-1.548
== Comparisons ==
== Resources and Citations ==
* Ruth Siddall, 'Mineral Pigments in Archaeology: Their Analysis and the Range of Available Materials' Minerals Vol 8, p. 201 (2018). Link
* R.Kleber, L.Masschelein-Kleiner, J.Thissen, "Etude et Identification du Bleu Maya" Studies in Conservation, 33: p.41-56, 1967. 
* L.Torres, "Maya Blue: How the Mayas Could have Made the Pigment" Materials Research Society Symposium Proceedings, 123: p. 123-129, 1988.
* Nicholas Eastaugh, Valentine Walsh, Tracey Chaplin, Ruth Siddall, Pigment Compendium, Elsevier Butterworth-Heinemann, Oxford, 2004
* Artists' Pigments: A Handbook of their History and Characteristics, Elisabeth West FitzHugh, Oxford University Press, Oxford, Vol. 3, 1997 Comment: H.Schweppe, "Indigo and Woad"
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Maya cement

== Description ==
A plaster that is prepared by mixing lime, zaccab (a white clay) and water. Maya cement was used in the Yucatan peninsula for sculpture, building and plastering material.
== Synonyms and Related Terms ==
Mayan cement (sp)
==Resources and Citations==
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
Category:Materials database