Maya Blue

This figurine is partly painted with Maya blue. It was made in the
600s AD to 700s AD. It may represent a being that you may see
called the "Fat Man." (This figure seems to have been in part of
Mesoamerican cultures, and was connected, it seems, music as well
as comedy.) From The Metropolitan Museum of Art.

Used by the ancient -- and Colonial Period -- Maya (and other Mesoamericans), Maya blue is a pigment that is noticeably resistant to deterioration. After numerous studies (beginning in the early 1900s), it is now thought that at least two things went into its making: indigo dye and a kind of clay, either sepiolite or palygorskite. This article will focus on Maya blue's composition, production, resistance and its uses.

Historical Note

Maya blue has been found within the context of the Late Preclassic. However, it is in the Late Classic that increased usage of Maya blue began. During the beginning of the Late Classic, the use of Maya blue appears to have become common in the Usumacinta region, the Puuc region and Guatemala. The ancient Maya used the pigment through the Postclassic Period and even in the Colonial Period -- though its use declined and disappeared during the latter (around the end of the 1500s).

Color

Maya blue ranges in color from a light blue to green blue, and adjectives connected to its description include "vivid" and "radiant".  The color might be connected to iron as well as iron oxide nanoparticles, though it is also possible that it isn't -- an alternate theory being that it is the ratio of indigo dye to clay. Different shades may have been possible through different kinds of Maya blue recipes.

Indigo Dye

The genus Indigofera has species that can be used to produce indigo dye. The indigo dye the ancient Maya used could have come from different species, such as Indigofera suffruticosa (a shrub whose other names include Guatemala indigo, ti cafe, añil, wild indigo, añil de pasto or just indigo.

As for the way the ancient Maya made their dye -- that has yet to be discovered, and is therefore one of the lingering mysteries of Maya blue. For example, whether or not the dye was a liquid or reduced even further into chunks of dye (which would be ground up). 

The Clay -- Palygorskite or Sepiolite?

This is a rattle and whistle painted with Maya Blue that was
made in the 700s AD. From The Metropolitant Museum
of Art.

Of the resources thus far found in researching Maya blue, most tend to favor palygorskite as the clay that was used; (though some also include sepiolite in their definition. One book, Developments in Palygorskite-Sepiolite Research, states that sepiolite sometimes is found in Maya blue from the Aztec area.)

Also called attapulgite (an older name), palygorskite is defined by Encyclopedia Britannica Online as a fibrous magnesium aluminum silicate. It is a clay whose molecular structure is described as "fibrous", a kind of structure that has "channels" (or tunnels, as Handbook to Clay Science describes them). The "fibrous" structure, it is understood, is necessary for making Maya blue.

Production

It is now thought that it is not enough to mix indigo dye and palygorskite together -- the mixture has to be heated (Handbook says it must be 302 Fahrenheit), and for a couple of days.  As evidence, dehydroindigo (oxidized indigo dye) has been found in Maya blue, which may have formed when heated. Also, a blue color was only obtained, in studies I have found on creating Maya blue, when something else was added (such as acetone or diluted hydrochloric acid), so it is possible the ancient Maya had an acid or acids they could use.

How does the indigo dye bind to the clay?  It is thought that the dye is caught in the channels (or tunnels) of the palygorskite, perhaps at the ends of these channels. 

Resistance

A word connected to Maya blue is "stable". It is resistant to many things. For example, The Field Museum's Dr. Gary Feinman states that, "Maya blue is a very stable pigment. In other words, it does not rub of or wash off very easily." (Author's transcription.)

But Maya blue can resist more than rubbing and washing. Published in 2009, Electrochemical Methods in Archaeometry, Conservation and Restoration gives a list of things Maya blue can withstand. The book states that Maya blue is resistant to "...acids, alkalis, oxidants, reducing agents, organic solvents or biodegration."

How long can Maya blue resist attack? A study conducted by Rutherford J. Gettens involved putting samples of Maya blue from an incense burner in various liquids, including concentrated hydrochloric acid, concentrated sulfuric acid and concentrated nitric acid. After eighteen hours had passed the samples were still the same color.

Uses

The ancient Maya used Maya blue artistically for their murals, such as the murals at Bonampak, and figurines, such as those found on Jaina Island. Maya blue was also used as part of the color palette in codices. Also, it seems, they used it when preparing people and inanimate objects off as sacrifices.

What was the connection between Maya blue and making sacrifices? The understanding is that votives were covered with the pigment before they were sacrificed. As evidence, at the bottom of the Sacred Cenote, a layer of blue silt was found while it was being dredged. Dr. Feinman states that coating objects (and people) in Maya blue was an act used when making sacrifices to rain deities.

Consideration: Copal, A Potential Ingredient

A theory also exists that Maya blue was made by using burning copal resin to bind the indigo and palygorskite. According to Developments, it is yet to be seen whether or not Maya blue could be created by adding palygorskite-indigo dye mix to melted copal -- which melts below 302 degrees Fahrenheit.

References: 

"Handbook of Clay Science"; F. Bergaya, B.K.G. Theng, G. Lagaly; 2011

"Pigment Compendium: A Dictionary of Historical Pigments"; Nicholas Eastaugh, Valentine Walsh, Tracey Chaplin, Ruth Siddall; 2012

"Developments in Palygorskite-Sepiolite Research: A New Outlook on these Nanomaterials"; Elsevier; 2011

"The Archaeology of Science: Studying the Creation of Useful Knowledge"; Springer; 2013

"Electrochemical Methods in Archaeometry, Conservation and Restoration"; Antonio Doménech-Carbó, María Teresa Doménech-Carbó, Virginia Cost; 2009

"Analytical Archaeometry: Selected Topics"; Howell Edwards, Peter Vandenabeele; 2012

USDA Forest Service: International Institute of Tropical Forestry: Indigofera suffruticosa P. Mill.

The Field Museum: Science at FMNH : Ep. 42 – The Production of Maya Blue

The Field Museum: Dr. Gary Feinman

The Metropolitan Museum of Art: Crocodile Rattle

The Metropolitan Museum of Art: Costumed Figure

Image Credits:

The Metropolitan Museum of Art: Costumed Figure

The Metropolitan Museum of Art: Crocodile Rattle

Periods of Ancient Maya History

Author's note: My resources do not always corroborate on dates and facts of these periods. To keep down a potential ideological issue, I have stuck with each resource's use of BC and AD or BCE and CE when referencing their dates. Updates will undoubtedly be necessary as time goes on. Also, I plan to expand each of the periods to have their own post.

In the course of studying the ancient Maya, archaeologists have formed a classification of different periods of change and/or development. Among the most resources, these periods are the Paleo-Indian (Lithic) Period, Archaic Period, Preclassic (Formative) Period, Classic Period and Postclassic Period, with some of these periods having sub-periods. This post touches on highlights of each period.

Paleoindian Period
People crossing from the Old World to the New World is a major feature of the Paleoindian period, which is sometimes called the Lithic Period. It is currently thought that the migrants lived in nomadic groups, traveling and hunting large animals such as the wild horses of the time as well as mammoths. Different theories exist as to how people got to the New World: one involves people crossing the Bering Strait on a land bridge, while another thinks it's possible the travelers used boats.

The dates of the Paleoindian Period according to Dr. Kuang Yu Chen, started around 20,000 BC and ended around 8000 BC. Handbook To Life In The Ancient Maya World states the period started about 12,000 BCE and ended around 7000 BCE.

Archaic Period
Due to a change in climate that had been occurring -- the ice was melting --, and over-hunting of large animals, ancient peoples began to change their lifestyle. People began to hunt smaller animals and work more on their agricultural skills -- including the domestication of such things as corn, tomatoes and chilies. Completely sedentary villages began to occur in this period along with the arts of weaving and pottery.

Society changed as well in the Archaic Period. Around 1400 BC a culture currently called the Isthmian culture was in place from the Gulf Coast area in modern day Veracruz to the Pacific coast area that became part of the ancient Maya world.

According to Dr. Kuang Yu Chen the Archaic Period started around 8000 BC and ended in 2000 BC. According to Handbook, the Archaic Period started around 7000 BCE and ended around 1200 BCE.

Preclassic Period
Also known as the Formative Period, the Preclassic Period is a period that archaeologists have split into the Early Preclassic, Middle Preclassic and Late Preclassic. In the Early Preclassic, the Olmec civilization developed out of the Isthmian culture.

In the Middle Preclassic the Olmec civilization continued to flourish and then decline. Meanwhile, the Maya civilization developed to be notably distinct.

In the Late Preclassic, -- in the southern and central lowlands -- the ancient Maya society pyramid started to develop, and communities whose center were ceremonial structures began. The late Preclassic was also the time when the ancient Maya adopted the Zapotec writing system. Also in the Late Preclassic, the population increases to its maximum in both the communities of the Guatemalan highlands and in Pacific coast communities.

Dr. Kuang Yu Chen states that the Preclassic Period (which he calls the Formative Period) started around 2000 BC and ended around 250 AD. Handbook states the period started around 1200 BCE and ended around 250 AD. Handbook further elaborates, saying the Early Preclassic began around 1200 BCE and ended around 1000 BCE, the Middle Preclassic began around 1000 BCE and ended around 300 BCE, and the Late Preclassic began around 300 BCE and ended around 250 CE. A page -- on a section of Wesleyan University's website titled Unaahil B'aak The Temples of Palenque -- states however, that the Early Preclassic began around 2500 BCE and ended 1000 BCE, the Middle Preclassic began around 1000 BCE and ended 400 BCE and the Late Preclassic started around 400 BCE and ended around 200 CE.

Classic Period
Though sometimes described as a golden age of the ancient Maya civilization, other sources say the Classic Period was a time where the ancient Maya were both building as well as setting up stelae -- with others saying it was when they used the Long Count in their monuments. The Classic Period has two sub-divisions, the Early Classic and the Late Classic. The split between the Early and Late Classic is because of political turmoil that happened around 600 AD, as well as artistic changes that occurred around that time.

In the Early Classic Period, cities located along the Pacific coast decline. In the Late Classic the population increases in the southern and central lowlands, more and more cities are built in the southern lowlands and warfare increases.

Kuan Yu Chen states the Classic Period began around 250 AD and ended around 900 AD. Handbook states that this period began around 250 CE and ended around 900 CE. Handbook also states that the Early Classic started around 250 CE and ended around 600 CE, the Late Classic started around 600 and ended in 900. The Wesleyan University page states the Early Classic started around 200 CE and ended 600 CE, but does agree with Handbook as to the dates of the Late Classic.

Terminal Classic Period
In the time of transition known as the Terminal Classic Period -- which is, generally speaking, the last century of the Classic Period -- the cities in the Petén region decline, and at the same time something Handbook calls "pan-Mesoamerican culture" becomes dominant in the Yucatan Peninsula. Also during the Terminal Classic, monuments no longer use the Long Count.

Handbook  states the Terminal Classic is both part of the Classic and Postclassic Period. According to this book, it started around 800 CE and ended around 1000 CE. A study published August 24, 2012 titled "Classic Period collapse of the Central Maya Lowlands: Insights about human–environment relationships for sustainability" agrees with Handbook on the dates for the Terminal Classic.

Postclassic Period
The Postclassic Period is divided into the Early Postclassic and the Late Postclassic.  The Early Postclassic society was not as centered on the conquests of rulers as the Classic Period culture had been, and large systems of trade between cities existed in the northern lowlands.

In the Late Postclassic, cities began to be built to be fortified, public monuments became less common and the Aztec Empire started to influence the Maya word -- even taking tribute from places in the highlands of Guatemala.


Dr. Kuang Yu Chen states this period lasted from around 900 AD until 1521 and Handbook agrees with him. According to the page on Wesleyan University's website, the Postclassic Period is split into the Early Postclassic (which lasted from around 900 CE to 1200 CE) and the Late Postclassic (which lasted from 1200 CE until 1492 CE)


References:

"Handbook To Life In The Ancient Maya World"; Lynn V. Foster; 2005

The Freedictionary: Olmec

"The Ancient Maya"; Robert J. Sharer, Loa P. Traxler; 2006

"The Ancient Maya: New Perspectives"; Heather Irene McKillop; 2004 

Rutgers School of Arts and Sciences: Department of Chemistry & Chemical Biology: Lecture 7 Hieroglyphic Maya Writing; Kuang Yu Chen, Ph.D; 2/19/2003

Free Online Encyclopedia: Pre-Columbian Art and Architecture

Stanford University: Ancient History

NCBI: "Classic Period collapse of the Central Maya Lowlands: Insights about human-environment relationships for sustainability"; B.L. Turner, Jeremy A. Sabloff; August 24, 2012