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23 · Colour technology · Hybrid material

Blue that does not yield

Indigo and clay united by heat

Maya blue combines plant indigo and clay to obtain a very resistant pigment.

Museum documentation · free public access, no account required.

PHOTOGRAPH OF THE ORIGINAL · The Metropolitan Museum of Art · CC0 1.0

Documentary original · Exact correspondence

Institutional photograph of the original crocodile rattle, Met 1979.206.1143, disseminated by The Metropolitan Museum of Art under CC0. Attribution to Maya artists corresponds to the manufacture of the piece, not to the authorship of the photograph.

The Metropolitan Museum of Art · The Metropolitan Museum of Art · Inventory: 1979.206.1143 · CC0 1.0

Maya crocodile rattle from Jaina/Campeche, 700–800 CE; ceramic with Maya blue pigment.
PHOTOGRAPH OF THE ORIGINAL · The Metropolitan Museum of Art · CC0 1.0

Documentary original · Exact correspondence

Institutional photograph of the original crocodile rattle, Met 1979.206.1143, disseminated by The Metropolitan Museum of Art under CC0. Attribution to Maya artists corresponds to the manufacture of the piece, not to the authorship of the photograph.

The Metropolitan Museum of Art · The Metropolitan Museum of Art · Inventory: 1979.206.1143 · CC0 1.0

History and context

The so-called Maya blue combines organic indigo with palygorskite, a fibrous clay. Heating the mixture favours a pigment resistant to moisture, acids and degradation, capable of surviving in murals, ceramics and offerings.

Experiments and analysis have linked some preparations to the heat of burning incense, a possible link between manufacture and ritual. This proposal explains certain contexts, not a single recipe applied uniformly across centuries and regions.

Heat favours indigo stabilising in the fibrous structure of palygorskite, the origin of Maya blue's resistance to moisture and chemical agents. The recipe unites mineral and organic knowledge.

Geological sources and experiments allow reconstruction of materials, but not a single workshop for fifteen centuries. Production during copal burning explains some ritual contexts and must remain a partial hypothesis.

Evidence and interpretation

Documented fact: Material analysis identifies indigo and palygorskite in Maya blue, and heating stabilises the compound. Interpretation and caution: Production during copal combustion is an experimentally supported hypothesis for some contexts; workshops, proportions and meanings varied.

Catalogue facts

Narrative date
Documented use from the Classic, c. 300–1500 CE
Location
Maya lowlands, especially the Yucatán Peninsula
Material
Indigo · palygorskite · heat · possible copal
Context
Artisanal chemistry, painting and ritual practice
Curatorial reading
The documented fact and its interpretation appear separately in the evidence block.
Date
Documented use from the Classic, c. 300–1500 CE
Location
Maya lowlands, especially the Yucatán Peninsula
Support
Indigo · palygorskite · heat · possible copal
Documentary coverage
3 museum, heritage, primary corpus or research sources for this stop.

A SHARED TOPIC, DIFFERENT MOMENTS

Objects connected through time

Follow a topic across the collections. A shared tag is a way to compare objects, not proof that one culture influenced another.

The order uses the midpoint of each approximate date range; ranges can overlap. Spacing does not represent elapsed time. Swipe, scroll or use the arrows. With the sequence focused, use ← / →, Home or End.

THE CURRENT OBJECT

Its date is not sufficiently established to place it on the timeline. We keep it here, separate from the dated objects.

Pigments14 dated objects

1 / 14In the centre: Engraved ochre from Blombos

Also connected, without a comparable date (8)

These objects are not placed after the others: an unknown date does not mean a more recent object.

  • BhimbetkaPrehistory · Mesolithic–historical and medieval period
  • Eland CavePrehistory · Regional tradition of ≈4,000 years · up to historical period
  • Game Pass ShelterSan histories · Regional rock art chronology · panel not dated in isolation
  • KakaduPrehistory · Regional corpus ≈20,000 BP–contemporary era
  • Leang KarampuangPrehistory · Minimum 51,200 years · dating published in 2024
  • Quinkan CountryPrehistory · Regional art up to ≈27,000 BP · modern continuity
  • Sierra de San FranciscoPrehistory · Broad tradition with direct dates ≈5290–295 BP
  • Tassili n’AjjerPrehistory · Corpus ≈6000 BCE–first centuries CE

A closer look

About 1 min to read · 1 section. Further reading and sources · free access. Editorial review recorded: .

The mines and the knowledge of communities

A study published in 2012 compared the composition of palygorskite from deposits known to contemporary Maya communities with samples of blue from Chichén Itzá and Palenque. The match in most samples provided direct evidence that some sources used today already supplied pre-Hispanic production. The result relates laboratory analysis and indigenous knowledge of the territory, rather than presenting the pigment as a mysterious lost formula. The documented continuity refers to concrete mineral sources and mining knowledge; it does not demonstrate that all ancient workshops shared identical materials or procedures.

Location and territory

Physical world map with routes of human evolutionPresent-day world coastline from Natural Earth in an equirectangular projection. The overlaid markers let you explore each milestone.Map base: Natural Earth 1:110m · public domain · present-day reference coastline

REGIONAL AREA

Maya lowlands, especially the Yucatán PeninsulaGulf Olmec coast and Maya lands brought together in a museum; contact does not equal lineal descent. The footprint marks the orienting centre of the scope, not a boundary nor an exact point.

Sources and references

Expand this information and consult its sources

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