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Mineral pigments at Huaca Tacaynamo (Chan Chan, Peru)

Pigmentos minerales en la Huaca Tacaynamo (Chan Chan, Perú)
Les pigments minéraux à la huaca Tacaynamo, Chan Chan, Pérou
William E. Brooks, Víctor Piminchumo, Héctor Suárez, John C. Jackson y John P. McGeehin
p. 441-450


Los análisis de difracción de rayos x en 5 muestras de pigmentos de un mural, recientemente excavado en el sitio arqueológico de Huaca Tacaynamo —una parte del complejo de Chan Chan en el norte del Perú—, muestran ciertos minerales relacionados con presencias metálicas que, como se sabe, han sido aprovechados por los antiguos habitantes de los Andes, también, como pigmentos. Estos minerales incluyen atacamita [Cu2Cl(OH3)] para el color verde; azurita [Cu3(CO3)2(OH)2] para el azul; calcita [CaCO3] para el blanco; cinabrio [HgS] para el rojo; y goetita [HFeO2] para el amarillo. La datación de los tejidos a partir de materiales vegetales de Tacaynamo con el 14C dio como resultado: AD 1412-1614. Sin embargo, la ocupación inicial del sitio y la pintura de los murales bien podría haber sido previas.

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1Mineral pigments used in ancient societies are of interest to archaeologists, art historians, chemists and geologists. Excavations in Egypt, Greece, Italy, Morocco, Peru and elsewhere show that mineral pigments or «earth colors» were used to decorate murals, ceramics, thrones, tiles and inlaid mosaics and as a preservative. Because of their stability, and in some cases, toxicity, mineral pigments have withstood biological activity, exposure, volcanic eruptions and weathering. Some mineral pigments were used with little preparation directly from their geological sources and these include realgar (AsS) for reddish-orange, iron oxides (Fe2O3) or cinnabar (HgS) for red, coal or manganese minerals (Mn) for black, and calcite (CaCO3) or kaolin [Al2Si2O5(OH)4] for white. Other pigments were more complex, such as Egyptian blue (blue frit) which was prepared by heating silica (SiO2), malachite [Cu2(CO3)(OH)2], and calcite (CaCO3) (Farnsworth, 1951: 73).

2In pre-contact Peru, the decorated murals at Huaca Tacaynamo and other well-known archaeological sites such as Chan Chan (Pillsbury, 1993: 369), Illimo (Schaedel, 1978: 27), La Mina (Scott et al., 1998: 177), Pachacamac (Petersen, 1970: 18), and Paracas (Petersen, 1970: 17) show that ancient Andeans exploited mineral occurrences for industrial use, as pigments, in addition to the more well-known use of copper, gold, silver, platinum, and mercury for artisanal metalwork. Muelle & Wells (1939: 27) correlated specific minerals to the colors that were produced and Bonavia (1985: 178) described the geologic occurrence of pigments, pigment production, storage, brush composition, painting techniques, and clays used as plaster. However, Bonavia (1985: 199) did not specify which minerals were used for the pigments and qualitative spectrographic analysis was used to indicate which elements were major, minor or trace components in the pigments. There was speculation that plant-based pigments similar to Maya blue, a plant-clay pigment that was used in pre-contact Central America, may have been used in Peru and Bonavia’s data established that only unspecified mineral pigments were used for mural paints in ancient Peru (Bonavia, 1985: 179).

3No information was found on the mineral or plant source of pigments used to decorate ancient Andean ceramics; however, petroleum seeps in southern Texas (USA) were exploited by the Karankawa and these seeps provided a reddish pigment for ceramic decoration (Ricklis, 1996: 101). Tar from northern Peru’s petroleum seeps (Stothert, 1994: 344), which was used as glue, may also have been similarly used to provide a source of petroleum for ceramic decoration. Black, though not used at Tacaynamo, may have also been sourced from coal (Bonavia, 1985: 179), which is abundant in northern Peru (Brooks et al., 2004).

1. Huaca Tacaynamo

4Huaca Tacaynamo and nearby Huaca El Dragón, which is only a few hundred meters away, are located on the periphery of the larger Chimu archaeological complex of Chan Chan (Jackson, 2004: 299). The site is near Km 552 of the Panamerican Highway in Trujillo, in northern Peru. Wooden figures recovered from the site suggest a religious or funerary purpose of the site. Tacaynamo is bordered by an outer mural that outlines a rectangular courtyard where there are two superposed platforms and a ramp. The mural has polychromatic decoration (Iriarte 1976: 27; Ravines, 1981: 20) from which dozens of fragments, distinctly different from those sampled at the main site of Chan Chan, were recovered (Piminchumo, 2004: 6). Tacaynamo may have been first occupied as early as the Middle Horizon (AD 600-AD 1000) (Navarro, 1991: 52) or, alternatively, during Early Chimu time (AD 1000-AD 1100) and sporadic occupation probably lasted into the Colonial period (Jackson, 2004: 304).

1. 1. Mineral pigments

5Five samples of mineral pigments from the recently excavated mural at Tacaynamo were analyzed by x-ray diffraction methods in order to identify the minerals. The palette of the Tacaynamo muralists included:

6 Green-Atacamite (fig.1) is a dark green, copper halide mineral [Cu2Cl(OH)3] that is vitreous and soft (hardness of 3-3.5). It is a common mineral in arid climates, especially where copper minerals are exposed to oxidation, and may be a useful field guide for minerals exploration. Petersen (1970: 6) lists more than 20 occurrences for atacamite.

Figure 1 – Atacamite x-ray diffraction pattern with quartz and feldspar

Figure 1 – Atacamite x-ray diffraction pattern with quartz and feldspar

7 Blue-Azurite (fig. 2) is a deep blue, copper carbonate mineral [Cu3(CO3)2(OH)2] that is vitreous, soft (hardness 3.5-4), and may be found in the alteration zones near porphyry copper deposits. Pliny describes a blue pigment that was used in medicine to give nourishment to the hair and azurite was identified on murals in China that date to the Ming dynasty (Rapp, 2002: 210). Petersen (1970: 4) only lists a few of the large number of copper occurrences in Peru (Ministry of Energy and Mines, 1999: 14) which would indicate that the mineral is widespread.

Figure 2 – Azurite x-ray diffraction pattern with quartz and minor atacamite

Figure 2 – Azurite x-ray diffraction pattern with quartz and minor atacamite

8 White-Calcite (fig. 3) is a very common calcium carbonate mineral [CaCO3] that may occur in veins associated with many types of mineral occurrences. Other sources of calcite include limestone, chalk, or mollusk shells (Rapp, 2002: 213). Typically, calcite is white, soft (hardness of 3), and could easily be prepared for pigment use. This mineral may also have been obtained from calcining seashells and was an integral part of coca use in the ancient Andes.

Figure 3 – Calcite x-ray diffraction pattern

Figure 3 – Calcite x-ray diffraction pattern

9 Red-Cinnabar (fig. 4) is a red mercury sulfide mineral [HgS] that may be associated with hot springs or shallow epithermal mineral deposits worldwide. Both for size and historical importance, the most well-known deposits include Almaden in Spain, Huancavelica in Peru, and Idrija in Slovenia. Cinnabar is soft (hardness of 2-2.5) and is the common ore mineral of mercury. A minimum of 20 cinnabar occurrences are known in Peru (Petersen, 1970: 18) and the occurrences at Huancavelica, one of the world’s largest and most well-known producers of mercury (Arana, 1901: 25; Yates et al., 1951: 1), are the most likely source of the cinnabar that was used in ancient Peru. There are cinnabar sources throughout the Andes and it is possible that sources in Ecuador, which are not as well known but are closer to northern Peru, also may have been exploited (Chacón, 1986: 25; Truhan et al., 2005: 201).

Figure 4 – Cinnabar x-ray diffraction pattern with quartz

Figure 4 – Cinnabar x-ray diffraction pattern with quartz

10In Peru, powdered cinnabar was used to decorate gold masks during the Formative Period (400-1000 B.C.) (De Lavalle, 1992: 36); as a mural pigment (Petersen, 1970: 16; Brooks et al., 2006); for sacrificial ceremonies (Petersen, 1970: 6); for warrior’s bodies; as a cosmetic for the elite Inca women (Brown, 2001: 470); and as a body paint for corpses (Shimada & Griffin, 2005: 83) and other funeral preparations (Maravelaki-Kalaitzaki & Kallithrakas-Kontos, 2003; J. Verano, anthropologist, oral commun., 2006).

11Mercury was used by the Moche (~100 B.C.-A.D. 750) in northern Peru to amalgamate placer gold (Larco Hoyle, 2001: 137) and for the production of artisanal goldcraft (Kaufmann Doig, 1978: 747). At Huancavelica, mercury was recovered from drainages and may have been retorted from cinnabar (Petersen, 1970). Whether or not the ancient Andeans retorted cinnabar for mercury is controversial; however, retorts have been found near the mines at Huancavelica (K. Brown, professor, Brigham Young University, written commun., May 9, 2003). Only 15 kilometers from the mines at Huancavelica is Atalla, an archaeological site which was an ancient cinnabar pigment production center (Burger & Matos, 2002: 11).

12As did the ancient Romans, the Inca recognized the health hazards of mercury and that exposure to mercury and cinnabar during mining and retorting would cause the ancient miners «to shake and lose their senses» and, consequently, the use of mercury by the Inca declined (Larco Hoyle, 2001: 135). Perhaps its toxicity was also understood in other parts of the ancient world where cinnabar was used as a preservative to keep fine silks intact (Srinivasan & Ranganathan, 2004). Powdered cinnabar is now known to be toxic (Sax, 1984, 1: 756).

13Danger, eroticism, life, nobility, or woman’s role in reproduction may be symbolized by and associated with red coloring. Yet, despite the availability of a variety of reds that included insect-derived cochineal, feathers, plant-derived bixa (or bija) from the Bixa orellana (Petersen, 1970: 6), and mineral-derived cinnabar, goethite, hematite, and jasper, ancient Peruvians apparently selectively used powdered cinnabar for funeral preparations (Shimada & Griffin, 2005: 83; J. Verano, anthropologist, oral commun., 2006). Cinnabar has also been found in funeral contexts in Greece and Spain (Maravelaki-Kalaitzaki & Kallithrakas-Kontos, 2003). Therefore, in the mortuary process in ancient Peru, cinnabar may have had, at the least, a dual role, first, as a preservative because of its toxicity and, second, the life-over-death or life-giving symbolism suggested by its blood-red color.

14Yellow-Goethite (fig. 5) is a hydrated iron oxide mineral [HFeO2] that was used for yellow-brown or yellow ochre. It is a very common mineral that may be yellow, brown, to black and has a hardness of 5-5.5 and also may be used as an ore of iron. In some mineral occurrences, iron may be released from the weathering of pyrite (FeS) which then becomes oxidized.

Figure 5 – Goethite x-ray diffraction pattern with quartz, feldspar, and illite

Figure 5 – Goethite x-ray diffraction pattern with quartz, feldspar, and illite

15The binder used for the pigments at Tacaynamo is unknown. Egg white, which is known to have been used as a binder in Europe, was available from nesting sea-birds on the nearby Guanapes Islands or from any of the other «guano» islands along the Peruvian coast (Brooks et al., 2004). Pre-contact artifacts found in the guano, which is up to 40 m thick, and scenes on ceramics show that the guano islands were exploited for the fertilizer and perhaps the sea-bird eggs were also collected. There is the possibility that domestic fowl may also have provided another source of egg white (K. Bruhns, professor, written commun., 2007).

1. 2. 14C date

16Woven plant material was obtained from Huaca Tacaynamo for geochronology and a calibrated 14C date on this material gave a 2 sigma date of AD 1412-1614 (fig. 6). This date does not imply the age of the murals or initial occupation of the site.

Figura 6 – Radiocarbon determination on woven plant material from Huaca Tacaynamo

Figura 6 – Radiocarbon determination on woven plant material from Huaca Tacaynamo

17Archaeological evidence indicates initial occupation of the site may have been in the final stages of the Middle Horizon (AD 600-AD 1000) (Navarro, 1991: 52). Brick morphology indicates that construction of Tacaynamo may have been later, Early Chimu or roughly AD 1000-1100 (Jackson, 2004: 304). Therefore, the 14C date provides an upper limit that indicates that Tacaynamo was used and reused for approximately ~1000 years (when compared to data from Navarro, 1991) or 600 years (when compared to data from Jackson, 2004). Regardless of the initial occupation of the site, the 14C date indicates that Tacaynamo was apparently in use, at least until the arrival of the Europeans. Comparing inferred, non-isotopic dates from archaeological studies with 14C is inherently problematic; however, in this case, the 14C date is especially useful because it expands and anchors the upper limits of occupation of Tacaynamo.

1. 3. Pigments and society

18The use of mineral pigments has been well-documented in Europe and Asia. Cinnabar, Egyptian blue, and malachite were some of the pigments applied to a marble throne in the Tomb of Eurydice, Vergina, Greece, that dates to 340 BC (Kakoulli et al., 2001). Realgar, cinnabar, azurite, and lead from galena were processed and used as mineral pigments during the Roman era (Windhaven Guild, 2004) to decorate tiles in Roman villas in Morocco. In the 700s, azurite, cinnabar, goethite, and malachite were used to illuminate the Book of Kells in Ireland (Windhaven Guild, 2004) and in the 1600s, the Dutch painter, Vermeer, used cinnabar, yellow ochre, and lead oxide for flesh tones. Arsenic provided the green for Scheele’s green, a pigment used in wallpaper in the late 1700s (Jones & Lealingham, 1982: 626; Lewin et al., 1982: 627). Some of the same types of mineral pigments in use at Tacaynamo, in particular cinnabar, were also in use in Europe from the 1300s until the 1900s (Windhaven Guild, 2004).

19In some old Italian paintings, skies that were originally blue are now green due to the alteration of azurite, a blue mineral used for pigment. And, in Japan, lead oxide (PbO) obtained from galena was used to provide a striking white, but toxic, makeup for geishas.

20Cinnabar (HgS) has been widely used for rouge, tattoos, warpaint, and for the «bindi» forehead symbol used in Hindu society (Srinivasan & Ranganathan, 2004). Researchers found that cinnabar was one of the mineral pigments used on the frescoes that were later buried by ash from volcanic eruptions at Pompeii (Lorenzi, 2004).

21The white pigment used in modern makeup, paints, sunscreen, or on candies and other foods is titanium dioxide obtained from the mineral rutile (TiO2) or ilmenite (FeTiO3). In 2005, for example, United States’ production of TiO2 pigment was 1 300 000 metric tons (t) (Gambogi, 2005) and in 2004, U.S. production of iron oxide pigment was 85 000 t valued at $77 million (Potter, 2004). Therefore, whether for art applications or industrial use, consumption of mineral pigments is tied to the needs of a complex ancient or modern society.


22Mineral occurrences were exploited not only for their metals but also for pigments for artistic and industrial use. Sourcing the Tacaynamo pigments is inherently difficult due to the large number of mineral occurrences in the region, lack of a geochemical database for comparison, and destruction of the original outcrop from ancient, colonial, or modern mining. For example, Huancavelica is the most well known cinnabar occurrence in Peru and is but one of numerous occurrences listed by Petersen (1970: 18). There are probably many other cinnabar occurrences associated with hot springs or the abundant epithermal mineral deposits in the Andean cordillera that may have been exploited. Similarly, there are at least 20 atacamite localities and goethite is a ubiquitous alteration product associated with epithermal systems throughout the Andes.

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Índice de ilustraciones

Título Figure 1 – Atacamite x-ray diffraction pattern with quartz and feldspar
Ficheros image/jpeg, 124k
Título Figure 2 – Azurite x-ray diffraction pattern with quartz and minor atacamite
Ficheros image/jpeg, 116k
Título Figure 3 – Calcite x-ray diffraction pattern
Ficheros image/jpeg, 116k
Título Figure 4 – Cinnabar x-ray diffraction pattern with quartz
Ficheros image/jpeg, 108k
Título Figure 5 – Goethite x-ray diffraction pattern with quartz, feldspar, and illite
Ficheros image/jpeg, 108k
Título Figura 6 – Radiocarbon determination on woven plant material from Huaca Tacaynamo
Ficheros image/jpeg, 152k
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Para citar este artículo

Referencia en papel

William E. Brooks, Víctor Piminchumo, Héctor Suárez, John C. Jackson y John P. McGeehin, « Mineral pigments at Huaca Tacaynamo (Chan Chan, Peru) », Bulletin de l'Institut français d'études andines, 37 (3) | 2008, 441-450.

Referencia electrónica

William E. Brooks, Víctor Piminchumo, Héctor Suárez, John C. Jackson y John P. McGeehin, « Mineral pigments at Huaca Tacaynamo (Chan Chan, Peru) », Bulletin de l'Institut français d'études andines [En línea], 37 (3) | 2008, Publicado el 01 junio 2009, consultado el 26 marzo 2017. URL : ; DOI : 10.4000/bifea.2957

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William E. Brooks

Geology and Environmental Science-5F2, George Mason University, 4400 University Drive, Fairfax, VA 22030. E-mail:

Artículos del mismo autor

Víctor Piminchumo

Instituto Nacional de Cultura, sede Trujillo (Perú)

Héctor Suárez

Instituto Nacional de Cultura, sede Trujillo (Perú)

John C. Jackson

U.S. Geological Survey, 926A National Center, Reston, VA 20191

John P. McGeehin

U.S. Geological Survey, 926A National Center, Reston, VA 20191

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