Mother lode of jade comes to light in Guatemala     

William J. Broad The New York Times     Thursday, May 23, 2002
    

For half a century, scholars have searched in vain for the source of the jade that the early civilizations of the  Americas prized above all else and fashioned into precious objects of worship, trade and adornment.  The searchers found some clues to the source of jadeite, as the precious rock is known, for the Olmecs and Mayas. But no lost mines came to light. Now, scientists exploring the wilds of Guatemala say they have found the mother lode - a mountainous region strewn with huge jade boulders, other rocky treasures and signs of ancient mining. It was discovered after a hurricane tore through the landscape and exposed the veins of jade, some of which turned up in stores, arousing  the curiosity of scientists. The find includes large outcroppings of blue jade, the gemstone of the Olmecs, the mysterious people who created the first complex culture in pre-Columbian Mesoamerica, the region that encompasses much of Mexico and Central America. It also includes an ancient road of stone, 1,600 meters (5,200 feet) above sea level, that runs for kilometers through the densely forested region. The deposits rival the world's leading source of mined jade today, in Burma, the experts say. The implications for history, archaeology and anthropology are just starting to emerge.

For one thing, the scientists say, the find suggests that the Olmecs, who flourished on the southern Gulf Coast of Mexico, exerted wide influence in the Guatemalan highlands as well. All told, they add, the Guatemalan lode was worked for millennia, compared with centuries for the Burmese one. "We were thunderstruck," George Harlow, a jade specialist at the American Museum of Natural History, said of the find. "This is the big one." In part, the discovery is a result of the devastating storm that hit Central America in 1998, killing thousands o people and touching off floods and landslides that exposed old veins and washed jade into river beds. Local prospectors picked up the precious scraps, which found their way into Guatemalan jewel shops and, eventually, the hands of astonished scientists. "'Lordy,' I said, 'this is Olmec type,'" recalled Russell Seitz, who decades earlier had directed a jade hunt in Guatemala for the Peabody Museum at Harvard. "Where did it come from?" Led by Seitz and local jade hunters, a team of scientists from the American Museum of Natural History, Rice University and the University of California scoured the forested ravines of the Guatemalan highlands for more than two years. In the end the scientists made a series of discoveries culminating in bus-size boulders of Olmec blue jade, some astride creeks. "It kept getting better and better," said Virginia Sisson, a geologist a Rice University, who has recently examined jades in Burma as well as Guatemala. The blue jade, she said, "is all over the hillsides." The exact locations of the outcroppings are not being given, to protect them. Leading archaeologists in Guatemala, though not directly involved, are applauding the finds. Hector Escobedo of the Universidad del Valle called the jade discovery "one of the most significant" in decades of probing the Mayan past and said the new deposits probably account for "all of the sources for Mesoamerican jades." He added that given Guatemala's lack of financial resources, "it is crucial to organize a cooperative effort with international scholars and institutions in order to protect and study the new jewel of our cultural heritage."

Scientists have long known that jadeites, like diamonds, arise deep inside the earth as rocks are cooked at pressures so great that their basic characteristics change. Geologic action over the eons then lifts them to the surface. The glassy, hard, often translucent rocks occur at only a few known sites around the world. But jade catches the eye because of its astonishing range of colors: white, red, blue, brown, blue-green, emerald green, dark green and blackish. The rocks are often mottled with colored specks and streaks. Early peoples of the Americas considered jade more valuable than gold and silver. The Olmecs, the great sculptors of the pre-Columbian era, carved jades into delicate human forms and scary masks. Maya kings and other royalty often went to their graves with jade suits, rings and necklaces. The living had their teeth inlaid with the colored gems. Jade was highly prized in Mesoamerica from at least 1400 B.C. until the Spanish conquest of 1519-21, experts say. But the Spanish were more interested in gold. Soon the skills and lore of jade mining and carving disappeared. The modern hunt began in the early 1950s. Scientists examining the Burmese deposits found that jade always occurred in association with serpentine, a mottled greenish rock. In seeking a Mesoamerican source, they focused on Guatemala because much serpentine rock occurred there in the Sierra de las Minas and the adjacent Motagua River valley. A few outcrops of low-quality jade were located near the river. By the mid-1970s scholarly interest was high enough to prompt organized Guatemalan hunts and meetings. The Peabody Museum and the Boston Museum of Fine Arts were among the sponsors, as was Landon Clay, a Boston investment banker who collected jade. But little turned up, and attention shifted to places like Mexico, Costa Rica and Honduras, where archaeologists had found thousands of jade artifacts. Back in Guatemala, a married couple with a commercial interest in jade kept finding more specimens near the Motagua River. The couple, Mary Lou and Jay Ridinger, discovered enough to set up a company, Jades S. A., in Antigua, a quaint tourist town. From a storefront workshop, they sold jade jewelry and Maya replicas and shared information about some of their finds with scientists.

The turning point came in 1999, shortly after the hurricane swept through. After a long absence from Guatemala, Seitz, who had led the Peabody hunt, was vacationing in Antigua and stopped in one of a half-dozen jade shops that had sprung up. Curious about what prospectors were finding, he was taken up to the shop's roof to inspect new specimens. His eye fell on a piece of bluish jade roughly the size of a hand. It was highly translucent and unlike anything he had ever seen before in Guatemala. But the shopkeepers could not  say where it came from. Starting in early 2000, Seitz traveled back repeatedly to Guatemala as local jade hunters led him higher and higher into the mountains. North of the Motagua, after days of hard climbing, he reached a grassy hillock where the local men had used pickaxes to hack open a huge jade vein." It was 2 yards wide and 50 long," or 1.8 meters by 45, Seitz recalled. "It was blue-green and translucent - not Grade A, but better than what you get in the valley and better than anything that we saw in the 1970s."Seitz returned to the United States with samples, and Harvard and the Museum of Natural History confirmed that they were high-quality jadeite. Other scholars joined the hunt. In 2001, Seitz returned to Guatemala with Sisson of Rice and Karl Taube, an anthropologist at the University of California at Riverside, who specializes in Olmec and Maya artifacts. Among other things, the team found an ancient drystone pathway that wound through the mountains from an old mining area to a habitation and tomb site littered with old clay shards. South of the Motagua, the team found even higher-quality jade - huge boulders of blue. The scientists say the most important implication of their find is that Olmecs exerted wide influence over the region. "It suggests that the trade routes were more extensive than we realized," Taube said. "Now the big question is, How did Costa Rica get so much of this jade?" In December 2001, the scientists quietly published a short article in the journal Antiquity on their discoveries, with Seitz the lead author. The new deposits, they wrote, are "excellent candidates for an 'Olmec blue' jade source." Harlow now estimates that the Guatemalan jade region, spread across public and private land, is roughly 10 times as great as experts estimated before the hurricane. His team is keeping maps of the outcroppings vague so as to discourage looters.


Copyright 2002 The International Herald Tribune