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| | USGS Open File Report 2004-1024: Mineral, Energy, and Fertilizer Resources of the North Coast of Peru |
 | | Anthracite was used for mirrors by north coast cultures and is available near Rio Chicama, Rio Santa, and east of Santa Rita B. These outcrops are a part of the Alto Chicama, Perú's largest coalfield, which extends from Rio Chicama, in the north, for 200 km southward to Rio Santa. |
 | | Escudero (1979) outlined an extensive area in northern Perú, the Alto Chicama, that extends from Rio Chicama (translation, coal in Quechua) in the north to Rio Santa in the south (fig. |
 | | The Alto Chicama is considered to be the most significant coal resource area in Perú in terms of quality (7-23 percent ash, 7,000-13,000 Btu/lb, and less than 1 percent sulfur, as received) and quantity (223,710,000 metric tons) (Escudero, 1979; Carrascal and others, 2000). |
| pubs.usgs.gov /of/2004/1024/1024.html (4411 words) |
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