The most important of these was the Compa��a Espa�ola de Minas del Rif S . A ., working large superficial masses of specular hematite.
3.
Structure 6B contained a dedicatory cache with a large number of offerings, including 28 jade artifacts, a few ceramic vessels, spondylus shells, mirror fragments made from specular hematite and a variety of white shell disks.
4.
The term was originally applied in Itabirito ( Pico de Itabirito ), in the state of Minas Gerais and southern part of Belo Horizonte, Brazil, to a high-grade, massive specular hematite ore ( 66 % iron ) associated with a schistose rock composed of granular quartz and scaly hematite.
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