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Excerpt from Anales de la Sociedad Científica Argentina, Vol. 7: Primer Semestre de 1897
No se conocen cristales provenientes de la República; solamente se hallan masas impuras, escamosas y en hojas pequeñas, disemina das Entre gneis ó caliza granudaf No se han encontrado hasta ahora las variedades puras que sirven para la fabricacion de lápices.
Localidades: Província de Córdoba. - En hojas pequenas entre la caliza granuda cerca del Ojo de Agua (dep. De Minas) con mica y serpentina.
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