Specimen measuring 9.2 x 8.5 cm, with several Hydroxylapatite crystals on an Orthoclase matrix. The largest crystal measures ± 30 mm, bipyramidal, has a particularly intense green color and is much more uniform than usual in this type of specimen.
Mina Sapo, Ferruginha, Conselheiro Pena, Vale do Rio Doce, Minas Gerais, Brazil
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