Matioliite, the Mg-analog of burangaite, from Gentil mine, Mendes Pimentel, Minas Gerais, Brazil, and other occurrences - Atencio, Daniel; Mascarenhas, Yvonne Primerano; Ellena, Javier; Coutinho, José Moacyr Vianna (American Mineralogist, 2006)