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Detailed Mineral List:
|Opal var: Opal-CT|
|Formula:||SiO2 · nH2O|
|Reference:||Fritsch, E., Gaillou, E., Ostroumov, M., Rondeau, B., Devouard, B., Barreau, A. (2004) Relationship between nanostructure and optical absorption in fibrous pink opals from Mexico and Peru. European Journal of Mineralogy, 16, 743-752|
|Reference:||Transactions of the New York Academy of Sciences Volume 11, Issue 2 Series II, pages 28–33, December 1948|
|Photo: © 2007, JGW. Salammoniac from Paricutin volcano, Uruapan del Progreso, Michoacan, Mexico|
2 entries listed. 1 valid mineral.