Matches in DBpedia 2015-10 for { ?s ?p "Cryptomelane is a potassium manganese oxide mineral with formula K(Mn4+,Mn2+)8O16.In 1942 the name cryptomelane was proposed as part of an effort to sort out the manganese oxide minerals referred to as psilomelane. Cryptomelane was identified and defined based on X-ray diffraction studies of samples from Tombstone, Arizona; Deming, New Mexico; Mena, Arkansas; and Philipsburg, Montana.Cryptomelane was approved in 1982 by the International Mineralogical Association (IMA)."@en }
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- Cryptomelane comment "Cryptomelane is a potassium manganese oxide mineral with formula K(Mn4+,Mn2+)8O16.In 1942 the name cryptomelane was proposed as part of an effort to sort out the manganese oxide minerals referred to as psilomelane. Cryptomelane was identified and defined based on X-ray diffraction studies of samples from Tombstone, Arizona; Deming, New Mexico; Mena, Arkansas; and Philipsburg, Montana.Cryptomelane was approved in 1982 by the International Mineralogical Association (IMA).".