stilpnosiderite

stilpnosiderite

(ˌstɪlpnəˈsɪdəˌraɪt)
n
a resinous variety of limonite with a black-brown colour
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
[Crystallized barite and stilpnosiderite from Rudabanya.] Foldtani Kozlony, 68, 68-71.