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stilpnosideriteSTILPNOSIDERITE, n. [Gr., shining, and siderite.] A mineral of a brownish black color, massive, in curving concretions, splendent and resinous. |
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stilpnosideriteSTILPNOSIDERITE, n. [Gr., shining, and siderite.] A mineral of a brownish black color, massive, in curving concretions, splendent and resinous. |