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psilomelane
[ sahy-lom-uh-leyn ]
/ saɪˈlɒm əˌleɪn /
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noun
a common mineral consisting of a mixture of pyrolusite and other oxides of manganese, usually found in black, rounded masses: an ore of manganese.
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Origin of psilomelane
1825–35; <Greek psīló(s) bare, smooth + mélan, neuter of mélas black
Words nearby psilomelane
psid, psig, psilanthropism, psilocin, psilocybin, psilomelane, psilosis, psi particle, PSIS, psithurism, psittacine
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use psilomelane in a sentence
Manganese occurs mainly as black oxide (MnO2) in the mineral pyrolusite; and, in a less pure form, in psilomelane and wad.
A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob BeringerAs an ore of manganese it is much less abundant than pyrolusite or psilomelane.
British Dictionary definitions for psilomelane
psilomelane
/ (sɪˈlɒmɪˌleɪn) /
noun
a common black to grey secondary mineral consisting of hydrated basic oxide of manganese and barium: a source of manganese. Formula: BaMn 9 O 16 (OH) 4Also called: romanicite
Word Origin for psilomelane
C19: from Greek psilos bare + melas black
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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