manganomelanen.
/ˌmaŋɡəˈnɒməleɪn/, U.S. /ˌmæŋɡəˈnɑməleɪn/ Mineralogy.
Any of a group of manganese oxide minerals including psilomelane, esp. those with a hard texture.
ΘΚΠ
the world > the earth > minerals > ore > [noun]
oreOE
metala1387
minea1425
mineralc1500
vein1601
spelter1661
ram1683
virgin ore1758
rock1830
manganomelane1934
1934 T. Yoshimura in Jrnl. Faculty Sci. Hokkaidō Univ. 4th Ser. 2 297 The new mineral [sc. todorokite] belonged to the purest species of crystalline manganomelane.
1961 Amer. Mineralogist 46 362 Manganomelane is basically a useful term because it recognizes that all types of structural transitions exist between amorphous material (so-called ‘wad’) and well crystallized specimens called psilomelane, pyrolusite, etc... This writer [sc. A. A. Levinson] suggests that the definition of manganomelane be modified to be used as a general name for all hard manganese oxide minerals..not specifically identified.
1995 Mineralia Deposita 30 257/1 The main manganese minerals are braunite and bixbyite, apart from secondary alteration products of the psilomelane–melanomelane family.
This is a new entry (OED Third Edition, September 2000; most recently modified version published online March 2022).
<
n.1934