† microclasen.
Mineralogy. Obsolete. rare. Apparently only attested in dictionaries or glossaries.
= anorthoclase n.
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the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > others
sunstone1652
huronite1836
taenite1841
hyalophane1855
belonite1868
microclase1885
anorthoclase1888
barbierite1910
1885 Cassell's Encycl. Dict. V. i. 32/1 Microclase, a name given by Wiik to a potash-soda felspar, from the St Gotthard, Switzerland.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online June 2021).
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