单词 | pyrophanite |
释义 | pyrophaniten. Mineralogy. An oxide mineral containing manganese and titanium, typically occurring as small, deep red, black, or greenish-yellow crystals or grains, especially in association with manganese ores in metamorphic rocks.Pyrophanite is a manganese titanate, MnTiO3, usually also containing some iron and forming a series with ilmenite. Crystal system: trigonal. ΚΠ 1893 Amer. Naturalist 27 277 Pyrophanite..is a manganese titanium compound isomorphous with ilmenite. 1944 C. Palache et al. Dana's Syst. Mineral. (ed. 7) I. 536 Pyrophanite is MnTiO3 with Mn:Fe = 5:7 in some analyses. 1994 European Jrnl. Mineral. 6 145/2 Pyrophanite is occasionally present as an accessory phase in..serpentinized wehrlite, mainly consisting of subhedral magnetite, lizardite and antigorite. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1893 |
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