bytownite

/bahy-tou-nahyt/US // baɪˈtaʊ naɪt //

乡下人,乡巴佬,乡镇人,乡镇居民

Definitions

n.名词 noun

1
- : a blue to dark-gray mineral near the anorthite end of the plagioclase feldspar group.

These intermediate members are the lime-soda felspars known as oligoclase, andesine, labradorite and bytownite.
These consist of hornblende (dark green) and basic plagioclase felspar, labradorite and bytownite (grey or nearly white).
The felspar ranges from bytownite to oligoclase, being usually a variety of labradorite; orthoclase is scarce.
Isolated crystals of bytownite bounded by well-defined faces are unknown.