玻は璃り長ちょう石せき

は

り

ちょ

う

せ

き

Meanings

1

noun

sanidine

A high-temperature potassium feldspar mineral; technical term used in geology and mineralogy.

glass

璃glassy, lapis lazuli

長long, leader, superior

石stone

正せい長ちょう石せき
Orthoclase, a related potassium feldspar that forms at lower temperatures; sanidine is the high-temperature polymorph.
微び斜しゃ長ちょう石せき
Microcline, another potassium feldspar with a different crystal structure, stable at even lower temperatures.

From 玻璃 (はり, 'glass') + 長石 (ちょうせき, 'feldspar'), referring to its glassy appearance. The exact historical derivation is uncertain.