plagioclase
|pla-gi-o-clase|
C1
🇺🇸
/ˈpleɪdʒioʊˌkleɪs/
🇬🇧
/ˈpleɪdʒiəʊˌkleɪz/
oblique cleavage mineral
Etymology
Etymology Information
'plagioclase' originates from Greek, specifically the words 'plagios' meaning 'oblique' and 'klasis' meaning 'breaking'.
Historical Evolution
'plagioclase' was derived from the German word 'Plagioklas', which was used in the 19th century and eventually became the modern English word 'plagioclase'.
Meaning Changes
Initially, it referred to the oblique cleavage of the mineral, and this meaning has largely remained the same in modern usage.
Meanings by Part of Speech
Noun 1
a group of feldspar minerals that form a solid solution series ranging from albite to anorthite.
Plagioclase is a common mineral found in igneous rocks.
Synonyms
Last updated: 2025/06/29 18:02