Hand Sample Missing
Thin Section Missing

Phonolitic Tephrite

IUGS Definition ( QAPF Chart )

Phonolitic Tephrite: “A collective term for alkaline volcanic rocks consisting of plagioclase, feldspathoid, augite and often minor olivine and sanidine. If the amount of olivine is greater than 10% it is a phonolitic basanite.”
Photos
Chemistry
Typical Minerals
  • MINERAL
  • MINERAL
  • MINERAL
  • MINERAL
  • ACCESSORY MINERALS