Datolite with Quartz

Bor Pit, Dalnegorsk B deposit, Dalnegorsk, Kavalerovo Mining District, Primorskiy Kray, Far-Eastern Region  Russia

Specimen size: 14.3 × 12.5 × 7.2 cm = 5.6” × 4.9” × 2.8”
Main crystal size: 6.5 × 4.5 cm = 2.6” × 1.8”