Datolite with Quartz

Bor Pit, Dalnegorsk B deposit, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai  Russia

Specimen size: 12.8 × 8.2 × 7.7 cm = 5.04” × 3.23” × 3.03”
Main crystal size: 7.5 × 7 cm = 2.95” × 2.76”