Hi-res online download not available. Delivery in 24 hours.
Title: diorite
Caption: Hand sample of Diorite, an intrusive igneous rock consisting of sodic plagioclase feldspar and hornblende, biotite or pyroxene. Small amounts of quartz may be present. Diorite has phaneritic texture; mineral grains are of nearly equal size and are visible to the naked eye.
Credit: Album / Science Source / MARK A. SCHNEIDER
Image size: 4256 × 2848 px | 34.7 MB
Print size: 36.0 × 24.1 cm | 1675.6 × 1121.3 in (300 dpi)