The dark minerals in this…, Feldspars and quartz show up in shades of grey. Granites are coarse-grained intrusive igneous rocks made of two different kinds of feldspar (potassium- and sodium-rich), together with quartz and a small…, Looking at granite between crossed polarisers makes it easier to distinguish the individual crystals. https://www.alamy.com/quiver-trees-aloidendron-dichotomum-growing-amongst-dolerite-rock-near-keetmanshoop-namibia-image215432325.html. Brown soils in dolerite: dry eucalypt forest at low altitude. ), Millstone, dolerite, 10,4 x 6,2 cm, Meroitische Period, 2nd-4th century, Egypt, https://www.alamy.com/millstone-oval-flat-flat-oval-millstone-of-dolerite-millstone-dolerite-104-x-62-cm-meroitische-period-2nd-4th-century-egypt-image344503516.html, Dolerite towers on Bishop and Clerk, Maria Island, https://www.alamy.com/dolerite-towers-on-bishop-and-clerk-maria-island-image352188177.html. ; Grant, J. Textures of Igneous Rocks: Texture of a rock is the appearance of the rock and how one feels touching it. Australia, Tasmania. https://www.alamy.com/spheroidal-weathering-of-dolerite-volcanic-rock-as-found-in-ardnamurchan-image67944485.html, Organ pipes formation dolerite columns Twyfelfontein Namibia Africa D C Poole, https://www.alamy.com/stock-photo-organ-pipes-formation-dolerite-columns-twyfelfontein-namibia-africa-20521139.html, Dolerite Outcrop covered in lichen Eden Valley Farm Narrogin Western Australia September, https://www.alamy.com/stock-photo-dolerite-outcrop-covered-in-lichen-eden-valley-farm-narrogin-western-16298919.html, the view of mt ossa rom the overland track with dolerite boulders in the foreground, https://www.alamy.com/the-view-of-mt-ossa-rom-the-overland-track-with-dolerite-boulders-in-the-foreground-image362564979.html, Remains of old dhustone (dolerite) quarry workings on Titterstone Clee Hill, Shropshire, UK, https://www.alamy.com/stock-photo-remains-of-old-dhustone-dolerite-quarry-workings-on-titterstone-clee-172068523.html. Soils Bulletin 2. Diabase, also called Dolerite, fine- to medium-grained, dark gray to black intrusive igneous rock.It is extremely hard and tough and is commonly quarried for crushed stone, under the name of trap. An example of a moderately altered dolerite with ophitic texture is shown in Figure F14. Dolerite, Igneous, Saco, Maine Dolerite is a dark, medium-grained igneous rock, typically with ophitic texture, containing plagioclase, pyroxene, and Dolerite columns on the sea cliffs of Eilean Garbh in the Shiant Isles, Outer Hebrides, Scotland, with nesting northern fulmars. Your Lightboxes will appear here when you have created some. Soils of Tasmanian State Forests 1. Dolerite columns entrance to Fortescue and Canoe Bays, https://www.alamy.com/australia-tasmania-tasman-national-park-dolerite-columns-entrance-to-fortescue-and-canoe-bays-image264705204.html, Farm Wüstenquell (Wuestenquell Guest Farm): Dolerite rocks in the Namib Desert, Distrikt Karibib, Namibia, https://www.alamy.com/farm-wstenquell-wuestenquell-guest-farm-dolerite-rocks-in-the-namib-image154466183.html, https://www.alamy.com/dolerite-dyke-igneous-rocks-welwitschia-drive-image227675258.html, Dolerite pillars and cockscomb ridges of Cape Rauol at the south west end of Tasman Peninsula, Tasmania, Australia, https://www.alamy.com/stock-photo-dolerite-pillars-and-cockscomb-ridges-of-cape-rauol-at-the-south-west-48707027.html, https://www.alamy.com/stock-photo-carn-menyn-carn-meini-rocky-dolerite-outcrop-pembrokeshire-south-west-20308763.html, Ruins in dolerite (dhustone) quarry workings on Abdon Burf, the summit of Brown Clee, Shropshire, https://www.alamy.com/stock-photo-ruins-in-dolerite-dhustone-quarry-workings-on-abdon-burf-the-summit-35421951.html, https://www.alamy.com/stock-photo-vent-dolerite-cross-polarised-microscope-image-33071251.html.