AND MUCH MORE<\/p>\n
CALL FOR PRICES<\/strong><\/p>\n 904-993-3433<\/strong><\/p>\n <\/strong><\/p>\n A3 SAND<\/strong><\/p>\n A THREE SAND<\/strong><\/p>\n SAND FOR DRAINFIELDS<\/strong><\/p>\n CLAY<\/strong><\/p>\n SAND FOR PLAYGROUNDS<\/strong><\/p>\n SAND FOR DRIVEWAYS<\/strong><\/p>\n BEACH SAND<\/strong><\/p>\n PINEBARK<\/strong><\/p>\n CYPRESS MULCH<\/strong><\/p>\n TOP SOIL<\/p>\n DUMP TRUCK RENTAL BY THE HOUR OR BY THE DAY<\/p>\n CALL FOR A FREE ESTIMATE<\/p>\n HAVE WHEELS WILL COME TO YOU<\/p>\n Sand<\/strong> is a naturally occurring granular material<\/a> composed of finely divided rock<\/a> and mineral<\/a> particles.<\/p>\n As the term is used by geologists, sand particles range in diameter<\/a> from 0.0625 (or 1<\/sup>\u2044<\/big>16<\/sub> mm, or 62.5 micrometers) to 2 millimeters. An individual particle in this range size is termed a sand grain<\/strong>. The next larger size class above sand is gravel<\/a>, with particles ranging from 2\u00a0mm up to 64\u00a0mm (see particle size<\/a> for standards in use). The next smaller size class in geology<\/a> is silt<\/a>: particles smaller than 0.0625\u00a0mm down to 0.004\u00a0mm in diameter. The size specification between sand and gravel has remained constant for more than a century, but particle diameters as small as 0.02 mm were considered sand under the Albert Atterberg<\/a> standard in use during the early 20th century. A 1953 engineering standard published by the American Association of State Highway and Transportation Officials<\/a> set the minimum sand size at 0.074 mm. A 1938 specification of the United States Department of Agriculture<\/a> was 0.05 mm.[<\/span>1]<\/span><\/a><\/sup> Sand feels gritty when rubbed between the fingers (silt, by comparison, feels like flour).<\/p>\n ISO 14688 grades sands as fine, medium and coarse with ranges 0.063\u00a0mm to 0.2\u00a0mm to 0.63\u00a0mm to 2.0\u00a0mm. In the United States, sand is commonly divided into five sub-categories based on size: very fine sand (1<\/sup>\u2044<\/big>16<\/sub> \u2013 1<\/sup>\u2044<\/big>8<\/sub> mm diameter), fine sand (1<\/sup>\u2044<\/big>8<\/sub> mm \u2013 1<\/sup>\u2044<\/big>4<\/sub> mm), medium sand (1<\/sup>\u2044<\/big>4<\/sub> mm \u2013 1<\/sup>\u2044<\/big>2<\/sub> mm), coarse sand (1<\/sup>\u2044<\/big>2<\/sub> mm \u2013 1\u00a0mm), and very coarse sand (1\u00a0mm \u2013 2\u00a0mm). These sizes are based on the Krumbein phi scale<\/a>, where size in \u03a6 = -log base 2 of size in mm. On this scale, for sand the value of \u03a6 varies from -1 to +4, with the divisions between sub-categories at whole numbers.<\/p>\n The most common constituent of sand, in inland continental settings and non-tropical coastal settings, is silica (silicon dioxide, or SiO2<\/sub>), usually in the form of quartz<\/a>, which, because of its chemical inertness and considerable hardness, is the most common mineral<\/a> resistant to weathering<\/a>.<\/p>\n The composition of sand is highly variable, depending on the local rock sources and conditions. The bright white sands<\/a> found in tropical and subtropical coastal settings are eroded limestone<\/a> and may contain coral<\/a> and shell<\/a> fragments in addition to other organic or organically derived fragmental material.[<\/span>2]<\/span><\/a><\/sup> The gypsum<\/a> sand dunes of the White Sands National Monument<\/a> in New Mexico<\/a> are famous for their bright, white color. Arkose<\/a> is a sand or sandstone<\/a> with considerable feldspar<\/a> content, derived from the weathering<\/a> and erosion<\/a> of a (usually nearby) granitic<\/a> rock outcrop. Some sands contain magnetite<\/a>, chlorite<\/a>, glauconite<\/a> or gypsum<\/a>. Sands rich in magnetite are dark to black in color, as are sands derived from volcanic basalts<\/a> and obsidian<\/a>. Chlorite-glauconite bearing sands are typically green in color, as are sands derived from basaltic (lava<\/a>) with a high olivine<\/a> content. Many sands, especially those found extensively in Southern Europe<\/a>, have iron<\/a> impurities within the quartz crystals of the sand, giving a deep yellow color. Sand deposits in some areas contain garnets<\/a> and other resistant minerals, including some small gemstones<\/a>.<\/p>\n Sand is transported by wind and water and deposited in the form of beaches<\/a>, dunes<\/a>, sand spits, sand bars and related features. In environments such as gravel<\/a>-bed rivers and glacial moraines it often occurs as one of the many grain sizes that are represented. Sand-bed rivers, such as the Platte River<\/a> in Nebraska<\/a>, USA, have sandy beds largely because there is no larger source material that they can transport<\/a>. Dunes, on the other hand, are sandy because larger material is generally immobile in wind, and are a distinctive geographical feature of desert<\/strong><\/p>\n <\/strong><\/p>\n