natural mineral material
61Bernardino Rivadavia Natural Sciences Museum — The Bernardino Rivadavia Natural Sciences Museum The Bernardino Rivadavia Natural Sciences Museum (Museo Argentino de Ciencias Naturales Bernardino Rivadavia) is a public museum located in the Caballito section of Buenos Aires, Argentina. History …
62Volvic (mineral water) — Infobox Bottled Water brand = Volvic country = France source = Auvergne National Park type = still ph = 7 ca = 10 cl = 8 c2 = 65 mg = 6 k = 6 ni = 1 si = 30 na = 9 s = 7 tds = 109 website = http://www.volvic na.com img |thumb|150pxVolvic is a… …
63Harewood (material) — Harewood is wood that has been treated with mineral substances to alter its color. Unlike dyeing processes, making harewood involves a chemical change, rather than simply superimposing color on the material.Harewood first began appearing on… …
64hatchettite — Mineral Min er*al, a. 1. Of or pertaining to minerals; consisting of a mineral or of minerals; as, a mineral substance. [1913 Webster] 2. Impregnated with minerals; as, mineral waters. [1913 Webster] {Mineral acids} (Chem.), inorganic acids, as… …
65rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …
66Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …
67Turquoise — For other uses, see Turquoise (disambiguation). Turquoise Turquoise (tumble finished) one inch (25 mm) long. This pebble is greenish and therefore low grade General …
68Abrasive — An abrasive is a material, often a mineral, that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, reflective surface …
69arctic — arctically, adv. /ahrk tik/ or, esp. for 7, /ahr tik/, adj. 1. (often cap.) of, pertaining to, or located at or near the North Pole: the arctic region. 2. coming from the North Pole or the arctic region: an arctic wind. 3. characteristic of the… …
70environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …
