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Decomposed Granite
Decomposed granite is a kind of granite rock that is weathered to the point that the parent material readily fractures into smaller pieces of weaker rock. Further weathering yields material that easily crumbles into mixtures of gravel-sized particles known as grus that further may break down to produce a mixture of clay and silica sand or silt particles. Different specific granite types have differing propensities to weather, and so differing likelihoods of producing decomposed granite. It has practical uses that include its incorporation into roadway and driveway paving materials, residential gardening materials in arid environments, as well as various types of walkways and heavy-use paths in parks. Different colors of decomposed granite are available, deriving from the natural range of granite colors from different quarry sources, and admixture of other natural and synthetic materials can extend the range of decomposed granite properties. Definition and composition Decomposed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Targasonne Granite Pourri Et Arène
Targasonne (; ca, Targasona; before 2022: ''Targassonne'') is a commune of Cerdanya in the Pyrénées-Orientales department in south of France. Targasonne is the home of the THEMIS Solar Power R&D Center. Geography Targasonne is located in the canton of Les Pyrénées catalanes and in the arrondissement of Prades. It is located at 1,600 meters near the villages of Égat and Font-Romeu-Odeillo-Via. The closest cities are Foix in the North-West at 61 kilometres and Perpignan at 90 kilometres to the East. Population See also *Communes of the Pyrénées-Orientales department * THEMIS Solar Power R&D Center *Solar furnace in Odeillo *Cerdanya Cerdanya () or often La Cerdanya ( la, Ceretani or ''Ceritania''; french: Cerdagne; es, Cerdaña), is a natural comarca and historical region of the eastern Pyrenees divided between France and Spain. Historically it was one of the counties ... References Communes of Pyrénées-Orientales {{PyrénéesOrientales- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagioclase Feldspar
Plagioclase is a series of tectosilicate (framework silicate) minerals within the feldspar group. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a continuous solid solution series, more properly known as the plagioclase feldspar series. This was first shown by the German mineralogist Johann Friedrich Christian Hessel (1796–1872) in 1826. The series ranges from albite to anorthite endmembers (with respective compositions NaAlSi3O8 to CaAl2Si2O8), where sodium and calcium atoms can substitute for each other in the mineral's crystal lattice structure. Plagioclase in hand samples is often identified by its polysynthetic crystal twinning or 'record-groove' effect. Plagioclase is a major constituent mineral in the Earth's crust, and is consequently an important diagnostic tool in petrology for identifying the composition, origin and evolution of igneous rocks. Plagioclase is also a major constituent of rock in the highlands ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urban Park
An urban park or metropolitan park, also known as a municipal park (North America) or a public park, public open space, or municipal gardens ( UK), is a park in cities and other incorporated places that offer recreation and green space to residents of, and visitors to, the municipality. The design, operation, and maintenance is usually done by government agencies, typically on the local level, but may occasionally be contracted out to a park conservancy, "friends of" group, or private sector company. Common features of municipal parks include playgrounds, gardens, hiking, running and fitness trails or paths, bridle paths, sports fields and courts, public restrooms, boat ramps, and/or picnic facilities, depending on the budget and natural features available. Park advocates claim that having parks near urban residents, including within a 10-minute walk, provide multiple benefits. History A park is an area of open space provided for recreational use, usually owned and maintain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pétanque
Pétanque (, ; oc, petanca, , also or ) is a sport that falls into the category of boules sports, along with raffa, bocce, boule lyonnaise, lawn bowls, and crown green bowling. In all of these sports, players or teams play their boules/balls towards a target ball. In pétanque the objective is to score points by having boules closer to the target than the opponent after all boules have been thrown. This is achieved by throwing or rolling boules closer to the small target ball, officially called a ''jack'' ''(fr: cochonnet)'', or by hitting the opponents' boules away from the target, while standing inside a circle with both feet on the ground. The game is normally and best played on hard dirt or gravel. It can be played in public areas in parks or in dedicated facilities called ''boulodromes''. The current form of the game was codified in 1907 or 1910 in La Ciotat, in Provence, France. The French name ''pétanque'' (borrowed into English, with or without the acute accent) com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bocce
(, or , ), sometimes anglicized as bocce ball, bocci or boccie, is a ball sport belonging to the boules family. Developed into its present form in Italy, it is closely related to British bowls and French , with a common ancestry from ancient games played in the Roman Empire. Bocce is played around western, southern and southeastern Europe, as well as in overseas areas with historical Italian immigrant population, including Australia, North America, and South America, principally Argentina and the southern Brazilian state of Rio Grande do Sul. Initially played just by the Italian immigrants, the game has slowly become more popular with their descendants and more broadly. History Having developed from games played in the Roman Empire, Bocce developed into its present form in Italy (where it is called ', the plural of the Italian word ' which means 'bowl' in the general sporting sense), it spread around Europe and also in regions to which Italians have migrated. In South Amer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garden
A garden is a planned space, usually outdoors, set aside for the cultivation, display, and enjoyment of plants and other forms of nature. The single feature identifying even the wildest wild garden is ''control''. The garden can incorporate both natural and artificial materials. Gardens often have design features including statuary, follies, pergolas, trellises, stumperies, dry creek beds, and water features such as fountains, ponds (with or without fish), waterfalls or creeks. Some gardens are for ornamental purposes only, while others also produce food crops, sometimes in separate areas, or sometimes intermixed with the ornamental plants. Food-producing gardens are distinguished from farms by their smaller scale, more labor-intensive methods, and their purpose (enjoyment of a hobby or self-sustenance rather than producing for sale, as in a market garden). Flower gardens combine plants of different heights, colors, textures, and fragrances to create interest and delight the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Building Material
Building material is material used for construction. Many naturally occurring substances, such as clay, rock (geology), rocks, sand, wood, and even twigs and leaves, have been used to construct buildings. Apart from naturally occurring materials, many man-made products are in use, some more and some less synthetic. The manufacturing of building materials is an established industry in many countries and the use of these materials is typically segmented into specific specialty trades, such as carpentry, Building insulation, insulation, plumbing, and roofing material, roofing work. They provide the make-up of :Human habitats, habitats and architecture, structures including homes. The total cost of building materials In history, there are trends in building materials from being natural to becoming more man-made and Composite material, composite; biodegradable to imperishable; indigenous (local) to being transported globally; repairable to disposable; chosen for increased levels of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crushed Stone
Crushed stone or angular rock is a form of construction aggregate, typically produced by mining a suitable rock deposit and breaking the removed rock down to the desired size using crushers. It is distinct from naturally occurring gravel, which is produced by natural processes of weathering and erosion and typically has a more rounded shape. Use * Angular crushed stone is the key material for macadam road construction, which depends on the interlocking of the individual stones' angular faces for its strength. * As riprap * As railroad track ballast * As filter stone. * As composite material (with a binder) in concrete, tarmac, and asphalt concrete. * In landscaping as a groundcover, walkway and driveway pavement, and infill for permeable pavers. As a mineral groundcover its benefits include erosion control, water conservation, weed suppression, and aesthetics. It is often seen used in rock gardens and cactus gardens. Background Crushed stone is a major basic raw material ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decomposed Granite Path
Biology and ecology Decomposition is the process through which organic matter is broken down into simpler molecules. Decomposition, decompose may also refer to: Chemistry *Chemical decomposition or analysis, in chemistry, is the fragmentation of a chemical compound into elements or smaller compounds **Thermal decomposition, a chemical decomposition caused by heat Mathematics * Doob decomposition of an integrable, discrete-time stochastic process * Doob–Meyer decomposition of a continuous-time sub- or supermartingale * Hahn decomposition of a measure space * Hahn–Jordan decomposition of a signed measure *Helmholtz decomposition, decomposition of a vector field * Indecomposability (other) *Indecomposable continuum *Lebesgue's decomposition theorem, decomposition of a measure * Lie group decomposition, used to analyse the structure of Lie groups and associated objects *Manifold decomposition, decomposition of manifolds **JSJ decomposition, or toral decomposition, a dec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silica
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , most commonly found in nature as quartz and in various living organisms. In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and most abundant families of materials, existing as a compound of several minerals and as a synthetic product. Notable examples include fused quartz, fumed silica, silica gel, opal and aerogels. It is used in structural materials, microelectronics (as an Insulator (electricity), electrical insulator), and as components in the food and pharmaceutical industries. Structure In the majority of silicates, the silicon atom shows tetrahedral coordination geometry, tetrahedral coordination, with four oxygen atoms surrounding a central Si atomsee 3-D Unit Cell. Thus, SiO2 forms 3-dimensional network solids in which each silicon atom is covalently bonded in a tetrahedral manner to 4 oxygen atoms. In contrast, CO2 is a linear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaolin
Kaolinite ( ) is a clay mineral, with the chemical composition Al2 Si2 O5( OH)4. It is an important industrial mineral. It is a layered silicate mineral, with one tetrahedral sheet of silica () linked through oxygen atoms to one octahedral sheet of alumina () octahedra. Rocks that are rich in kaolinite are known as kaolin () or china clay. Kaolin is occasionally referred to by the antiquated term lithomarge, from the Ancient Greek ''litho-'' and Latin ''marga'', meaning 'stone of marl'. Presently the name lithomarge can refer to a compacted, massive form of kaolin. The name ''kaolin'' is derived from Gaoling (), a Chinese village near Jingdezhen in southeastern China's Jiangxi Province. The name entered English in 1727 from the French version of the word: , following François Xavier d'Entrecolles's reports on the making of Jingdezhen porcelain. Kaolinite has a low shrink–swell capacity and a low cation-exchange capacity (1–15 meq/100 g). It is a soft, earthy, usu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feldspar
Feldspars are a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. The most common members of the feldspar group are the ''plagioclase'' (sodium-calcium) feldspars and the ''alkali'' (potassium-sodium) feldspars. Feldspars make up about 60% of the Earth's crust, and 41% of the Earth's continental crust by weight. Feldspars crystalize from magma as both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock. Rock formed almost entirely of calcic plagioclase feldspar is known as anorthosite. Feldspars are also found in many types of sedimentary rocks. Compositions The feldspar group of minerals consists of tectosilicates, silicate minerals in which silicon ions are linked by shared oxygen ions to form a three-dimensional network. Compositions of major elements in common feldspars can be expressed in terms of three endmembers: * potassium feldspar (K-spar) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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