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Why is coal classified as a sedimentary rock?

Of the three categories of rocks sedimentary igneous and metamorphic sedimentary is the closest type that coal could fit into Coal was not derived from molten material so is not igneous by definition It was not transformed under temperature Get price

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Mining

Mining is a skill that allows players to extract ores gems rune essence and other resources from rocks in mines throughout RuneScape To increase your Mining level you will need to mine ore from rocks All the different ores come from different colored rocks that are roughly based on the ore e g a Mithril rock would be blue in color Get price

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sedimentary rock formation flow chart

Sedimentary A A sedimentary rock is an accumulation of fragments of pre-existing rocks ( sediments) you have but also in what type of depositional environment the rock was formed Sedimentary Rock Flow Charts (requires at least Acrobat 4 to open) More detailedGet price

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Geology Mining SEDIMENTARY ROCK PART I

Sedimentary rocks exposed on land than most other rocks igneous and metamorphic rocks by 75 percent of land area although only an estimated 5 percent of the volume of the outer portion of the earth While it seems small but the sedimentary rocks is very important in geology because in it the history of recorded events geological past Get price

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Occurrence Mineralogy of Sedimentary Rocks

The Occurrence of Sedimentary Rocks Sedimentary rocks have an average thickness of about 1800 m on the continents This thickness is quite variable however with some areas like the Canadian Shield having no cover of sedimentary rocks and other areas like the Louisiana and Texas Gulf coasts having more than 20 000 m of sedimentary rock cover Get price

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Mining Part 2 Important Minerals Gems and Rocks

Fine-grained gray-to-dark colored sedimentary rock By the 1980s argillite (such as that quarried in Davidson County) was becoming widely used in the hearths of manufactured homes and in prefabricated fireplaces Asbestos Silky fibrous form of silicate minerals first discovered in 1871 Get price

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6 2 Chemical Sedimentary Rocks – Physical Geology

6 2 Chemical Sedimentary Rocks Whereas clastic sedimentary rocks are dominated by components that have been transported as solid clasts (clay silt sand etc ) chemical sedimentary rocks are dominated by components that have been transported as ions in solution (Na + Ca 2+ HCO 3 – etc ) Get price

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Method of underground mining buried under

(57) Abstract The invention relates to mining namely the underground ore-mining technologies Can be used in the development of kimberlite pipes located in the permafrost zone covered with sedimentary rocks with high ice content and swamped the surface Get price

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Gypsum

Massive gypsum rock forms within layers of sedimentary rock typically found in thick beds or layers It forms in lagoons where ocean waters high in calcium and sulfate content can slowly evaporate and be regularly replenished with new sources of water The result is the accumulation of large beds of sedimentary gypsum Get price

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What are the minerals and Gems that found in the

11-3-2019Sedimentary rocks are types of rock that are formed by the deposition and subsequent cementation of mineral or organic particles on the floor of oceans or other bodies of water at the Earth's surface Sedimentation is the collective name for processes that cause these particles to settle in placeGet price

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How are sedimentary rocks formed

Clastic sedimentary rocks are formed by the weathering erosion deposition compaction and cementation of other rocks Chemical sedimentary rocks however may be precipitated directly from saturated solutions (examples incldue the evaporitic rocks and Get price

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Unit 4 Reading Sedimentary Processes

Some sedimentary rocks are well cemented making them quite hard Some sedimentary rocks are poorly cemented and may crumble apart in your hand Quartz and calcite are the two minerals that most commonly form the cement in sedimentary rocks Return to textGet price

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The Rock

Some people consider coal to be a metamorphic rock the result of heat and pressure on organic sediments such as peat But most sedimentary rocks undergo some heat and pressure and coal's intimate association with normal sedimentary rocks and its mode of formation usually keep low grade coal in the sedimentary classification system Get price

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sedimentary rock

Sedimentary rock rock formed at or near the Earth's surface by the accumulation and lithification of sediment or by the precipitation from solution at normal surface temperatures Sedimentary rocks are the most common rocks exposed on the Earth's surface but are only a Get price

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Sedimentary Rocks Research Articles

Sedimentary rocks usually form from the deposition of material at the surface of the earth and under water Sedimentation is a process that causes the minerals to settle and accumulate from the solution Particles that forms sedimentary rock by accumulation is called sediment Get price

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14 Uses of Sedimentary Rocks in Civil Engineering

24-9-2018Uses of sedimentary rock can be found in almost all buildings and public structures This makes it substantially important construction material in civil engineering projects The sedimentary rock is formed by the settlement and subsequent cementation of mineral or organic particles on the floorGet price

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Sedimentary Rocks

30-4-2019Sedimentary rock along the White Rim Road at Canyonlands National Park Utah NPS photo Cementation The process by which clastic sediments become lithified or consolidated into hard compact rocks usually through deposition or precipitation of minerals in Get price

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Authigenic Minerals in Sedimentary Rocks

The book by no means pretends to be a determinative atlas of the authigenic minerals in sedimentary rocks its task is to draw the reader's attention to questions of origin and at the same time to equip him with systematic knowledge about the physical and especially the optical properties of these minerals Get price

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Rocks of ia

Very pure quartz sandstone called orthoquartzite has many of the same physical properties as metamorphic quartzite but is a sedimentary rock Orthoquartzite occurs in the Valley and Ridge province Sandstone Sandstone is a classic sedimentary rock that is composed of sand-sized particles of rocks and minerals Get price

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mining in sedimentary rocks

Sedimentary Rocks | Colorado Geological Survey Sedimentary Rocks Blown across the land by wind or carried along by water and ice as the land continued to remake itself loose sediments eventually compressed and cemented into rock and left messages in stone for us to decipher Get price

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Iron Ore Sedimentary Rock

A sedimentary geode is an openable item that can sometimes be obtained when mining copper tin iron coal mithril adamantite luminite or runite rocks Iron-rich sedimentary rocks are sedimentary rocks which contain 15% or more iron However most sedimentary rocks contain iron in varying degre Get price

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Underground mining (soft rock)

Underground soft rock mining is a group of underground mining techniques used to extract coal oil shale potash and other minerals or geological materials from sedimentary (soft) rocks Because deposits in sedimentary rocks are commonly layered and relatively less hard the mining methods used differ from those used to mine deposits in Get price

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Classroom Activities – Nevada Mining Association

Students will learn about textures in sedimentary rocks as an aid to recognizing clastic sedimentary rocks To observe deeply and intelligently and to be able to articulate their observations To measure something and record measurements To use their interest in fossils as Get price

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Rocks and Minerals

15-7-2019Rocks and minerals play a valuable role in natural systems such as providing habitat like the cliffs at Grand Canyon National Park where endangered condors nest or provide soil nutrients in Redwood where the tallest trees in the world grow Rocks and minerals are important for learning about earth materials structure and systems Get price

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Alluvial Mining

Alluvial mining considered as a special case of open cast mining and quarrying MISCONCEPTION!!! Alluvial Mining Placer Deposits Placer deposits are sedimentary ore deposits of heavy ore minerals formed by mechanical concentration of minerals in sediments deposited due earth surface processes Get price

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Sedimentary Rocks CRUSHED PULVERIZED AND

All rocks of all classifications will erode and form sediments at the earth's surface Since sedimentary rocks have for the most part only been physically broken they will usually retain some indication of the source rock – which as stated in the Igneous section – is important to mining exploration Get price

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Rare earth elements in sedimentary phosphate deposits

Rare earth elements in sedimentary phosphate deposits their profitable exploitation depends on overcoming the technical and environmental obstacles associated with seafloor mining 3–5 km below the similar REE contents despite being deposited across a wide range of sedimentary environments and in different sedimentary rock types Get price

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Sedimentary Rocks

These sedimentary rocks form part of a flysch sequence Siltstone A fine-grained sedimentary rock mostly composed of silt-size particles The photo from the Gander Lake area shows dark siltstone interbedded in a rhythmic fashion with white sandstone beds These sedimentary rocks form part of a flysch sequence Get price

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The lead and zinc deposits in the sedimentary rocks of

THE LEAD AND ZINC DEPOSITS IN THE SEDIMENTARY ROCKS OF EAST TEl 1NESSEE AND SOUTHWEST IA by Joseph H Reid A THESIS submitted to the faculty of the SCHOOL OF 1!INES AND METALLURGY OF THE UNIVERSITY OF MISSOURI in partial fUlfillment of the work required for the DEGREE OF E~UINEER OF MINES Rolla Mo 1930 Approved by t ~_ Professor Get price

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Sedimentary rock Mineral information data and localities

A rock resulting from the consolidation of loose sediment that has accumulated in layers e g a clastic rock (such as conglomerate or tillite) consisting of mechanically formed fragments of older rock transported from its source and deposited in water or from air or ice or a chemical rock (such as rock salt or gypsum) formed by precipitation Get price

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Geology Mining ClLASSIFICATION OF SEDIMENTARY

Clastic sedimentary rocks or sedimentary rocks also called detritus consists of fragments of various sizes Large granules called fragments and bound by the mass of the grains are more subtle which is called the matrix And grouped according to grain size material components becomes Get price

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