In the Earth sciences, aggregrate has three possible meanings. In mineralogy and petrology, an aggregate is a mass of mineral crystals, mineraloid particles or rock particles.[1][2] Examples are dolomite rock, which is an aggregate of crystals of the mineral dolomite,[3] and rock gypsum, an aggregate of crystals of the mineral gypsum.[4] Lapis lazuli
Lapis lazuli
is a type of rock composed of an aggregate of crystals of many minerals including lazurite, pyrite, phlogopite, calcite, potassium feldspar, wollastonite and some sodalite group minerals.[5] In mining geology, an aggregate (often referred to as a construction aggregate) is sand, gravel or crushed rock that has been mined for use as a building material in the construction industry. In pedology, an aggregate is a mass of soil particles. If the aggregate has formed naturally, it can be called a ped; if formed artificially, it can be called a clod.[6]


1 Construction aggregate
Construction aggregate
examples 2 Use in industry 3 See also 4 References 5 External links

Construction aggregate
Construction aggregate

granite sand gravel sandstone limestone[7][8]

Use in industry[edit] Aggregates are used extensively in the construction industry.[9][10] Often in making concrete, a construction aggregate is used.[4] See also[edit]

Soil structure


^ Neuendorf, K.K.E.; Mehl, Jr., J.P.; Jackson, J.A. (editors) (2005). Glossary of Geology
(5th edition). Alexandria, Virginia: American Geological Institute. p. 11. CS1 maint: Extra text: authors list (link) ^ Abel, Mara; Lorenzatti, Alexandre; Rama Fiorini, Sandro; Carbonera, Joel (2015). Ontological analysis of the lithology data in PPDM well core model (PDF). PNEC Conferences. Houston. p. 3. Retrieved 27 March 2017.  ^ Teichert, Curt (1965). Devonian Rocks and Paleogeography of Arizona (US Geological Survey Professional Paper 464) (PDF). Washington DC: USGS. p. 150.  ^ a b Jessica Elzea Kogel (2006). Industrial Minerals & Rocks: Commodities, Markets, and Uses (7th edition). SME. p. 522. ISBN 978-0-87335-233-8.  ^ T. Calligaro, Y. Coquinot, L. Pichon and B. Moignard (2011). "Advances in elemental imaging of rocks using the AGLAE external microbeam". Nuclear Instruments and Methods in Physics Research B. 269 (20): 2364–2372. doi:10.1016/j.nimb.2011.02.074. CS1 maint: Multiple names: authors list (link) ^ Allaby, Ailsa; Allaby, Michael (1999). A Dictionary of Earth Sciences (2nd edition). Oxford: Oxford University Press. ISBN 0-19-280079-5.  ^ Same Day Aggregates: Types of Aggregates - Same Day Aggregates, accessdate: March 25, 2017 ^ Indiana Mineral
Aggregates Association Carmel, IN: What are aggregates? - Indiana Mineral
Aggregates Association Carmel, IN, accessdate: March 25, 2017 ^ Introduction (1): What are Aggregates? « Herefordshire & Worcestershire Earth Heritage Trust: Introduction (1): What are Aggregates? « Herefordshire & Worcestershire Earth Heritage Trust, accessdate: March 23, 2017 ^ Define Aggregate at aggregate, accessdate: March 23, 2017

External links[edit]

What are aggregates? Concrete
Aggregates — Geological Considerations What is aggregate? — The Bare Essentials of Concrete
— Part 2 YouTube video (duration 4 minutes)

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