In the Earth sciences, aggregate 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, 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 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 the construction industry, an aggregate (often referred to as a construction aggregate) is sand, gravel or crushed rock that has been mined or quarried for use as a building material.
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]
Aggregates are used extensively in the construction industry [9] [10] Often in making concrete, a construction aggregate is used, [4] with about 6 billion tons of concrete produced per year. [11]
In the Earth sciences, aggregate 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, 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 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 the construction industry, an aggregate (often referred to as a construction aggregate) is sand, gravel or crushed rock that has been mined or quarried for use as a building material.
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]
Aggregates are used extensively in the construction industry [9] [10] Often in making concrete, a construction aggregate is used, [4] with about 6 billion tons of concrete produced per year. [11]