laterite


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laterite

a red soil found in the tropics, from which silica has been leached because of the hot, wet climatic conditions, but which retains the oxides of iron and aluminium.
References in periodicals archive ?
The types having commercial value include laterite, primary iron and iron sand.
The stratigraphic sequence of the area is as follows: Recent -- Red Lateritic soil and Black Clayey / Sandy soil Tertiary -- Laterites as caps Upper Cretaceous to Eocene -- Deccan traps with intertrappean beds UNCONFORMITY Archaean -- Granites and Gneisses
Correlation parameters laterite heavy metals Cr, Fe, Mn, Co and laterisasi closely related to ultramafic rocks, it is easy for the assay data processing and properties of an element geochemistry.
The Agbaja Formation and the iron mineralisation is laterally and aerially extensive across the Agbaja Plateau and consists of an upper unit comprising beds of ferruginous sandstone and reworked oolite/pisolite material (referred to as the Laterite unit) that overlies a sequence of massive ferruginous oolite and pisolite in a ferruginous matrix.
The UK firm operates as a nickel laterite development and production firm focused on the Philippines.
Examples of such locally available building materials that fit into these descriptions are cement replacement materials such as rice husk ash, corncob ash, sawdust ash, volcanic ash and conventional sand replacement materials such as erosion sand and laterite. This paper presents influence of curing age and mix proportion on the compressive strength of VA-blended cement laterized concrete, as part of an ongoing research on the use of volcanic ash as a pozzolana in laterized concrete with experimental design for up to 120days of hydration in consonance with previous works such as Matawal [7], Neville [8] and Neville & Brooks [9] respectively.
Based on the facies synthesis a depositional model is presented, which suggests nine repeated exposure cycles of platform (SB1-SB9 sequence boundaries), represented by the laterite facies (DLF4).
Laterite deposits, on the other hand, are relatively plentiful and generally massive--with some containing almost a billion tons of mineralized material--in addition to being located near the surface and mineable by economical open-pit techniques.
Cuban nickel is mined from so-called laterite deposits, which are close to the earth's surface and relatively inexpensive to mine.
The fine aggregate used were sand and laterite. The laterite was obtained from Julius Berger (Nigeria Public Limited Company) burrow pit at Maikunkele, Minna, Niger State, Nigeria.
2 said the results of 25 diamond drill holes at its Cumpie Hill nickel laterite concession showed promising results.
With his team of three graduate students, Alfantazi hopes to generate new knowledge to reduce costs and improve recovery in extraction techniques to develop laterite and sulfide ore bodies, the former being the most abundant sources of nickel deposits in the world.