Laterite Stocks List
Symbol | Grade | Name | % Change | |
---|---|---|---|---|
S32 | B | South32 Ltd | -0.14 | |
ARN | B | Aldoro Resources Limited | -2.20 | |
CLA | F | Celsius Resources Ltd | 0.00 | |
VMS | F | Venture Minerals Limited | 0.00 | |
JRV | F | Jervois Mining Limited | 0.00 | |
RMI | F | Resource Mining Corporation Limited | 0.00 |
Related Industries: Copper Industrial Metals & Minerals Other Industrial Metals & Mining
Symbol | Grade | Name | Weight | |
---|---|---|---|---|
MVR | C | Market Vectors Australian Resources ETF | 4.93 | |
QRE | C | aShares Australian Resources Sector ETF | 3.16 | |
OZR | C | SPDR S&P/ASX 200 Resources Fund | 2.99 | |
MVW | B | Market Vectors Australian Equal Weight ETF | 1.66 |
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- Laterite
Laterite is a soil and rock type rich in iron and aluminium and is commonly considered to have formed in hot and wet tropical areas. Nearly all laterites are of rusty-red coloration, because of high iron oxide content. They develop by intensive and prolonged weathering of the underlying parent rock. Tropical weathering (laterization) is a prolonged process of chemical weathering which produces a wide variety in the thickness, grade, chemistry and ore mineralogy of the resulting soils. The majority of the land area containing laterites is between the tropics of Cancer and Capricorn.
Laterite has commonly been referred to as a soil type as well as being a rock type. This and further variation in the modes of conceptualizing about laterite (e.g. also as a complete weathering profile or theory about weathering) has led to calls for the term to be abandoned altogether. At least a few researchers specializing in regolith development have considered that hopeless confusion has evolved around the name. There is no likelihood, however, that the name will ever be abandoned; for material that looks highly similar to the Indian laterite occurs abundantly worldwide, and it is reasonable to call such material laterite.
Historically, laterite was cut into brick-like shapes and used in monument-building. After 1000 CE, construction at Angkor Wat and other southeast Asian sites changed to rectangular temple enclosures made of laterite, brick, and stone. Since the mid-1970s, some trial sections of bituminous-surfaced, low-volume roads have used laterite in place of stone as a base course. Thick laterite layers are porous and slightly permeable, so the layers can function as aquifers in rural areas. Locally available laterites have been used in an acid solution, followed by precipitation to remove phosphorus and heavy metals at sewage-treatment facilities.
Laterites are a source of aluminium ore; the ore exists largely in clay minerals and the hydroxides, gibbsite, boehmite, and diaspore, which resembles the composition of bauxite. In Northern Ireland they once provided a major source of iron and aluminium ores. Laterite ores also were the early major source of nickel.
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