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What pair of minerals most common in detrital sedimentary rocks?
Clay minerals and quartz are the chief constituents of most sedimentary rocks in this category. To answer why, clay minerals are the most abundant product of the chemical weathering of silicate minerals, especially the feldspars. Clays are fine-grained minerals with sheetlike crystalline structures similar to the micas. Quartz is abundant because it is extremely durable and very resistant to chemical weathering. Thus, when igneous rocks such as granite are attacked by weathering processes, individual quartz grains are freed.
How do the rocks in c horizon differ from those in the b horizon?
A horizon is often darker than B horizon or C horizon because it is the topsoil and the topsoil might be covered with litter. The litter decompose and as you know become soil and it will be fresh soil. So the fresh soil is darker than B and C horizon
A greenish blue iron rich variety of mineral clay found in marine and green sands?
This mineral is called glauconite, an iron potassium silicate with very low weathering resistance.
What is a fine-grained detrital rock that breaks into chunks or blocks?
Clay is a fine-grained detrital rock that breaks into chucks or blocks. It is the most abundant product of chemical weathering of silicate minerals.
What is the most common end product of chemical weathering of feldspar?
Feldspar breaks down giving us Al, Si and O in solution. You also get clay minerals left behind.
Which rock does China clay come from?
China clay is a type of clay that is rich in kaolinite, which is a layered silicate mineral. Silicate minerals are a type of rock-forming mineral.
What are the horizons of the soil?
O-horizon (surface litter)=mainly partially decaying organic matter A-horizon (Topsoil)= mainly contains organic matter, living organisms, inorganic minerals. E-horizon (Eluviated zone)= low quantities of minerals,clay and organic matter due to leeching. B-horizon (Subsoil)= accumulation of iron, aluminium and clay leached down from the A and E horizons. C-horizon (Regolith)= partially broken down inorganic minerals Bedrock
What is hydrous aluminum silicate?
it is the primary clay minerals
What is the silicate mineral that originates as a product of chemical weathering?
Clay minerals are the product of chemical weathering of silicate minerals, such as feldspars. Clays are silicate minerals.
What is an allophane?
An allophane is an amorphous hydrous aluminium silicate clay mineral.
What is an albeluvisol?
An albeluvisol is a form of soil with a thin, dark surface horizon on a bleached subsurface horizon which tongues into a clay illuviation horizon.
What brittle metalloid element occurs in sand quartz granite feldspar and clay?
The most common metalloid elements (those behaving between the metals and non-metals) are: B, Si, Ge, Te, As, & Sb. Of these common ones only Si (silicon) occurs in sand, quartz (Silicon dioxide), granite (feldspar + quartz + mica), feldspar (alumino silicate), and clay (oxidized alumino silicate.) So the answer is Silicon.
How does the b horizon differ from a horizon and the c horizon?
The C horizon contains mainly parent material, while the B horizon contains mainly clay particles and the A horizon; mainly silt sized particles and humus
What is pencil lead ingredients?
Graphite and clay binder - no actual 'lead'. Graphite is an allotrope of carbon C Clay is aluminum silicate Al2(SiO3)3
What is the A horizon need help?
The A horizon is the top layer and is made out of sand, clay silt, and humus. It is where most plants grow. =-) Hope that helped.
What is loess made mainly of?
It is a fine-grained unstratified accumulation of clay and silt deposited by the wind
What are two types of ceramics clay?
two types?I only know the 6 main types of clays used in ceramics which are: China clay (kaolin - silicate clay), Ball Clay,Fireclays, Earthenware clays, Stoneware clays,Porcelain clays..
